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Oracle12c版本中未归档隐藏参数

发布时间:2020-12-12 13:32:49 所属栏目:百科 来源:网络整理
导读:In this post,I will give a list of all undocumented parameters in Oracle 12.1.0.1c. Here is a query to see all the parameters (documented and undocumented) which contain the string you enter when prompted: – Enter name of the parameter wh

In this post,I will give a list of all undocumented parameters in Oracle 12.1.0.1c. Here is a query to see all the parameters (documented and undocumented) which contain the string you enter when prompted:

– Enter name of the parameter when prompted

SET linesize 235
col Parameter FOR a50
col SESSION FOR a28
col Instance FOR a55
col S FOR a1
col I FOR a1
col D FOR a1
col Description FOR a90

SELECT?
? a.ksppinm ?"Parameter",? decode(p.isses_modifiable,‘FALSE‘,NULL,b.ksppstvl) "Session",? c.ksppstvl "Instance",‘F‘,‘TRUE‘,‘T‘) "S",? decode(p.issys_modifiable,‘T‘,‘IMMEDIATE‘,‘I‘,‘DEFERRED‘,‘D‘) "I",? decode(p.isdefault,‘T‘) "D",? a.ksppdesc "Description"
FROM x$ksppi a,x$ksppcv b,x$ksppsv c,v$parameter p
WHERE a.indx = b.indx AND a.indx = c.indx
? AND p.name(+) = a.ksppinm
? AND UPPER(a.ksppinm) LIKE UPPER(‘%&1%‘)
ORDER BY a.ksppinm;

Enter value for 1:

Here is the list of all (2984) undocumented parameters in Oracle 12.1.0.1c ?:

SQL>???? col parameter for a15 word_wrapped
col Description for a55 word_wrapped
set pagesize 50000
set linesize 80
select upper(KSPPINM) parameter,?? ‘ : ‘,KSPPDESC Description from x$ksppi
where substr(ksppinm,1,1) = ‘_‘order by 1,3;

PARAMETER?? ? ? ? ? ? ? ? ? ? DESCRIPTION
—————??????????????????????? ——————————————————-
_4030_DUMP_BITV? :? bitvec to specify dumps prior to 4030 error
EC

_4031_DUMP_BITV? :? bitvec to specify dumps prior to 4031 error
EC

_4031_DUMP_INTE? :? Dump 4031 error once for each n-second interval
RVAL

_4031_MAX_DUMPS? :? Maximum number of 4031 dumps for this process
_4031_SGA_DUMP_? :? Dump 4031 SGA heapdump error once for each n-second
INTERVAL??????????? interval

_4031_SGA_MAX_D? :? Maximum number of SGA heapdumps
UMPS

_ABORT_ON_MRP_C? :? abort database instance when MRP crashes
RASH

_ABORT_RECOVERY? :? if TRUE,abort recovery on join reconfigurations
_ON_JOIN

_ACCEPT_VERSION? :? List of parameters for rolling operation
S

_ACTIVE_INSTANC? :? number of active instances in the cluster database
E_COUNT

_ACTIVE_SESSION? :? active session idle limit
_IDLE_LIMIT

_ACTIVE_SESSION? :? active session legacy behavior
_LEGACY_BEHAVIO
R

_ACTIVE_STANDBY? :? if TRUE optimize dlm reconfiguration for active/standby
_FAST_RECONFIGU???? OPS
RATION

_AC_ENABLE_DSCN? :? Enable Dependent Commit SCN tracking
_IN_RAC

_ADAPTIVE_DIREC? :? Adaptive Direct Read
T_READ

_ADAPTIVE_DIREC? :? Adaptive Direct Write
T_WRITE

_ADAPTIVE_FETCH? :? enable/disable adaptive fetch in parallel group by
_ENABLED

_ADAPTIVE_LOG_F? :? Threshold for frequent log file sync mode switches (per
ILE_SYNC_HIGH_S???? minute)
WITCH_FREQ_THRE
SHOLD

_ADAPTIVE_LOG_F? :? Polling interval selection bias (conservative=0,
ILE_SYNC_POLL_A???? aggressive=100)
GGRESSIVENESS

_ADAPTIVE_LOG_F? :? Window (in seconds) for measuring average scheduling
ILE_SYNC_SCHED_???? delay
DELAY_WINDOW

_ADAPTIVE_LOG_F? :? Ratio of redo synch time to expected poll time as a
ILE_SYNC_USE_PO???? percentage
LLING_THRESHOLD

_ADAPTIVE_LOG_F? :? Percentage of foreground load from when post/wait was
ILE_SYNC_USE_PO???? last used
STWAIT_THRESHOL
D

_ADAPTIVE_SCALA? :? Percentage of overlap across multiple outstanding
BLE_LOG_WRITER_???? writes
DISABLE_WORKER_
THRESHOLD

_ADAPTIVE_SCALA? :? Increase in redo generation rate as a percentage
BLE_LOG_WRITER_
ENABLE_WORKER_T
HRESHOLD

_ADAPTIVE_WINDO? :? enable/disable adaptive window consolidator PX plan
W_CONSOLIDATOR_
ENABLED

_ADDM_AUTO_ENAB? :? governs whether ADDM gets run automatically after every
LE????????????????? AWR snapshot

_ADDM_SKIPRULES? :? comma-separated list of ADDM nodes to skip
_ADDM_VERSION_C? :? governs whether ADDM checks the input AWR snapshot
HECK??????????????? version

_ADD_COL_OPTIM_? :? Allows new add column optimization
ENABLED

_ADD_NULLABLE_C? :? Allows add of a nullable column with default
OLUMN_WITH_DEFA???? optimization
ULT_OPTIM

_ADD_STALE_MV_T? :? add stale mv to dependency list
O_DEPENDENCY_LI
ST

_ADD_TRIM_FOR_N? :? add trimming for fixed char semantics
LSSORT

_ADG_BUFFER_WAI? :? Active Dataguard buffer wait time in cs
T_TIMEOUT

_ADG_INSTANCE_R? :? enable ADG instance recovery
ECOVERY

_ADJUST_LITERAL? :? If TRUE,we will adjust the SQL/PLUS output
_REPLACEMENT

_ADR_MIGRATE_RU? :? Enable/disable ADR Migrate Runonce action
NONCE

_ADVANCED_INDEX? :? advanced index compression options
_COMPRESSION_OP
TIONS

_ADVANCED_INDEX? :? advanced index compression options2
_COMPRESSION_OP
TIONS_VALUE

_ADVANCED_INDEX? :? advanced index compression trace
_COMPRESSION_TR
ACE

_AFFINITY_ON???? :? enable/disable affinity at run time
_AGED_OUT_CURSO? :? number of seconds an aged out session cached cursor
R_CACHE_TIME??????? stay in cache

_AGGREGATION_OP? :? settings for aggregation optimizations
TIMIZATION_SETT
INGS

_AIOWAIT_TIMEOU? :? Number of aiowait timeouts before error is reported
TS

_ALERT_EXPIRATI? :? seconds before an alert message is moved to exception
ON????????????????? queue

_ALERT_MESSAGE_? :? Enable Alert Message Cleanup
CLEANUP

_ALERT_MESSAGE_? :? Enable Alert Message Purge
PURGE

_ALERT_POST_BAC? :? Enable Background Alert Posting
KGROUND

_ALLOCATE_CREAT? :? should files be examined in creation order during
ION_ORDER?????????? allocation

_ALLOCATION_UPD? :? interval at which successful search in L1 should be
ATE_INTERVAL??????? updated

_ALLOW_CELL_SMA? :? Allow checking smart_scan_capable Attr
RT_SCAN_ATTR

_ALLOW_COMMUTAT? :? allow for commutativity of +,* when comparing
IVITY?????????????? expressions

_ALLOW_COMPATIB? :? allow advancing DB compatibility with guaranteed
ILITY_ADV_W_GRP???? restore points

_ALLOW_DROP_SNA? :? Allow dropping snapshot standby guaranteed restore
PSHOT_STANDBY_G???? point
RSP

_ALLOW_DROP_TS_? :? Allow drop Tablespace with guaranteed restore points
WITH_GRP

_ALLOW_ERROR_SI? :? Allow error simulation for testing
MULATION

_ALLOW_FILE_1_O? :? don’t signal ORA-1245 due to file 1 being offline
FFLINE_ERROR_12
45

_ALLOW_LEVEL_WI? :? allow level without connect by
THOUT_CONNECT_B
Y

_ALLOW_READ_ONL? :? allow read-only open even if database is corrupt
Y_CORRUPTION

_ALLOW_RESETLOG? :? allow resetlogs even if it will cause corruption
S_CORRUPTION

_ALLOW_TERMINAL? :? Finish terminal recovery even if it may cause
_RECOVERY_CORRU???? corruption
PTION

_ALL_SHARED_DBL? :? treat all dblinks as shared
INKS

_ALTERNATE_IOT_? :? enable alternate index-organized table leaf-block
LEAF_BLOCK_SPLI???? split-points
T_POINTS

_ALTER_COMMON_U? :? allow local user to create objects in common schema
SER_SCHEMA

_ALWAYS_ANTI_JO? :? always use this method for anti-join when possible
IN

_ALWAYS_SEMI_JO? :? always use this method for semi-join when possible
IN

_ALWAYS_STAR_TR? :? always favor use of star transformation
ANSFORMATION

_AM_CONTAINER_F? :? allocation unit size for non-ASM containers
ILESYSTEM_AUSIZ
E

_AM_MAX_CONTAIN? :? maximum number of containers
ERS

_AM_MAX_GROUPS?? :? maximum number of containers
_AM_MAX_SEG_BYT? :? maximum number of bytes per array segment
ES

_AM_TIMEOUTS_EN? :? enable timeouts
ABLED

_AM_TRACE_BUFFE? :? size of per-process I/O trace buffer
R_SIZE

_AND_PRUNING_EN? :? allow partition pruning based on multiple mechanisms
ABLED

_APPQOS_CDB_SET? :? QoSM CDB Performance Class Setting
TING

_APPQOS_PO_MULT? :? Multiplier for PC performance objective value
IPLIER

_APPQOS_QT?????? :? System Queue time retrieval interval
_AQSHARDED_CACH? :? Limit for cached enqueue/dequeue operations
E_LIMIT

_AQ_DISABLE_X??? :? AQ – Disable new cross processes at an instance
_AQ_DQ_SESSIONS? :? Deq session count
_AQ_EQ_SESSIONS? :? Enq session count
_AQ_INIT_SHARDS? :? Minimum enqueue shards per queue at an instance
_AQ_MAX_SCAN_DE? :? Maximum allowable scan delay for AQ indexes and IOTs
LAY

_AQ_PRECRT_PART? :? Precreate Partitions
ITIONS

_AQ_PT_PROCESSE? :? Partition background processes
S

_AQ_STOP_BACKGR? :? Stop all AQ background processes
OUNDS

_AQ_SUBSHARD_SI? :? Sub Shard Size
ZE

_AQ_TM_DEQCOUNT? :? dequeue count interval for Time Managers to cleanup DEQ
INTERVAL??????????? IOT BLOCKS

_AQ_TM_SCANLIMI? :? scan limit for Time Managers to clean up IOT
T

_AQ_TM_STATISTI? :? statistics collection window duration
CS_DURATION

_ARCH_COMPRESSI? :? archive compression enabled
ON

_ARCH_COMPRESS_? :? enable/disable row checksums for archive compressed
CHECKSUMS?????????? blocks

_ARCH_COMP_DBG_? :? archive compression scan debug
SCAN

_ARCH_COMP_DEC_? :? decompress archive compression blocks for checking and
BLOCK_CHECK_DUM???? dumping
P

_ARCH_IO_SLAVES? :? ARCH I/O slaves
_ARCH_SIM_MODE?? :? Change behavior of local archiving
_ARRAY_CDB_VIEW? :? array mode enabled for CDB views
_ENABLED

_ARRAY_UPDATE_V? :? Enable array update vector read
ECTOR_READ_ENAB
LED

_ASH_COMPRESSIO? :? To enable or disable string compression in ASH
N_ENABLE

_ASH_DISK_FILTE? :? Ratio of the number of in-memory samples to the number
R_RATIO???????????? of samples actually written to disk

_ASH_DISK_WRITE? :? To enable or disable Active Session History flushing
_ENABLE

_ASH_DUMMY_TEST? :? Oracle internal dummy ASH parameter used ONLY for
_PARAM????????????? testing!

_ASH_EFLUSH_TRI? :? The percentage above which if the in-memory ASH is full
GGER??????????????? the emergency flusher will be triggered

_ASH_ENABLE????? :? To enable or disable Active Session sampling and
flushing

_ASH_MIN_MMNL_D? :? Minimum Time interval passed to consider MMNL Dump
UMP

_ASH_SAMPLE_ALL? :? To enable or disable sampling every connected session
including ones waiting for idle waits

_ASH_SAMPLING_I? :? Time interval between two successive Active Session
NTERVAL???????????? samples in millisecs

_ASH_SIZE??????? :? To set the size of the in-memory Active Session History
buffers

_ASMSID????????? :? ASM instance id
_ASM_ACCESS????? :? ASM File access mechanism
_ASM_ACD_CHUNKS? :? initial ACD chunks created
_ASM_ADMIN_WITH? :? Does the sysdba role have administrative privileges on
_SYSDBA???????????? ASM?

_ASM_ALLOWDEGEN? :? Allow force-mounts of DGs w/o proper quorum
ERATEMOUNTS

_ASM_ALLOW_APPL? :? Allow DROP DISK/FAILUREGROUP NOFORCE on ASM Appliances
IANCE_DROPDISK_
NOFORCE

_ASM_ALLOW_LVM_? :? Enable disk resilvering for external redundancy
RESILVERING

_ASM_ALLOW_ONLY? :? Discovery only raw devices
_RAW_DISKS

_ASM_ALLOW_SYST? :? if system alias renaming is allowed
EM_ALIAS_RENAME

_ASM_ALLOW_UNSA? :? attempt unsafe reconnect to ASM
FE_RECONNECT

_ASM_APPLIANCE_? :? Appliance configuration file name
CONFIG_FILE

_ASM_AUSIZE????? :? allocation unit size
_ASM_AUTOMATIC_? :? automatically rebalance free space across zones
REZONE

_ASM_AVOID_PST_? :? Avoid PST Scans
SCANS

_ASM_BLKSIZE???? :? metadata block size
_ASM_CHECK_FOR_? :? check for misbehaving CF-holding clients
MISBEHAVING_CF_
CLIENTS

_ASM_COMPATIBIL? :? default ASM compatibility level
ITY

_ASM_DBA_BATCH?? :? ASM Disk Based Allocation Max Batch Size
_ASM_DBA_SPCCHK? :? ASM Disk Based Allocation Space Check Threshold
_THLD

_ASM_DBA_THRESH? :? ASM Disk Based Allocation Threshold
OLD

_ASM_DBMSDG_NOH? :? dbms_diskgroup.checkfile does not check block headers
DRCHK

_ASM_DIAG_DEAD_? :? diagnostics for dead clients
CLIENTS

_ASM_DIRECT_CON? :? Expire time for idle direct connection to ASM instance
_EXPIRE_TIME

_ASM_DISABLE_AM? :? Disable AMDU dump
DU_DUMP

_ASM_DISABLE_AS? :? disable async intra-instance messaging
YNC_MSGS

_ASM_DISABLE_MU? :? Disable checking for multiple ASM instances on a given
LTIPLE_INSTANCE???? node
_CHECK

_ASM_DISABLE_PR? :? disable profile query for discovery
OFILEDISCOVERY

_ASM_DISABLE_SM? :? Do Not create smr
R_CREATION

_ASM_DISABLE_UF? :? disable ufg member kill
GMEMBERKILL

_ASM_DISABLE_UF? :? disable terminated umbilicus diagnostic
G_DUMP

_ASM_DISKERR_TR? :? Number of read/write errors per disk a process can
ACES??????????????? trace

_ASM_DISKGROUPS? :? disk groups to mount automatically set 2
2

_ASM_DISKGROUPS? :? disk groups to mount automatically set 3
3

_ASM_DISKGROUPS? :? disk groups to mount automatically set 4
4

_ASM_DISK_REPAI? :? seconds to wait before dropping a failing disk
R_TIME

_ASM_EMULATE_NF? :? Emulate NFS disk test event
S_DISK

_ASM_EMULMAX???? :? max number of concurrent disks to emulate I? /O errors
_ASM_EMULTIMEOU? :? timeout before emulation begins (in 3s ticks)
T

_ASM_ENABLE_XRO? :? Enable XROV capability
V

_ASM_EVENREAD??? :? ASM Even Read level
_ASM_EVENREAD_A? :? ASM Even Read Alpha
LPHA

_ASM_EVENREAD_A? :? ASM Even Read Second Alpha
LPHA2

_ASM_EVENREAD_F? :? ASM Even Read Fast Start Threshold
ASTSTART

_ASM_FAIL_RANDO? :? Randomly fail some RX enqueue gets
M_RX

_ASM_FOB_TAC_FR? :? Timeout frequency for FOB cleanup
EQUENCY

_ASM_FORCE_QUIE? :? Force diskgroup quiescing
SCE

_ASM_GLOBAL_DUM? :? System state dump level for ASM asserts
P_LEVEL

_ASM_HBEATIOWAI? :? number of secs to wait for PST Async Hbeat IO return
T

_ASM_HBEATWAITQ? :? quantum used to compute time-to-wait for a PST Hbeat
UANTUM????????????? check

_ASM_HEALTHCHEC? :? seconds until health check takes action
K_TIMEOUT

_ASM_IMBALANCE_? :? hundredths of a percentage of inter-disk imbalance to
TOLERANCE?????????? tolerate

_ASM_INSTLOCK_Q? :? ASM Instance Lock Quota
UOTA

_ASM_IOSTAT_LAT? :? ASM I/O statistics latch count
CH_COUNT

_ASM_KFDPEVENT?? :? KFDP event
_ASM_KILL_UNRES? :? kill unresponsive ASM clients
PONSIVE_CLIENTS

_ASM_LIBRARIES?? :? library search order for discovery
_ASM_LOG_SCALE_? :? Rebalance power uses logarithmic scale
REBALANCE

_ASM_LSOD_BUCKE? :? ASM lsod bucket size
T_SIZE

_ASM_MAXIO?????? :? Maximum size of individual I/O request
_ASM_MAX_COD_ST? :? maximum number of COD strides
RIDES

_ASM_MAX_REDO_B? :? asm maximum redo buffer size
UFFER_SIZE

_ASM_NETWORKS??? :? ASM network subnet addresses
_ASM_NETWORK_TI? :? Keepalive timeout for ASM network connections
MEOUT

_ASM_NODEKILL_E? :? secs until escalating to nodekill if fence incomplete
SCALATE_TIME

_ASM_NOEVENREAD? :? List of disk groups having even read disabled
_DISKGROUPS

_ASM_PARTNER_TA? :? target maximum number of disk partners for repartnering
RGET_DISK_PART

_ASM_PARTNER_TA? :? target maximum number of failure group relationships
RGET_FG_REL???????? for repartnering

_ASM_PRIMARY_LO? :? Number of cycles/extents to load for non-mirrored files
AD

_ASM_PRIMARY_LO? :? True if primary load is in cycles,false if extent
AD_CYCLES?????????? counts

_ASM_PROCS_TRAC? :? Number of processes allowed to trace a disk failure
E_DISKERR

_ASM_PROXY_STAR? :? Maximum time to wait for ASM proxy connection
TWAIT

_ASM_RANDOM_ZON? :? Random zones for new files
E

_ASM_REBALANCE_? :? maximum rebalance work unit
PLAN_SIZE

_ASM_REBALANCE_? :? number of out of space errors allowed before aborting
SPACE_ERRORS??????? rebalance

_ASM_REMOTE_CLI? :? timeout before killing disconnected remote clients
ENT_TIMEOUT

_ASM_REPAIRQUAN? :? quantum (in 3s) used to compute elapsed time for disk
TUM???????????????? drop

_ASM_RESERVE_SL? :? reserve ASM slaves for CF txns
AVES

_ASM_RESYNCCKPT? :? number of extents to resync before flushing checkpoint
_ASM_ROOT_DIREC? :? ASM default root directory
TORY

_ASM_RUNTIME_CA? :? runtime capability for volume support returns supported
PABILITY_VOLUME
_SUPPORT

_ASM_SCRUB_LIMI? :? ASM disk scrubbing power
T

_ASM_SECONDARY_? :? Number of cycles/extents to load for mirrored files
LOAD

_ASM_SECONDARY_? :? True if secondary load is in cycles,false if extent
LOAD_CYCLES???????? counts

_ASM_SERIALIZE_? :? Serialize volume rebalance
VOLUME_REBALANC
E

_ASM_SHADOW_CYC? :? Inverse shadow cycle requirement
LE

_ASM_SKIP_DISKV? :? skip client side discovery for disk revalidate
AL_CHECK

_ASM_SKIP_RENAM? :? skip the checking of the clients for s/w compatibility
E_CHECK???????????? for rename

_ASM_SKIP_RESIZ? :? skip the checking of the clients for s/w compatibility
E_CHECK???????????? for resize

_ASM_STORAGEMAY? :? PST Split Possible
SPLIT

_ASM_STRIPESIZE? :? ASM file stripe size
_ASM_STRIPEWIDT? :? ASM file stripe width
H

_ASM_SYNC_REBAL? :? Rebalance uses sync I/O
ANCE

_ASM_TRACE_LIMI? :? Time-out in milliseconds to reset the number of traces
T_TIMEOUT?????????? per disk and the number of processes allowed to trace

_ASM_USD_BATCH?? :? ASM USD Update Max Batch Size
_ASM_WAIT_TIME?? :? Max/imum time to wait before asmb exits
_ASSM_DEFAULT??? :? ASSM default
_ASSM_FORCE_FET? :? enable metadata block fetching in ASSM segment scan
CHMETA

_ASSM_HIGH_GSP_? :? Number of blocks rejected before growing segment
THRESHOLD

_ASSM_LOW_GSP_T? :? Number of blocks rejected before collecting stats
HRESHOLD

_ASYNC_RECOVERY? :? if TRUE,issue recovery claims asynchronously
_CLAIMS

_ASYNC_RECOVERY? :? if TRUE,issue recovery reads asynchronously
_READS

_ASYNC_TS_THRES? :? check tablespace thresholds asynchronously
HOLD

_AUTOMATIC_MAIN? :? Enable AUTOTASK Test Mode
TENANCE_TEST

_AUTOMEMORY_BRO? :? memory broker statistics gathering interval for auto
KER_INTERVAL??????? memory

_AUTOTASK_MAX_W? :? Maximum Logical Maintenance Window Length in minutes
INDOW

_AUTOTASK_MIN_W? :? Minimum Maintenance Window Length in minutes
INDOW

_AUTOTASK_TEST_? :? Name of current Autotask Test (or test step)
NAME

_AUTOTUNE_GTX_I? :? idle time to trigger auto-shutdown a gtx background
DLE_TIME??????????? process

_AUTOTUNE_GTX_I? :? interval to autotune global transaction background
NTERVAL???????????? processes

_AUTOTUNE_GTX_T? :? auto-tune threshold for degree of global transaction
HRESHOLD??????????? concurrency

_AUTO_ASSIGN_CG? :? auto assign CGs for sessions
_FOR_SESSIONS

_AUTO_BMR??????? :? enable/disable Auto BMR
_AUTO_BMR_BG_TI? :? Auto BMR Process Run Time
ME

_AUTO_BMR_FC_TI? :? Auto BMR Flood Control Time
ME

_AUTO_BMR_PUB_T? :? Auto BMR Publish Timeout
IMEOUT

_AUTO_BMR_REQ_T? :? Auto BMR Requester Timeout
IMEOUT

_AUTO_BMR_SESS_? :? Auto BMR Request Session Threshold
THRESHOLD

_AUTO_BMR_SYS_T? :? Auto BMR Request System Threshold
HRESHOLD

_AUTO_MANAGE_EN? :? perodically check for OFFLINE disks and attempt to
ABLE_OFFLINE_CH???? ONLINE
ECK

_AUTO_MANAGE_EX? :? Automate Exadata disk management
ADATA_DISKS

_AUTO_MANAGE_IN? :? TEST: Set infrequent timeout action to run at this
FREQ_TOUT?????????? interval,unit is seconds

_AUTO_MANAGE_IO? :? oss_ioctl buffer size,to read and respond to cell
CTL_BUFSZ?????????? notifications

_AUTO_MANAGE_MA? :? Max. attempts to auto ONLINE an ASM disk
X_ONLINE_TRIES

_AUTO_MANAGE_NU? :? Max. number of out-standing msgs in the KXDAM pipe
M_PIPE_MSGS

_AUTO_MANAGE_NU? :? Num. tries before giving up on a automation operation
M_TRIES

_AUTO_MANAGE_ON? :? Allow Max. attempts to auto ONLINE an ASM disk after
LINE_TRIES_EXPI???? lapsing this time (unit in seconds)
RE_TIME

_AUX_DFC_KEEP_T? :? auxiliary datafile copy keep time in minutes
IME

_AVAILABLE_CORE? :? number of cores for this instance
_COUNT

_AVOID_PREPARE?? :? if TRUE,do not prepare a buffer when the master is
local

_AWR_CDBPERF_TH? :? Setting for AWR CDBPERF Threshold
RESHOLD

_AWR_CORRUPT_MO? :? AWR Corrupt Mode
DE

_AWR_DISABLED_F? :? Disable flushing of specified AWR tables
LUSH_TABLES

_AWR_FLUSH_THRE? :? Enable/Disable Flushing AWR Threshold Metrics
SHOLD_METRICS

_AWR_FLUSH_WORK? :? Enable/Disable Flushing AWR Workload Metrics
LOAD_METRICS

_AWR_MMON_CPUUS? :? Enable/disable AWR MMON CPU Usage Tracking
AGE

_AWR_MMON_DEEP_? :? Allows deep purge to purge AWR data for all expired
PURGE_ALL_EXPIR???? snapshots
ED

_AWR_MMON_DEEP_? :? Set extent of rows to check each deep purge run
PURGE_EXTENT

_AWR_MMON_DEEP_? :? Set interval for deep purge of AWR contents
PURGE_INTERVAL

_AWR_MMON_DEEP_? :? Set max number of rows per table to delete each deep
PURGE_NUMROWS?????? purge run

_AWR_PDB_REGIST? :? Parameter to enable/disable AWR PDB Registration
RATION_ENABLED

_AWR_REMOTE_TAR? :? AWR Remote Target DBLink for Flushing
GET_DBLINK

_AWR_RESTRICT_M? :? AWR Restrict Mode
ODE

_AWR_SQL_CHILD_? :? Setting for AWR SQL Child Limit
LIMIT

_BACKUP_ALIGN_W? :? align backup write I/Os
RITE_IO

_BACKUP_AUTOMAT? :? automatic retry on backup write errors
IC_RETRY

_BACKUP_DISK_BU? :? number of buffers used for DISK channels
FCNT

_BACKUP_DISK_BU? :? size of buffers used for DISK channels
FSZ

_BACKUP_DISK_IO? :? BACKUP Disk I/O slaves
_SLAVES

_BACKUP_DYNAMIC? :? dynamically compute backup/restore buffer sizes
_BUFFERS

_BACKUP_ENCRYPT? :? specifies encryption block optimization mode
_OPT_MODE

_BACKUP_FILE_BU? :? number of buffers used for file access
FCNT

_BACKUP_FILE_BU? :? size of buffers used for file access
FSZ

_BACKUP_IO_POOL? :? memory to reserve from the large pool
_SIZE

_BACKUP_KGC_BLK? :? specifies buffer size to be used by HIGH compression
SIZ

_BACKUP_KGC_BUF? :? specifies buffer size to be used by BASIC compression
SZ

_BACKUP_KGC_MEM? :? specifies memory level for MEDIUM compression
LEVEL

_BACKUP_KGC_NIT? :? specifies number of iterations done by BASIC
ERS???????????????? compression

_BACKUP_KGC_PER? :? specifies compression (performance) level for MEDIUM
FLEVEL????????????? compression

_BACKUP_KGC_SCH? :? specifies compression scheme
EME

_BACKUP_KGC_TYP? :? specifies compression type used by kgc BASIC
E?????????????????? compression

_BACKUP_KGC_WIN? :? specifies window size for MEDIUM compression
DOWBITS

_BACKUP_KSFQ_BU? :? number of buffers used for backup/restore
FCNT

_BACKUP_KSFQ_BU? :? maximum amount of memory (in bytes) used for buffers
FMEM_MAX??????????? for backup/restore

_BACKUP_KSFQ_BU? :? size of buffers used for backup/restore
FSZ

_BACKUP_LZO_SIZ? :? specifies buffer size for LOW compression
E

_BACKUP_MAX_GAP? :? largest gap in an incremental/optimized backup buffer,
_SIZE?????????????? in bytes

_BACKUP_MIN_CT_? :? mimimun size in bytes of change tracking to apply
UNUSED_OPTIM??????? unused space optimuzation

_BACKUP_SEQ_BUF? :? number of buffers used for non-DISK channels
CNT

_BACKUP_SEQ_BUF? :? size of buffers used for non-DISK channels
SZ

_BCT_BITMAPS_PE? :? number of bitmaps to store for each datafile
R_FILE

_BCT_BUFFER_ALL? :? maximum size of all change tracking buffer allocations,
OCATION_MAX???????? in bytes

_BCT_BUFFER_ALL? :? mininum number of extents to allocate per buffer
OCATION_MIN_EXT???? allocation
ENTS

_BCT_BUFFER_ALL? :? size of one change tracking buffer allocation,in bytes
OCATION_SIZE

_BCT_CHUNK_SIZE? :? change tracking datafile chunk size,in bytes
_BCT_CRASH_RESE? :? change tracking reserved crash recovery SGA space,in
RVE_SIZE??????????? bytes

_BCT_FILE_BLOCK? :? block size of change tracking file,in bytes
_SIZE

_BCT_FILE_EXTEN? :? extent size of change tracking file,in bytes
T_SIZE

_BCT_FIXTAB_FIL? :? change tracking file for fixed tables
E

_BCT_HEALTH_CHE? :? CTWR health check interval (seconds),zero to disable
CK_INTERVAL

_BCT_INITIAL_PR? :? initial number of entries in the private change
IVATE_DBA_BUFFE???? tracking dba buffers
R_SIZE

_BCT_MRP_TIMEOU? :? CTWR MRP wait timeout (seconds),zero to wait forever
T

_BCT_PUBLIC_DBA? :? allow dynamic resizing of public dba buffers,zero to
_BUFFER_DYNRESI???? disable
ZE

_BCT_PUBLIC_DBA? :? max buffer size permitted for public dba buffers,in
_BUFFER_MAXSIZE???? bytes

_BCT_PUBLIC_DBA? :? total size of all public change tracking dba buffers,
_BUFFER_SIZE??????? in bytes

_BG_SPAWN_DIAG_? :? background processes spawn diagnostic options
OPTS

_BITMAP_OR_IMPR? :? controls extensions to partition pruning for general
OVEMENT_ENABLED???? predicates

_BLOCKING_SESS_? :? blocking session graph cache size in bytes
GRAPH_CACHE_SIZ
E

_BLOCKS_PER_CAC? :? number of consecutive blocks per global cache server
HE_SERVER

_BLOCK_LEVEL_OF? :? High Latency Threshold for Block Level Offload
FLOAD_HIGH_LAT_???? operations
THRESH

_BLOCK_SAMPLE_R? :? controls readahead value during block sampling
EADAHEAD_PROB_T
HRESHOLD

_BLOOM_FILTER_D? :? debug level for bloom filtering
EBUG

_BLOOM_FILTER_E? :? enables or disables bloom filter
NABLED

_BLOOM_FILTER_S? :? bloom filter vector size (in KB)
IZE

_BLOOM_FOLDING_? :? bloom filter folding density lower bound
DENSITY

_BLOOM_FOLDING_? :? Enable folding of bloom filter
ENABLED

_BLOOM_FOLDING_? :? bloom filter folding size lower bound (in KB)
MIN

_BLOOM_MAX_SIZE? :? maximum bloom filter size (in KB)
_BLOOM_MINMAX_E? :? enable or disable bloom min max filtering
NABLED

_BLOOM_PREDICAT? :? enables or disables bloom filter predicate pushdown
E_ENABLED

_BLOOM_PREDICAT? :? enables or disables bloom filter predicate offload to
E_OFFLOAD?????????? cells

_BLOOM_PRUNING_? :? Enable partition pruning using bloom filtering
ENABLED

_BLOOM_PUSHING_? :? bloom filter pushing size upper bound (in KB)
MAX

_BLOOM_PUSHING_? :? bloom filter combined pushing size upper bound (in KB)
TOTAL_MAX

_BLOOM_RM_FILTE? :? remove bloom predicate in favor of zonemap join pruning
R?????????????????? predicate

_BLOOM_SM_ENABL? :? enable bloom filter optimization using slave mapping
ED

_BRANCH_TAGGING? :? enable branch tagging for distributed transaction
_BROADCAST_SCN_? :? broadcast-on-commit scn mode
MODE

_BROADCAST_SCN_? :? broadcast-on-commit scn wait timeout in centiseconds
WAIT_TIMEOUT

_BSLN_ADAPTIVE_? :? Adaptive Thresholds Enabled
THRESHOLDS_ENAB
LED

_BT_MMV_QUERY_R? :? allow rewrites with multiple MVs and base tables
EWRITE_ENABLED

_BUFFERED_MESSA? :? Buffered message spill age
GE_SPILL_AGE

_BUFFERED_PUBLI? :? Flow control threshold for buffered publishers except
SHER_FLOW_CONTR???? capture
OL_THRESHOLD

_BUFFER_BUSY_WA? :? buffer busy wait time in centiseconds
IT_TIMEOUT

_BUFQ_STOP_FLOW? :? Stop enforcing flow control for buffered queues
_CONTROL

_BUILD_DEFERRED? :? DEFERRED MV creation skipping MV log setup update
_MV_SKIPPING_MV
LOG_UPDATE

_BUMP_HIGHWATER? :? how many blocks should we allocate per free list on
_MARK_COUNT???????? advancing HWM

_BWR_FOR_FLUSHE? :? if TRUE,generate a BWR for a flushed PI
D_PI

_BYPASS_SRL_FOR? :? bypass SRL for S/O EOR logs
_SO_EOR

_BYPASS_XPLATFO? :? bypass datafile header cross-platform-compliance errors
RM_ERROR

_B_TREE_BITMAP_? :? enable the use of bitmap plans for tables w. only
PLANS?????????????? B-tree indexes

_CACHE_ORL_DURI? :? cache online logs
NG_OPEN

_CACHE_STATS_MO? :? if TRUE,enable cache stats monitoring
NITOR

_CAPTURE_BUFFER? :? To set the size of the PGA I/O recording buffers
_SIZE

_CAPTURE_PUBLIS? :? Flow control threshold for capture publishers
HER_FLOW_CONTRO
L_THRESHOLD

_CASE_SENSITIVE? :? case sensitive logon enabled
_LOGON

_CAUSAL_STANDBY? :? Causal standby wait timeout
_WAIT_TIMEOUT

_CDB_COMPATIBLE? :? CDB Compatible
_CDB_RAC_AFFINI? :? rac affinity for parallel cdb operations
TY

_CDC_SUBSCRIPTI? :? Change Data Capture subscription_owner
ON_OWNER

_CDMP_DIAGNOSTI? :? cdmp directory diagnostic level
C_LEVEL

_CELL_FAST_FILE? :? Allow optimized file creation path for Cells
_CREATE

_CELL_FAST_FILE? :? Allow optimized rman restore for Cells
_RESTORE

_CELL_FILE_FORM? :? Cell file format chunk size in MB
AT_CHUNK_SIZE

_CELL_INDEX_SCA? :? enable CELL processing of index FFS
N_ENABLED

_CELL_MATERIALI? :? Force materialization of all offloadable expressions on
ZE_ALL_EXPRESSI???? the cells
ONS

_CELL_MATERIALI? :? enable offload of expressions underlying virtual
ZE_VIRTUAL_COLU???? columns to cells
MNS

_CELL_OBJECT_EX? :? flashcache object expiration timeout
PIRATION_HOURS

_CELL_OFFLOAD_C? :? specifies capability table to load
APABILITIES_ENA
BLED

_CELL_OFFLOAD_C? :? enable complex SQL processing offload to cells
OMPLEX_PROCESSI
NG

_CELL_OFFLOAD_E? :? enable offload of expressions to cells
XPRESSIONS

_CELL_OFFLOAD_H? :? Query offloading of hybrid columnar compressed tables
YBRIDCOLUMNAR?????? to exadata

_CELL_OFFLOAD_P? :? enable out-of-order SQL processing offload to cells
REDICATE_REORDE
RING_ENABLED

_CELL_OFFLOAD_S? :? enable offload of SYS_CONTEXT evaluation to cells
YS_CONTEXT

_CELL_OFFLOAD_T? :? enable timezone related SQL processing offload to cells
IMEZONE

_CELL_OFFLOAD_V? :? enable offload of predicates on virtual columns to
IRTUAL_COLUMNS????? cells

_CELL_RANGE_SCA? :? enable CELL processing of index range scans
N_ENABLED

_CELL_STORIDX_M? :? Cell Storage Index mode
ODE

_CGS_ALLGROUP_P? :? CGS DBALL group polling interval in milli-seconds
OLL_TIME

_CGS_COMM_READI? :? CGS communication readiness check
NESS_CHECK

_CGS_DBALL_GROU? :? CGS DBALL group registration type
P_REGISTRATION

_CGS_DBGROUP_PO? :? CGS DB group polling interval in milli-seconds
LL_TIME

_CGS_HEALTH_CHE? :? CGS health check during reconfiguration
CK_IN_RECONFIG

_CGS_MEMBERKILL? :? allow a RIM instance to issue a CSS member kill
_FROM_RIM_INSTA
NCE

_CGS_MSG_BATCHI? :? CGS message batching
NG

_CGS_MSG_BATCH_? :? CGS message batch size in bytes
SIZE

_CGS_NODE_KILL_? :? CGS node kill escalation to CSS
ESCALATION

_CGS_NODE_KILL_? :? CGS wait time to escalate node kill to CSS in seconds
ESCALATION_WAIT

_CGS_RECONFIG_E? :? CGS reconfiguration extra wait time for CSS in seconds
XTRA_WAIT

_CGS_RECONFIG_T? :? CGS reconfiguration timeout interval
IMEOUT

_CGS_SEND_TIMEO? :? CGS send timeout value
UT

_CGS_TICKETS???? :? CGS messaging tickets
_CGS_TICKET_SEN? :? CGS ticket active sendback percentage threshold
DBACK

_CGS_ZOMBIE_MEM? :? CGS zombie member kill wait time in seconds
BER_KILL_WAIT

_CHANGE_VECTOR_? :? Number of change vector buffers for media recovery
BUFFERS

_CHECK_BLOCK_AF? :? perform block check after checksum if both are turned
TER_CHECKSUM??????? on

_CHECK_BLOCK_NE? :? check block new invariant for flashback
W_INVARIANT_FOR
_FLASHBACK

_CHECK_COLUMN_L? :? check column length
ENGTH

_CHECK_PDBID_IN? :? Enable checking of pluggable database ID in redo
_REDO

_CHECK_TS_THRES? :? check tablespace thresholds
HOLD

_CLEANOUT_SHRCU? :? if TRUE,cleanout shrcur buffers
R_BUFFERS

_CLEANUP_ROLLBA? :? no. of undo entries to apply per transaction cleanup
CK_ENTRIES

_CLEANUP_TIMEOU? :? timeout value for PMON cleanup
T

_CLEANUP_TIMEOU? :? flags for PMON cleanup timeout
T_FLAGS

_CLEAR_BUFFER_B? :? Always zero-out buffer before reuse for security
EFORE_REUSE

_CLIENT_ENABLE_? :? enable automatic unregister after a send fails with
AUTO_UNREGISTER???? timeout

_CLIENT_NTFN_CL? :? interval after which dead client registration cleanup
EANUP_INTERVAL????? task repeats

_CLIENT_NTFN_PI? :? time between pings to unreachable notification clients
NGINTERVAL

_CLIENT_NTFN_PI? :? number of times to ping unreachable notification
NGRETRIES?????????? clients

_CLIENT_NTFN_PI? :? timeout to connect to unreachable notification clients
NGTIMEOUT

_CLIENT_RESULT_? :? bypass the client result cache
CACHE_BYPASS

_CLIENT_TSTZ_ER? :? Should Client give error for suspect Timestamp with
ROR_CHECK?????????? Timezone operations

_CLI_CACHEBKTAL? :? Percentage of memory to allocate
LOC

_CLONE_ONE_PDB_? :? Recover ROOT and only one PDB in clone database
RECOVERY

_CLOSE_CACHED_O? :? close cursors cached by PL/SQL at each commit
PEN_CURSORS

_CLOSE_DEQ_BY_C? :? Close Dequeue By Condition Cursors
OND_CURS

_CLOUD_NAME????? :? gsm cloud name
_CLUSTERWIDE_GL? :? enable/disable clusterwide global transactions
OBAL_TRANSACTIO
NS

_CLUSTER_LIBRAR? :? cluster library selection
Y

_COLLAPSE_WAIT_? :? collapse wait history
HISTORY

_COLLECT_TEMPUN? :? Collect Statistics v$tempundostat
DO_STATS

_COLLECT_UNDO_S? :? Collect Statistics v$undostat
TATS

_COLUMN_COMPRES? :? Column compression ratio
SION_FACTOR

_COLUMN_ELIMINA? :? turn off predicate-only column elimination
TION_OFF

_COLUMN_TRACKIN? :? column usage tracking
G_LEVEL

_COMMON_DATA_VI? :? common objects returned through dictionary views
EW_ENABLED

_COMMON_USER_PR? :? Enforce restriction on a prefix of a Common
EFIX??????????????? User/Role/Profile name

_COMPILATION_CA? :? Size of the compilation call heaps extents
LL_HEAP_EXTENT_
SIZE

_COMPLEX_VIEW_M? :? enable complex view merging
ERGING

_COMPRESSION_AB? :? number of recompression above cache for sanity check
OVE_CACHE

_COMPRESSION_AD? :? Compression advisor
VISOR

_COMPRESSION_CH? :? percentage of chained rows allowed for Compression
AIN

_COMPRESSION_CO? :? Compression compatability
MPATIBILITY

_CONCURRENCY_CH? :? what is the chosen value of concurrency
OSEN

_CONNECTION_BRO? :? connection broker host for listen address
KER_HOST

_CONNECT_BY_USE? :? use union all for connect by
_UNION_ALL

_CONTROLFILE_AU? :? time delay (in seconds) for performing controlfile
TOBACKUP_DELAY????? autobackups

_CONTROLFILE_BA? :? enable check of the copied blocks during controlfile
CKUP_COPY_CHECK???? backup copy

_CONTROLFILE_BL? :? control file block size in bytes
OCK_SIZE

_CONTROLFILE_CE? :? Flash cache hint for control file accesses
LL_FLASH_CACHIN
G

_CONTROLFILE_EN? :? dump the system states after controlfile enqueue
QUEUE_DUMP????????? timeout

_CONTROLFILE_EN? :? control file enqueue max holding time in seconds
QUEUE_HOLDING_T
IME

_CONTROLFILE_EN? :? control file enqueue holding time tracking size
QUEUE_HOLDING_T
IME_TRACKING_SI
ZE

_CONTROLFILE_EN? :? control file enqueue timeout in seconds
QUEUE_TIMEOUT

_CONTROLFILE_SE? :? control file initial section size
CTION_INIT_SIZE

_CONTROLFILE_SE? :? control file max expansion rate
CTION_MAX_EXPAN
D

_CONTROLFILE_UP? :? controlfile update sanity check
DATE_CHECK

_CONVERT_SET_TO? :? enables conversion of set operator to join
_JOIN

_COORD_MESSAGE_? :? parallel recovery coordinator side extra message buffer
BUFFER????????????? size

_CORRUPTED_ROLL? :? corrupted undo segment list
BACK_SEGMENTS

_COST_EQUALITY_? :? enables costing of equality semi-join
SEMI_JOIN

_CPU_EFF_THREAD? :? CPU effective thread multiplier
_MULTIPLIER

_CPU_TO_IO?????? :? divisor for converting CPU cost to I/O cost
_CP_NUM_HASH_LA? :? connection pool number of hash latches
TCHES

_CRASH_DOMAIN_O? :? allow domain to exit for exceptions in any thread
N_EXCEPTION

_CREATE_STAT_SE? :? create ilm statistics segment
GMENT

_CREATE_TABLE_I? :? allow creation of table in a cluster not owned by the
N_ANY_CLUSTER?????? user

_CR_GRANT_GLOBA? :? if TRUE,grant lock for CR requests when block is in
L_ROLE????????????? global role

_CR_GRANT_LOCAL? :? turn 3-way CR grants off,make it automatic,or turn it
_ROLE?????????????? on

_CR_GRANT_ONLY?? :? if TRUE,grant locks when possible and do not send the
block

_CR_SERVER_LOG_? :? if TRUE,flush redo log before serving a CR buffer
FLUSH

_CR_TRC_BUF_SIZ? :? size of cr trace buffer
E

_CTX_DOC_POLICY? :? enable ctx_doc.policy_stems api
_STEMS

_CURSOR_BIND_CA? :? maximum size of the cursor bind capture area
PTURE_AREA_SIZE

_CURSOR_BIND_CA? :? interval (in seconds) between two bind capture for a
PTURE_INTERVAL????? cursor

_CURSOR_CACHE_T? :? number of seconds a session cached cursor stay in
IME???????????????? cache.

_CURSOR_DB_BUFF? :? additional number of buffers a cursor can pin at once
ERS_PINNED

_CURSOR_FEATURE? :? Shared cursor features enabled bits.
S_ENABLED

_CURSOR_OBSOLET? :? Number of cursors per parent before obsoletion.
E_THRESHOLD

_CURSOR_PLAN_EN? :? enable collection and display of cursor plans
ABLED

_CURSOR_PLAN_HA? :? version of cursor plan hash value
SH_VERSION

_CURSOR_PLAN_UN? :? enables/disables using unparse to build
PARSE_ENABLED?????? projection/predicates

_CURSOR_RELOAD_? :? Number of failed reloads before marking cursor unusable
FAILURE_THRESHO
LD

_CURSOR_RUNTIME? :? Shared cursor runtime heap memory limit
HEAP_MEMLIMIT

_CURSOR_STATS_E? :? Enable cursor stats
NABLED

_CU_ROW_LOCKING? :? CU row level locking
_CVMAP_BUFFERS?? :? Number of change vector buffers for multi instance
media recovery

_CVW_ENABLE_WEA? :? enable weak view checking
K_CHECKING

_DATAFILE_COW??? :? Use copy on write snapshot for the renamed file
_DATAFILE_WRITE? :? datafile write errors crash instance
_ERRORS_CRASH_I
NSTANCE

_DATAPUMP_COMPR? :? specifies buffer size for BASIC compression algorithm
ESSBAS_BUFFER_S
IZE

_DATAPUMP_METAD? :? specifies buffer size for metadata file I/O
ATA_BUFFER_SIZE

_DATAPUMP_TABLE? :? specifies buffer size for table data file I/O
DATA_BUFFER_SIZ
E

_DATA_TRANSFER_? :? Percentange * 100 of buffer cache to transfer to data
CACHE_BC_PERC_X???? transfer cache
100

_DATA_TRANSFER_? :? Size of data transfer cache
CACHE_SIZE

_DATA_WAREHOUSI? :? if TRUE,enable data warehousing scan buffers
NG_SCAN_BUFFERS

_DBFS_MODIFY_IM? :? DBFS Link allows implicit fetch on modify – only on
PLICIT_FETCH??????? SecureFiles

_DBG_PROC_START? :? debug process startup
UP

_DBG_SCAN??????? :? generic scan debug
_DBMS_SQL_SECUR? :? Security level in DBMS_SQL
ITY_LEVEL

_DBOP_ENABLED??? :? Any positive number enables automatic DBOP monitoring.
0 is disabled

_DBPOOL_NAME???? :? gsm database pool name
_DBRM_DYNAMIC_T? :? DBRM dynamic threshold setting
HRESHOLD

_DBRM_NUM_RUNNA? :? Resource Manager number of runnable list per NUMA node
BLE_LIST

_DBRM_QUANTUM??? :? DBRM quantum
_DBRM_RUNCHK???? :? Resource Manager Diagnostic Running Thread Check
_DBRM_SHORT_WAI? :? Resource Manager short wait length
T_US

_DBWR_ASYNC_IO?? :? Enable dbwriter asynchronous writes
_DBWR_SCAN_INTE? :? dbwriter scan interval
RVAL

_DBWR_TRACING??? :? Enable dbwriter tracing
_DB_16K_FLASH_C? :? flash cache file for 16k block size
ACHE_FILE

_DB_16K_FLASH_C? :? flash cache size for _db_16k_flash_cache_file
ACHE_SIZE

_DB_2K_FLASH_CA? :? flash cache file for 2k block size
CHE_FILE

_DB_2K_FLASH_CA? :? flash cache size for _db_2k_flash_cache_file
CHE_SIZE

_DB_32K_FLASH_C? :? flash cache file for 32k block size
ACHE_FILE

_DB_32K_FLASH_C? :? flash cache size for _db_32k_flash_cache_file
ACHE_SIZE

_DB_4K_FLASH_CA? :? flash cache file for 4k block size
CHE_FILE

_DB_4K_FLASH_CA? :? flash cache size for _db_4k_flash_cache_file
CHE_SIZE

_DB_8K_FLASH_CA? :? flash cache file for 8k block size
CHE_FILE

_DB_8K_FLASH_CA? :? flash cache size for _db_8k_flash_cache_file
CHE_SIZE

_DB_AGING_COOL_? :? Touch count set when buffer cooled
COUNT

_DB_AGING_FREEZ? :? Make CR buffers always be too cold to keep in cache
E_CR

_DB_AGING_HOT_C? :? Touch count which sends a buffer to head of replacement
RITERIA???????????? list

_DB_AGING_STAY_? :? Touch count set when buffer moved to head of
COUNT?????????????? replacement list

_DB_AGING_TOUCH? :? Touch count which sends a buffer to head of replacement
_TIME?????????????? list

_DB_ALWAYS_CHEC? :? Always perform block check and checksum for System
K_SYSTEM_TS???????? tablespace

_DB_BLOCKS_PER_? :? Number of blocks per hash latch
HASH_LATCH

_DB_BLOCK_ADJCH? :? adjacent cache buffer checks – low blkchk overwrite
ECK???????????????? parameter

_DB_BLOCK_ADJCH? :? adjacent cache buffer check level
K_LEVEL

_DB_BLOCK_ALIGN? :? Align Direct Reads
_DIRECT_READ

_DB_BLOCK_BAD_W? :? enable bad write checks
RITE_CHECK

_DB_BLOCK_BUFFE? :? Number of database blocks cached in memory: hidden
RS????????????????? parameter

_DB_BLOCK_CACHE? :? Always clone data blocks on get (for debugging)
_CLONE

_DB_BLOCK_CACHE? :? buffer header tracing (non-zero only when debugging)
_HISTORY

_DB_BLOCK_CACHE? :? buffer header tracing level
_HISTORY_LEVEL

_DB_BLOCK_CACHE? :? buffer header tracing for lru operations
_HISTORY_LRU

_DB_BLOCK_CACHE? :? number of unmapped buffers (for tracking swap calls on
_NUM_UMAP?????????? blocks)

_DB_BLOCK_CACHE? :? protect database blocks (true only when debugging)
_PROTECT

_DB_BLOCK_CACHE? :? protect database blocks (for strictly internal use
_PROTECT_INTERN???? only)
AL

_DB_BLOCK_CHECK? :? Check more and dump block before image for debugging
_FOR_DEBUG

_DB_BLOCK_CHECK? :? check objd and typ on cache disk read
_OBJTYP

_DB_BLOCK_CHUNK? :? chunkify noncontig multi block reads
IFY_NCMBR

_DB_BLOCK_CORRU? :? threshold number of block recovery attempts
PTION_RECOVERY_
THRESHOLD

_DB_BLOCK_DO_FU? :? do full block read even if some blocks are in cache
LL_MBREADS

_DB_BLOCK_HASH_? :? Number of database block hash buckets
BUCKETS

_DB_BLOCK_HASH_? :? Number of database block hash latches
LATCHES

_DB_BLOCK_HEADE? :? number of extra buffer headers to use as guard pages
R_GUARD_LEVEL

_DB_BLOCK_HI_PR? :? Fraction of writes for high priority reasons
IORITY_BATCH_SI
ZE

_DB_BLOCK_KNOWN? :? Initial Percentage of buffers to maintain known clean
_CLEAN_PCT

_DB_BLOCK_LRU_L? :? number of lru latches
ATCHES

_DB_BLOCK_MAX_C? :? Maximum Allowed Number of CR buffers per dba
R_DBA

_DB_BLOCK_MAX_S? :? Percentage of buffers to inspect when looking for free
CAN_PCT

_DB_BLOCK_MED_P? :? Fraction of writes for medium priority reasons
RIORITY_BATCH_S
IZE

_DB_BLOCK_NUMA?? :? Number of NUMA nodes
_DB_BLOCK_PREFE? :? Batched IO enable fast longjumps
TCH_FAST_LONGJU
MPS_ENABLED

_DB_BLOCK_PREFE? :? Prefetch limit in blocks
TCH_LIMIT

_DB_BLOCK_PREFE? :? Prefetch force override in blocks
TCH_OVERRIDE

_DB_BLOCK_PREFE? :? Batched IO enable private cache
TCH_PRIVATE_CAC
HE_ENABLED

_DB_BLOCK_PREFE? :? Prefetch quota as a percent of cache size
TCH_QUOTA

_DB_BLOCK_PREFE? :? Batched IO enable skip reading buffers
TCH_SKIP_READIN
G_ENABLED

_DB_BLOCK_PREFE? :? Allowed wasted percent threshold of prefetched size
TCH_WASTED_THRE
SHOLD_PERC

_DB_BLOCK_TABLE? :? Size of shared table scan read buffer
_SCAN_BUFFER_SI
ZE

_DB_BLOCK_TEMP_? :? generate redo for temp blocks
REDO

_DB_BLOCK_TRACE? :? trace buffer protect calls
_PROTECT

_DB_BLOCK_VLM_C? :? check of rvlm mapping leaks (for debugging)
HECK

_DB_BLOCK_VLM_L? :? Threshold for allowable vlm leaks
EAK_THRESHOLD

_DB_CACHE_ADVIC? :? cache advisory maximum multiple of current size to
E_MAX_SIZE_FACT???? similate
OR

_DB_CACHE_ADVIC? :? cache advisory sampling factor
E_SAMPLE_FACTOR

_DB_CACHE_ADVIC? :? cache simulation sanity check
E_SANITY_CHECK

_DB_CACHE_BLOCK? :? dump short call stack for block reads
_READ_STACK_TRA
CE

_DB_CACHE_CRX_C? :? check for costly crx examination functions
HECK

_DB_CACHE_MISS_? :? check LEs after cache miss
CHECK_LES

_DB_CACHE_MMAN_? :? check for wait latch get under MMAN ops in kcb
LATCH_CHECK

_DB_CACHE_PRE_W? :? Buffer Cache Pre-Warm Enabled : hidden parameter
ARM

_DB_CACHE_PROCE? :? maximum number of cr pins a process may have
SS_CR_PIN_MAX

_DB_CACHE_WAIT_? :? trace new kslwaits
DEBUG

_DB_CHANGE_NOTI? :? enable db change notification
FICATION_ENABLE

_DB_CHECK_CELL_? :
HINTS

_DB_DISABLE_TEM? :? Disable Temp Encryption for Spills
P_ENCRYPTION

_DB_DUMP_FROM_D? :? dump contents from disk and efc
ISK_AND_EFC

_DB_DW_SCAN_ADA? :? if TRUE,enable adaptive DW scan cooling
PTIVE_COOLING

_DB_DW_SCAN_MAX? :? DW Scan adaptive cooling max shadow count
_SHADOW_COUNT

_DB_DW_SCAN_OBJ? :? DW Scan object cooling factor to cool all temperatures
_COOLING_FACTOR

_DB_DW_SCAN_OBJ? :? DW Scan object cooling interval in number of scans,
_COOLING_INTERV???? seconds,or pct of cache size
AL

_DB_DW_SCAN_OBJ? :? DW scan objtect cooling policy
_COOLING_POLICY

_DB_DW_SCAN_OBJ? :? DW Scan object warming increment when an object is
_WARMING_INCREM???? scanned
ENT

_DB_FAST_OBJ_CH? :? enable fast object drop sanity check
ECK

_DB_FAST_OBJ_CK? :? enable fast object checkpoint
PT

_DB_FAST_OBJ_TR? :? enable fast object truncate
UNCATE

_DB_FILE_DIRECT? :? Sequential I/O buf size
_IO_COUNT

_DB_FILE_EXEC_R? :? multiblock read count for regular clients
EAD_COUNT

_DB_FILE_FORMAT? :? Block formatting I/O buf count
_IO_BUFFERS

_DB_FILE_NONCON? :? number of noncontiguous db blocks to be prefetched
TIG_MBLOCK_READ
_COUNT

_DB_FILE_OPTIMI? :? multiblock read count for regular clients
ZER_READ_COUNT

_DB_FLASHBACK_I? :? Flashback IO Buffer Size
OBUF_SIZE

_DB_FLASHBACK_L? :? Minimum flashback database log size in bytes
OG_MIN_SIZE

_DB_FLASHBACK_L? :? Minimum flashback database log total space in bytes
OG_MIN_TOTAL_SP
ACE

_DB_FLASHBACK_N? :? Flashback Number of IO buffers
UM_IOBUF

_DB_FLASH_CACHE? :? Flash cache force replenish lower limit in buffers
_FORCE_REPLENIS
H_LIMIT

_DB_FLASH_CACHE? :? Flash cache keep buffer upper limit in percentage
_KEEP_LIMIT

_DB_FLASH_CACHE? :? Flash cache maximum latency allowed in 10 milliseconds
_MAX_LATENCY

_DB_FLASH_CACHE? :? Flash cache maximum outstanding writes allowed
_MAX_OUTSTANDIN
G_WRITES

_DB_FLASH_CACHE? :? Flash cache max read retry
_MAX_READ_RETRY

_DB_FLASH_CACHE? :? Flash cache maximum slow io allowed
_MAX_SLOW_IO

_DB_FLASH_CACHE? :? Flash cache write buffer upper limit in percentage
_WRITE_LIMIT

_DB_HANDLES????? :? System-wide simultaneous buffer operations
_DB_HANDLES_CAC? :? Buffer handles cached each process
HED

_DB_HOT_BLOCK_T? :? track hot blocks for hash latch contention
RACKING

_DB_INDEX_BLOCK? :? index block checking override parameter
_CHECKING

_DB_INITIAL_CAC? :? size of cache created at startup
HESIZE_CREATE_M
B

_DB_L2_TRACING?? :? flash cache debug tracing
_DB_LARGE_DIRTY? :? Number of buffers which force dirty queue to be written
_QUEUE

_DB_LOST_WRITE_? :? Enable scn based lost write detection mechanism
CHECKING

_DB_LOST_WRITE_? :? Enable _db_lost_write_checking tracing
TRACING

_DB_MTTR_ADVICE? :? MTTR advisory
_DB_MTTR_PARTIT? :? number of partitions for MTTR advisory
IONS

_DB_MTTR_SAMPLE? :? MTTR simulation sampling factor
_FACTOR

_DB_MTTR_SIM_TA? :? MTTR simulation targets
RGET

_DB_MTTR_SIM_TR? :? MTTR simulation trace size
ACE_SIZE

_DB_MTTR_TRACE_? :? dump trace entries to alert file
TO_ALERT

_DB_NOARCH_DISB? :? Image redo logging (NOARCHIVEMODE)
LE_OPTIM

_DB_NUM_EVICT_W? :? number of evict wait events
AITEVENTS

_DB_NUM_GSM????? :? database number in gsm dbpool
_DB_OBJ_ENABLE_? :? enable ksr in object checkpoint/reuse
KSR

_DB_PERCENT_HOT? :? Percent of default buffer pool considered hot
_DEFAULT

_DB_PERCENT_HOT? :? Percent of keep buffer pool considered hot
_KEEP

_DB_PERCENT_HOT? :? Percent of recycle buffer pool considered hot
_RECYCLE

_DB_PERCPU_CREA? :? size of cache created per cpu in deferred cache create
TE_CACHESIZE

_DB_PREFETCH_HI? :? maintain prefetch histogram statistics in x$kcbprfhs
STOGRAM_STATIST
ICS

_DB_RECOVERY_TE? :? default database recovery temporal file location
MPORAL_FILE_DES
T

_DB_REQUIRED_PE? :? percent of fairshare a processor group should always
RCENT_FAIRSHARE???? use
_USAGE

_DB_ROW_OVERLAP? :? row overlap checking override parameter for data/index
_CHECKING?????????? blocks

_DB_TODEFER_CAC? :? buffer cache deferred create
HE_CREATE

_DB_WRITER_CHUN? :? Number of writes DBWR should wait for
K_WRITES

_DB_WRITER_COAL? :? Size of memory allocated to dbwriter for coalescing
ESCE_AREA_SIZE????? writes

_DB_WRITER_COAL? :? Limit on size of coalesced write
ESCE_WRITE_LIMI
T

_DB_WRITER_FLUS? :? If FALSE,DBWR will not downgrade IMU txns for AGING
H_IMU

_DB_WRITER_HIST? :? maintain dbwr histogram statistics in x$kcbbhs
OGRAM_STATISTIC
S

_DB_WRITER_MAX_? :? Max number of outstanding DB Writer IOs
WRITES

_DB_WRITER_NOME? :? Enable DBWR no-memcopy coalescing
MCOPY_COALESCE

_DB_WRITER_VERI? :? Enable lost write detection mechanism
FY_WRITES

_DDE_FLOOD_CONT? :? Initialize Flood Control at database open
ROL_INIT

_DD_VALIDATE_RE? :? GES deadlock detection validate remote locks
MOTE_LOCKS

_DEADLOCK_DIAGN? :? automatic deadlock resolution diagnostics level
OSTIC_LEVEL

_DEADLOCK_RECOR? :? record resolved deadlocks to the alert log
D_TO_ALERT_LOG

_DEADLOCK_RESOL? :? create incidents when resolving any deadlock?
UTION_INCIDENTS
_ALWAYS

_DEADLOCK_RESOL? :? create incidents during deadlock resolution
UTION_INCIDENTS
_ENABLED

_DEADLOCK_RESOL? :? automatic deadlock resolution level
UTION_LEVEL

_DEADLOCK_RESOL? :? the minimum wait timeout required for deadlock
UTION_MIN_WAIT_???? resolution
TIMEOUT_SECS

_DEADLOCK_RESOL? :? the amount of time given to process a deadlock
UTION_SIGNAL_PR???? resolution signal
OCESS_THRESH_SE
CS

_DEAD_PROCESS_S? :? PMON dead process scan interval (in seconds)
CAN_INTERVAL

_DEDICATED_SERV? :? dedicated server poll count
ER_POLL_COUNT

_DEDICATED_SERV? :? dedicated server post/wait
ER_POST_WAIT

_DEDICATED_SERV? :? dedicated server post/wait call
ER_POST_WAIT_CA
LL

_DEFAULT_ENCRYP? :? default encryption algorithm
T_ALG

_DEFAULT_NON_EQ? :? sanity check on default selectivity for like/range
UALITY_SEL_CHEC???? predicate
K

_DEFERRED_CONST? :? Deferred constant folding mode
ANT_FOLDING_MOD
E

_DEFERRED_LOG_D? :? consider deferred log dest as valid for log deletion
EST_IS_VALID??????? (TRUE/FALSE)

_DEFERRED_SEG_I? :? Enable Deferred Segment Creation in Seed
N_SEED

_DEFER_EOR_ORL_? :? defer EOR ORL archival for switchover
ARCH_FOR_SO

_DEFER_LOG_BOUN? :? defer media recovery checkpoint at log boundary
DARY_CKPT

_DEFER_LOG_COUN? :? Number of log boundaries media recovery checkpoint lags
T?????????????????? behind

_DEFER_RCV_DURI? :? Defer recovery during switchover to standby
NG_SW_TO_SBY

_DEFER_SGA_ALLO? :? Chunk size for defer sga allocation
C_CHUNK_SIZE

_DEFER_SGA_ENAB? :? Enable deferred shared memory allocation for SGA
LED

_DEFER_SGA_MIN_? :? Minimum shared pool size at startup with deferred sga
SPSZ_AT_STARTUP???? enabled

_DEFER_SGA_MIN_? :? Minimum total deferred segs size for defer sga
TOTAL_DEFER_SEG???? allocation
S_SZ

_DEFER_SGA_TEST? :? SA** sleeps for N secs before allocating a deferred
_ALLOC_INTV???????? segment

_DELAY_INDEX_MA? :? delays index maintenance until after MV is refreshed
INTAIN

_DELTA_PUSH_SHA? :? enable delta push if greater than the # of share
RE_BLOCKERS???????? blockers

_DEQ_EXECUTE_RE? :? deq execute reset time
SET_TIME

_DEQ_HT_CHILD_L? :? deq ht child latches
ATCHES

_DEQ_HT_MAX_ELE? :? deq ht max elements
MENTS

_DEQ_LARGE_TXN_? :? deq large txn size
SIZE

_DEQ_LOG_ARRAY_? :? deq log array size
SIZE

_DEQ_MAXWAIT_TI? :? Change wait times between dequeue calls
ME

_DEQ_MAX_FETCH_? :? deq max fetch count
COUNT

_DESIRED_README? :? The desired percentage of redo reading from memory
M_RATE

_DG_BROKER_TRAC? :? data guard broker trace level
E_LEVEL

_DG_CF_CHECK_TI? :? Data Guard controlfile check timer
MER

_DG_CORRUPT_RED? :? Corrupt redo log validation during archivals
O_LOG

_DIAG_ADR_AUTO_? :? Enable/disable ADR MMON Auto Purging
PURGE

_DIAG_ADR_ENABL? :? Parameter to enable/disable Diag ADR
ED

_DIAG_ADR_TEST_? :? Test parameter for Diagnosability
PARAM

_DIAG_ARB_BEFOR? :? dump diagnostics before killing unresponsive ARBs
E_KILL

_DIAG_BACKWARD_? :? Backward Compatibility for Diagnosability
COMPAT

_DIAG_CC_ENABLE? :? Parameter to enable/disable Diag Call Context
D

_DIAG_CONF_CAP_? :? Parameter to enable/disable Diag Configuration Capture
ENABLED

_DIAG_CRASHDUMP? :? parameter for systemstate dump level,used by DIAG
_LEVEL????????????? during crash

_DIAG_DAEMON???? :? start DIAG daemon
_DIAG_DDE_ASYNC? :? diag dde async actions: message age limit (in seconds)
_AGE_LIMIT

_DIAG_DDE_ASYNC? :? diag dde async actions: action cputime limit (in
_CPUTIME_LIMIT????? seconds)

_DIAG_DDE_ASYNC? :? diag dde async actions: dispatch mode
_MODE

_DIAG_DDE_ASYNC? :? diag dde async actions: number of preallocated message
_MSGS?????????????? buffers

_DIAG_DDE_ASYNC? :? diag dde async actions: message buffer capacity
_MSG_CAPACITY

_DIAG_DDE_ASYNC? :? diag dde async actions: message processing rate – per
_PROCESS_RATE?????? loop

_DIAG_DDE_ASYNC? :? diag dde async actions: action runtime limit (in
_RUNTIME_LIMIT????? seconds)

_DIAG_DDE_ASYNC? :? diag dde async actions: max number of concurrent slave
_SLAVES???????????? processes

_DIAG_DDE_ENABL? :? enable DDE handling of critical errors
ED

_DIAG_DDE_FC_EN? :? Parameter to enable/disable Diag Flood Control
ABLED

_DIAG_DDE_FC_IM? :? Override Implicit Error Flood Control time parameter
PLICIT_TIME

_DIAG_DDE_FC_MA? :? Override Macro Error Flood Control time parameter
CRO_TIME

_DIAG_DDE_INC_P? :? The minimum delay between two MMON incident sweeps
ROC_DELAY?????????? (minutes)

_DIAG_DIAGNOSTI? :? Turn off diag diagnostics
CS

_DIAG_DUMP_REQU? :? DIAG dump request debug level (0-2)
EST_DEBUG_LEVEL

_DIAG_DUMP_TIME? :? timeout parameter for SYNC dump
OUT

_DIAG_ENABLE_ST? :? enable events in instance startup notifiers
ARTUP_EVENTS

_DIAG_HM_RC_ENA? :? Parameter to enable/disable Diag HM Reactive Checks
BLED

_DIAG_HM_TC_ENA? :? Parameter to enable/disable Diag HM Test(dummy) Checks
BLED

_DIAG_PROC_ENAB? :? enable hung process diagnostic API
LED

_DIAG_PROC_MAX_? :? hung process diagnostic API max wait time in
TIME_MS???????????? milliseconds

_DIAG_PROC_STAC? :? hung process diagnostic API stack capture type
K_CAPTURE_TYPE

_DIAG_TEST_SEG_? :? Sets trace segmentation to be in reincarnation mode
REINC_MODE

_DIAG_UTS_CONTR? :? UTS control parameter
OL

_DIAG_VERBOSE_E? :? Allow verbose error tracing on diag init
RROR_ON_INIT

_DIAG_XM_ENABLE? :? If TRUE,DIAG allows message exchanges across DB/ASM
D?????????????????? boundary

_DIMENSION_SKIP? :? control dimension skip when null feature
_NULL

_DIRECT_IO_SKIP? :? Skip current slot on error
_CUR_SLOT_ON_ER
ROR

_DIRECT_IO_SLOT? :? number of slots for direct path I/O
S

_DIRECT_IO_WSLO? :? number of write slots for direct path I/O
TS

_DIRECT_PATH_IN? :? disable direct path insert features
SERT_FEATURES

_DIRECT_READ_DE? :? enable direct read decision based on optimizer
CISION_STATISTI???? statistics
CS_DRIVEN

_DISABLE_12751?? :? disable policy timeout error (ORA-12751)
_DISABLE_12CBIG? :? DIsable Storing ILM Statistics in 12cBigFiles
FILE

_DISABLE_ACTIVE? :? disable active influx move during parallel media
_INFLUX_MOVE??????? recovery

_DISABLE_ADAPTI? :? adaptive shrunk aggregation
VE_SHRUNK_AGGRE
GATION

_DISABLE_APPLIA? :? Disable appliance-specific code
NCE_CHECK

_DISABLE_APPLIA? :? Disable appliance partnering algorithms
NCE_PARTNERING

_DISABLE_AUTOTU? :? disable autotune global transaction background
NE_GTX????????????? processes

_DISABLE_BLOCK_? :? disable block checking at the session level
CHECKING

_DISABLE_CELL_O? :? disable cell optimized backups
PTIMIZED_BACKUP
S

_DISABLE_CPU_CH? :? disable cpu_count check
ECK

_DISABLE_CURSOR? :? disable cursor sharing
_SHARING

_DISABLE_DATALA? :? disable datalayer sampling
YER_SAMPLING

_DISABLE_DIRECT? :? Disable directory link checking
ORY_LINK_CHECK

_DISABLE_DUPLEX? :? Turn off connection duplexing
_LINK

_DISABLE_FASTOP? :? Do Not Use Fastopen
EN

_DISABLE_FAST_A? :? fast aggregation
GGREGATION

_DISABLE_FAST_V? :? disable PL/SQL fast validation
ALIDATE

_DISABLE_FBA_QR? :? disable flashback archiver query rewrite
W

_DISABLE_FBA_WP? :? disable flashback archiver wait for prepared
R?????????????????? transactions

_DISABLE_FILE_L? :? disable file locks for control,data,redo log files
OCKS

_DISABLE_FLASHB? :? disable flashback archiver
ACK_ARCHIVER

_DISABLE_FLASHB? :? Don’t use the Flashback Recyclebin optimization
ACK_RECYCLEBIN_
OPT

_DISABLE_FLASHB? :? Disable flashback wait callback
ACK_WAIT_CALLBA
CK

_DISABLE_FUNCTI? :? disable function-based index matching
ON_BASED_INDEX

_DISABLE_GVAQ_C? :? Disable cache
ACHE

_DISABLE_HEALTH? :? Disable Health Check
_CHECK

_DISABLE_HIGHRE? :? disable high-res tick counter
S_TICKS

_DISABLE_IMAGE_? :? Disable Oracle executable image checking
CHECK

_DISABLE_IMPLIC? :? disable implicit row movement
IT_ROW_MOVEMENT

_DISABLE_INCREM? :? Disable incremental checkpoints for thread recovery
ENTAL_CHECKPOIN
TS

_DISABLE_INCREM? :? Disable incremental recovery checkpoint mechanism
ENTAL_RECOVERY_
CKPT

_DISABLE_INDEX_? :? disable index block prefetching
BLOCK_PREFETCHI
NG

_DISABLE_INITIA? :? disable initial block compression
L_BLOCK_COMPRES
SION

_DISABLE_INSTAN? :? disable instance type check for ksp
CE_PARAMS_CHECK

_DISABLE_INTERF? :? disable interface checking at startup
ACE_CHECKING

_DISABLE_KCBHXO? :? disable kcbh(c)xor OSD functionality
R_OSD

_DISABLE_KCBL_F? :? Disable KCBL flashback block new optimization
LASHBACK_BLOCKN
EW_OPT

_DISABLE_KCB_FL? :? Disable KCB flashback block new optimization
ASHBACK_BLOCKNE
W_OPT

_DISABLE_KGGHSH? :? disable kgghshcrc32chk OSD functionality
CRC32_OSD

_DISABLE_LATCH_? :? disable latch-free SCN writes using 32-bit compare &
FREE_SCN_WRITES???? swap
_VIA_32CAS

_DISABLE_LATCH_? :? disable latch-free SCN writes using 64-bit compare &
FREE_SCN_WRITES???? swap
_VIA_64CAS

_DISABLE_LOGGIN? :? Disable logging
G

_DISABLE_METRIC? :? Disable Metrics Group (or all Metrics Groups)
S_GROUP

_DISABLE_MULTIP? :? disable multiple block size support (for debugging)
LE_BLOCK_SIZES

_DISABLE_ODM???? :? disable odm feature
_DISABLE_PARALL? :? Disable parallel conventional loads
EL_CONVENTIONAL
_LOAD

_DISABLE_PRIMAR? :? disable primary bitmap switch
Y_BITMAP_SWITCH

_DISABLE_READ_O? :? Disable read-only open dictionary check
NLY_OPEN_DICT_C
HECK

_DISABLE_REBALA? :? disable space usage checks for storage reconfiguration
NCE_SPACE_CHECK

_DISABLE_RECOVE? :? Disable the read optimization during media recovery
RY_READ_SKIP

_DISABLE_ROLLIN? :? Disable Rolling Patch Feature
G_PATCH

_DISABLE_SAMPLE? :? disable row sampling IO optimization
_IO_OPTIM

_DISABLE_SAVEPO? :? disable the fix for bug 1402161
INT_RESET

_DISABLE_SELFTU? :? Disable self-tune checkpointing
NE_CHECKPOINTIN
G

_DISABLE_STORAG? :? Disable storage type checks
E_TYPE

_DISABLE_STREAM? :? streams diagnostics
S_DIAGNOSTICS

_DISABLE_STREAM? :? disable streams pool auto tuning
S_POOL_AUTO_TUN
ING

_DISABLE_SUN_RS? :? Disable IPC OSD support for Sun RSMAPI
M

_DISABLE_SYSTEM? :? disable system state dump
_STATE

_DISABLE_SYSTEM? :? Disable system state dump – wait samples
_STATE_WAIT_SAM
PLES

_DISABLE_TEMP_T? :? disable tablespace alerts for TEMPORARY tablespaces
ABLESPACE_ALERT
S

_DISABLE_THREAD? :? Disable thread internal disable feature
_INTERNAL_DISAB
LE

_DISABLE_THREAD? :? Thread snapshot
_SNAPSHOT

_DISABLE_TXN_AL? :? disable txn layer alert
ERT

_DISABLE_UNDO_T? :? disable tablespace alerts for UNDO tablespaces
ABLESPACE_ALERT
S

_DISABLE_WAIT_S? :? Disable wait state
TATE

_DISCRETE_TRANS? :? enable OLTP mode
ACTIONS_ENABLED

_DISKMON_PIPE_N? :? DiSKMon skgznp pipe name
AME

_DISK_SECTOR_SI? :? if TRUE,OSD sector size could be overridden
ZE_OVERRIDE

_DISPATCHER_RAT? :? scale to display rate statistic (100ths of a second)
E_SCALE

_DISPATCHER_RAT? :? time-to-live for rate statistic (100ths of a second)
E_TTL

_DISTINCT_VIEW_? :? enables unnesting of in subquery into distinct view
UNNESTING

_DISTRIBUTED_RE? :? number of seconds RECO holds outbound connections open
COVERY_CONNECTI
ON_HOLD_TIME

_DLMTRACE??????? :? Trace string of global enqueue type(s)
_DML_BATCH_ERRO? :? number or error handles allocated for DML in batch mode
R_LIMIT

_DML_FREQUENCY_? :? Control DML frequency tracking
TRACKING

_DML_FREQUENCY_? :? Control automatic advance and broadcast of DML
TRACKING_ADVANC???? frequencies
E

_DML_FREQUENCY_? :? Number of slots to use for DML frequency tracking
TRACKING_SLOTS

_DML_FREQUENCY_? :? Time length of each slot for DML frequency tracking
TRACKING_SLOT_T
IME

_DML_MONITORING? :? enable modification monitoring
_ENABLED

_DM_DMF_DETAILS? :? set dm dmf details compatibility version
_COMPATIBILITY

_DM_ENABLE_LEGA? :? revert dmf output types to pre-12.1.0.1
CY_DMF_OUTPUT_T
YPES

_DM_MAX_SHARED_? :? max percentage of the shared pool to use for a mining
POOL_PCT??????????? model

_DNFS_RDMA_ENAB? :? Enable dNFS RDMA transfers
LE

_DNFS_RDMA_MAX?? :? Maximum size of dNFS RDMA transfer
_DNFS_RDMA_MIN?? :? Minimum size of dNFS RDMA transfer
_DOMAIN_INDEX_B? :? maximum number of rows from one call to domain index
ATCH_SIZE?????????? fetch routine

_DOMAIN_INDEX_D? :? maximum number of rows for one call to domain index dml
ML_BATCH_SIZE?????? routines

_DRA_BMR_NUMBER? :? Maximum number of BMRs that can be done to a file
_THRESHOLD

_DRA_BMR_PERCEN? :? Maximum percentage of blocks in a file that can be
T_THRESHOLD???????? BMR-ed

_DRA_ENABLE_OFF? :? Enable the periodic creation of the offline dictionary
LINE_DICTIONARY???? for DRA

_DRM_PARALLEL_F? :? if TRUE enables parallel drm freeze
REEZE

_DROP_FLASHBACK? :? Drop logical operations enqueue immediately during
_LOGICAL_OPERAT???? flashback marker generation
IONS_ENQ

_DROP_STAT_SEGM? :? drop ilm statistics segment
ENT

_DROP_TABLE_GRA? :? drop_table_granule
NULE

_DROP_TABLE_OPT? :? reduce SGA memory use during drop of a partitioned
IMIZATION_ENABL???? table
ED

_DSC_FEATURE_LE? :? controls the feature level for deferred segment
VEL???????????????? creation

_DSKM_HEALTH_CH? :? DiSKMon health check counter
ECK_CNT

_DSS_CACHE_FLUS? :? enable full cache flush for parallel execution
H

_DS_ENABLE_AUTO? :? Dynamic Sampling Service Autonomous Transaction control
_TXN??????????????? parameter

_DS_IOCOUNT_IOS? :? Dynamic Sampling Service defaults: #IOs and IO Size
IZE

_DS_PARSE_MODEL? :? Dynamic Sampling Service Parse Model control parameter
_DTREE_AREA_SIZ? :? size of Decision Tree Classification work area
E

_DTREE_BINNING_? :? Decision Tree Binning Enabled
ENABLED

_DTREE_BINTEST_? :? Decision Tree Binning Test ID
ID

_DTREE_COMPRESS? :? Decision Tree Using Compressed Bitmaps Enabled
BMP_ENABLED

_DTREE_MAX_SURR? :? maximum number of surrogates
OGATES

_DTREE_PRUNING_? :? Decision Tree Pruning Enabled
ENABLED

_DUMMY_INSTANCE? :? dummy instance started by RMAN
_DUMP_10261_LEV? :? Dump level for event 10261,1=>minimal dump 2=>top pga
EL????????????????? dump

_DUMP_COMMON_SU? :? dump common subexpressions
BEXPRESSIONS

_DUMP_CONNECT_B? :? dump connect by loop error message into trc file
Y_LOOP_DATA

_DUMP_CURSOR_HE? :? dump comp/exec heap sizes to tryace file
AP_SIZES

_DUMP_INTERVAL_? :? trace dump time interval limit (in seconds)
LIMIT

_DUMP_MAX_LIMIT? :? max number of dump within dump interval
_DUMP_QBC_TREE?? :? dump top level query parse tree to trace
_DUMP_RCVR_IPC?? :? if TRUE enables IPC dump at instance eviction time
_DUMP_SCN_INCRE? :? Dumps scn increment stack per session
MENT_STACK

_DUMP_SYSTEM_ST? :? scope of sysstate dump during instance termination
ATE_SCOPE

_DUMP_TRACE_SCO? :? scope of trace dump during a process crash
PE

_DYNAMIC_RLS_PO? :? rls policies are dynamic
LICIES

_DYNAMIC_STATS_? :? delay threshold (in seconds) between sending statistics
THRESHOLD?????????? messages

_EIGHTEENTH_SPA? :? eighteenth spare parameter – string
RE_PARAMETER

_EIGHTH_SPARE_P? :? eighth spare parameter – integer
ARAMETER

_ELEVENTH_SPARE? :? eleventh spare parameter – integer
_PARAMETER

_ELIMINATE_COMM? :? enables elimination of common sub-expressions
ON_SUBEXPR

_EMON_MAX_ACTIV? :? maximum open connections to clients per emon
E_CONNECTIONS

_EMON_OUTBOUND_? :? timeout for completing connection set up to clients
CONNECT_TIMEOUT

_EMON_POOL_INC?? :? increment in EMON slaves per pool type
_EMON_POOL_MAX?? :? maximum number of EMON slaves per pool type
_EMON_POOL_MIN?? :? minimum number of EMON slaves per pool type
_EMON_REGULAR_N? :? number of EMON slaves doing regular database
TFN_SLAVES????????? notifications

_EMON_SEND_TIME? :? send timeout after which the client is unregistered
OUT

_EMX_CONTROL???? :? EM Express control (internal use only)
_EMX_MAX_SESSIO? :? Maximum number of sessions in the EM Express cache
NS

_EMX_SESSION_TI? :? Session timeout (sec) in the EM Express cache
MEOUT

_ENABLE_12G_BFT? :? enable 12g bigfile tablespace
_ENABLE_ASYNCVI? :? enable asynch vectored I/O
O

_ENABLE_AUTOMAT? :? if 1,Automated Maintenance Is Enabled
IC_MAINTENANCE

_ENABLE_AUTOMAT? :? Automatic SQL Tuning Advisory enabled parameter
IC_SQLTUNE

_ENABLE_BLOCK_L? :? enable block level recovery
EVEL_TRANSACTIO
N_RECOVERY

_ENABLE_CHECK_T? :? enable checking of corruption caused by canceled
RUNCATE???????????? truncate

_ENABLE_COLUMNA? :? Enable Columnar Flash Cache Rewrite
R_CACHE

_ENABLE_CSCN_CA? :? enable commit SCN caching for all transactions
CHING

_ENABLE_DDL_WAI? :? use this to turn off ddls with wait semantics
T_LOCK

_ENABLE_DEFAULT? :? enable default implementation of hard affinity osds
_AFFINITY

_ENABLE_DEFAULT? :? Enable Default Tablespace Utilization Threshold for
_TEMP_THRESHOLD???? UNDO Tablespaces

_ENABLE_DEFAULT? :? Enable Default Tablespace Utilization Threshold for
_UNDO_THRESHOLD???? TEMPORARY Tablespaces

_ENABLE_DML_LOC? :? enable dml lock escalation against partitioned tables
K_ESCALATION??????? if TRUE

_ENABLE_EDITION? :? enable editions for all users
S_FOR_USERS

_ENABLE_EXCHANG? :? use check constraints on the table for validation
E_VALIDATION_US
ING_CHECK

_ENABLE_FAST_RE? :? enable fast refresh after move tablespace
F_AFTER_MV_TBS

_ENABLE_FFW????? :? FAL FORWARDING
_ENABLE_FLASH_L? :? Enable Exadata Smart Flash Logging
OGGING

_ENABLE_FRONT_E? :? enable front end view optimization
ND_VIEW_OPTIMIZ
ATION

_ENABLE_HASH_OV? :? TRUE – enable hash cluster overflow based on SIZE
ERFLOW

_ENABLE_HEATMAP? :? heatmap related – to be used by oracle dev only
_INTERNAL

_ENABLE_HWM_SYN? :? enable HWM synchronization
C

_ENABLE_IEE_STA? :? enables IEE stats gathering
TS

_ENABLE_ILM_FLU? :? Enable ILM Stats Flush
SH_STATS

_ENABLE_ILM_TES? :? Enable Test ILM Stats Flush
TFLUSH_STATS

_ENABLE_KQF_PUR? :? Enable KQF fixed runtime table purge
GE

_ENABLE_LGPG_DE? :? Enable LGPG debug mode
BUG

_ENABLE_LIST_IO? :? Enable List I/O
_ENABLE_MIDTIER? :? enable midtier affinity metrics processing
_AFFINITY

_ENABLE_MINSCN_? :? enable/disable minscn optimization for CR
CR

_ENABLE_NATIVEN? :? Enable skgxp driver usage for native net
ET_TCPIP

_ENABLE_NUMA_IN? :? Enable NUMA interleave mode
TERLEAVE

_ENABLE_NUMA_OP? :? Enable NUMA specific optimizations
TIMIZATION

_ENABLE_NUMA_SU? :? Enable NUMA support and optimizations
PPORT

_ENABLE_OBJ_QUE? :? enable object queues
UES

_ENABLE_OFFLOAD? :? Enable offloaded writes for Unit Test
ED_WRITES

_ENABLE_ONLINE_? :? Allow online index creation algorithm without S DML
INDEX_WITHOUT_S???? lock
_LOCKING

_ENABLE_PLUGGAB? :? Enable Pluggable Database
LE_DATABASE

_ENABLE_QUERY_R? :? mv rewrite on remote table/view
EWRITE_ON_REMOT
E_OBJS

_ENABLE_REDO_GL? :? LGWR post globally on write
OBAL_POST

_ENABLE_REFRESH? :? enable or disable MV refresh scheduling (revert to 9.2
_SCHEDULE?????????? behavior)

_ENABLE_RELIABL? :? Enable reliable latch waits
E_LATCH_WAITS

_ENABLE_RENAME_? :? enable RENAME-clause using ALTER USER statement
USER

_ENABLE_RLB????? :? enable RLB metrics processing
_ENABLE_ROW_SHI? :? use the row shipping optimization for wide table
PPING?????????????? selects

_ENABLE_SB_DETE? :? Split Brain Detection
CTION

_ENABLE_SCHEMA_? :? enable DDL operations (e.g. creation) involving schema
SYNONYMS??????????? synonyms

_ENABLE_SCN_WAI? :? use this to turn off scn wait interface in kta
T_INTERFACE

_ENABLE_SECUREF? :? Enable securefile flashback optimization
ILE_FLASHBACK_O
PT

_ENABLE_SEPARAB? :? enable/disable separable transactions
LE_TRANSACTIONS

_ENABLE_SHARED_? :? temporary to disable/enable kgh policy
POOL_DURATIONS

_ENABLE_SHARED_? :? Enable shared server vector I/O
SERVER_VECTOR_I
O

_ENABLE_SPACEBG? :? enable space management background task
_ENABLE_SPACE_P? :? enable space pre-allocation
REALLOCATION

_ENABLE_TABLESP? :? enable tablespace alerts
ACE_ALERTS

_ENABLE_TYPE_DE? :? enable type dependent selectivity estimates
P_SELECTIVITY

_ENDPROT_CHUNK_? :? chunk comment for selective overrun protection
COMMENT

_ENDPROT_HEAP_C? :? heap comment for selective overrun protection
OMMENT

_ENDPROT_SUBHEA? :? selective overrun protection for subeheaps
PS

_ENQUEUE_DEADLO? :? enable deadlock detection on all global enqueues
CK_DETECT_ALL_G
LOBAL_LOCKS

_ENQUEUE_DEADLO? :? deadlock scan interval
CK_SCAN_SECS

_ENQUEUE_DEADLO? :? requests with timeout <= this will not have deadlock
CK_TIME_SEC???????? detection

_ENQUEUE_DEBUG_? :? debug enqueue multi instance
MULTI_INSTANCE

_ENQUEUE_HASH??? :? enqueue hash table length
_ENQUEUE_HASH_C? :? enqueue hash chain latches
HAIN_LATCHES

_ENQUEUE_LOCKS?? :? locks for managed enqueues
_ENQUEUE_PARANO? :? enable enqueue layer advanced debugging checks
IA_MODE_ENABLED

_ENQUEUE_RESOUR? :? resources for enqueues
CES

_ENQUEUE_SYNC_R? :? max number of times the bg process to retry synchronous
ETRY_ATTEMPTS?????? enqueue open if it failed because master could not
allocate memory

_ENQUEUE_SYNC_S? :? simulate master instance running out of memory when
IM_MEM_ERROR??????? synchronously getting a remotely mastered enqueue

_EVOLVE_PLAN_BA? :? Level of detail to show in plan verification/evolution
SELINE_REPORT_L???? report
EVEL

_EVT_SYSTEM_EVE? :? disable system event propagation
NT_PROPAGATION

_EXPAND_AGGREGA? :? expand aggregates
TES

_EXPLAIN_REWRIT? :? allow additional messages to be generated during
E_MODE????????????? explain rewrite

_EXTENDED_PRUNI? :? do runtime pruning in iterator if set to TRUE
NG_ENABLED

_EXTERNAL_SCN_L? :? High delta SCN threshold in seconds
OGGING_THRESHOL
D_SECONDS

_EXTERNAL_SCN_R? :? external SCN rejection delta threshold in minutes
EJECTION_DELTA_
THRESHOLD_MINUT
ES

_EXTERNAL_SCN_R? :? Lag in hours between max allowed SCN and an external
EJECTION_THRESH???? SCN
OLD_HOURS

_FAIRNESS_THRES? :? number of times to CR serve before downgrading lock
HOLD

_FAIR_REMOTE_CV? :? if TRUE enables fair remote convert
T

_FASTPIN_ENABLE? :? enable reference count based fast pins
_FAST_CURSOR_RE? :? use more memory in order to get faster execution
EXECUTE

_FAST_DUAL_ENAB? :? enable/disable fast dual
LED

_FAST_FULL_SCAN? :? enable/disable index fast full scan
_ENABLED

_FAST_INDEX_MAI? :? fast global index maintenance during PMOPs
NTENANCE

_FAST_PSBY_CONV? :? Enable fast physical standby conversion
ERSION

_FBDA_BUSY_PERC? :? flashback archiver busy percentage
ENTAGE

_FBDA_DEBUG_ASS? :? flashback archiver debug assert for testing
ERT

_FBDA_DEBUG_MOD? :? flashback archiver debug event for testing
E

_FBDA_GLOBAL_BS? :? flashback archiver global barrier scn lag
CN_LAG

_FBDA_INLINE_PE? :? flashback archiver inline percentage
RCENTAGE

_FBDA_RAC_INACT? :? flashback archiver rac inactive limit
IVE_LIMIT

_FG_IORM_SLAVES? :? ForeGround I/O slaves for IORM
_FG_LOG_CHECKSU? :? Checksum redo in foreground process
M

_FG_SYNC_SLEEP_? :? Log file sync via usleep
USECS

_FIC_ALGORITHM_? :? Set Frequent Itemset Counting Algorithm
SET

_FIC_AREA_SIZE?? :? size of Frequent Itemset Counting work area
_FIC_MAX_LENGTH? :? Frequent Itemset Counting Maximum Itemset Length
_FIC_MIN_BMSIZE? :? Frequent Itemset Counting Minimum BITMAP Size
_FIC_OUTOFMEM_C? :? Frequent Itemset Counting Out Of Memory Candidates
ANDIDATES?????????? Generation

_FIFTEENTH_SPAR? :? fifteenth spare parameter – integer
E_PARAMETER

_FIFTH_SPARE_PA? :? fifth spare parameter – integer
RAMETER

_FILEMAP_DIR???? :? FILEMAP directory
_FILE_SIZE_INCR? :? Amount of file size increase increment,in bytes
EASE_INCREMENT

_FIRST_K_ROWS_D? :? enable the use of dynamic proration of join
YNAMIC_PRORATIO???? cardinalities
N

_FIRST_SPARE_PA? :? first spare parameter – integer
RAMETER

_FIX_CONTROL???? :? bug fix control parameter
_FLASHBACK_11.1? :? use 11.1 flashback block new optimization scheme
_BLOCK_NEW_OPT

_FLASHBACK_ALLO? :? Allow enabling flashback on noarchivelog database
W_NOARCHIVELOG

_FLASHBACK_ARCH? :? flashback archiver table partition size
IVER_PARTITION_
SIZE

_FLASHBACK_BARR? :? Flashback barrier interval in seconds
IER_INTERVAL

_FLASHBACK_COPY? :? Number of flashback copy latches
_LATCHES

_FLASHBACK_DATA? :? Run Flashback Database in test mode
BASE_TEST_ONLY

_FLASHBACK_DELE? :? Amount of flashback log (in MB) to delete in one
TE_CHUNK_MB???????? attempt

_FLASHBACK_DYNA? :? enable flashback enable code path
MIC_ENABLE

_FLASHBACK_DYNA? :? Simulate failures during dynamic enable
MIC_ENABLE_FAIL
URE

_FLASHBACK_ENAB? :? Flashback enable read ahead
LE_RA

_FLASHBACK_FORM? :? Chunk mega-bytes for formatting flashback logs using
AT_CHUNK_MB???????? sync write

_FLASHBACK_FORM? :? Chunk mega-bytes for formatting flashback logs using
AT_CHUNK_MB_DWR???? delayed write
ITE

_FLASHBACK_FUZZ? :? Use flashback fuzzy barrier
Y_BARRIER

_FLASHBACK_GENE? :? flashback generation buffer size
RATION_BUFFER_S
IZE

_FLASHBACK_HINT? :? Flashback hint barrier percent
_BARRIER_PERCEN
T

_FLASHBACK_LOGF? :? flashback logfile enqueue timeout for opens
ILE_ENQUEUE_TIM
EOUT

_FLASHBACK_LOG_? :? Specify Flashback log I/O error behavior
IO_ERROR_BEHAVI
OR

_FLASHBACK_LOG_? :? Minimum flashback log size
MIN_SIZE

_FLASHBACK_LOG_? :? flashback log rac balance factor
RAC_BALANCE_FAC
TOR

_FLASHBACK_LOG_? :? Flashback log size
SIZE

_FLASHBACK_MARK? :? Enable flashback database marker cache
ER_CACHE_ENABLE
D

_FLASHBACK_MARK? :? Size of flashback database marker cache
ER_CACHE_SIZE

_FLASHBACK_MAX_? :? Maximum flashback log size in bytes (OS limit)
LOG_SIZE

_FLASHBACK_MAX_? :? Maximum number of flashback logs per flashback thread
N_LOG_PER_THREA
D

_FLASHBACK_MAX_? :? Maximum time span between standby recovery sync for
STANDBY_SYNC_SP???? flashback
AN

_FLASHBACK_N_LO? :? Desired number of flashback logs per flashback thread
G_PER_THREAD

_FLASHBACK_PREP? :? Prepare Flashback logs in the background
ARE_LOG

_FLASHBACK_SIZE? :? Size new flashback logs based on average redo log size
_BASED_ON_REDO

_FLASHBACK_STAN? :? Flashback standby barrier interval in seconds
DBY_BARRIER_INT
ERVAL

_FLASHBACK_VALI? :? validate flashback pointers in controlfile for 11.2.0.2
DATE_CONTROLFIL???? database
E

_FLASHBACK_VERB? :? Print verbose information about flashback database
OSE_INFO

_FLASHBACK_WRIT? :? Flashback writer loop limit before it returns
E_MAX_LOOP_LIMI
T

_FLUSH_ILM_STAT? :? flush ilm stats
S

_FLUSH_PLAN_IN_? :? Plan is being flushed from an AWR flush SQL
AWR_SQL

_FLUSH_REDO_TO_? :? Flush redo to standby test event parameter
STANDBY

_FLUSH_UNDO_AFT? :? if TRUE,flush undo buffers after TX recovery
ER_TX_RECOVERY

_FORCE_ARCH_COM? :? Archive Compress all newly created compressed tables
PRESS

_FORCE_DATEFOLD? :? force use of trunc for datefolding rewrite
_TRUNC

_FORCE_HASH_JOI? :? force hash join to spill to disk
N_SPILL

_FORCE_HSC_COMP? :? compress all newly created tables
RESS

_FORCE_LOGGING_? :? force logging during upgrade mode
IN_UPGRADE

_FORCE_OLTP_COM? :? OLTP Compress all newly created compressed tables
PRESS

_FORCE_OLTP_UPD? :? OLTP Compressed row optimization on update
ATE_OPT

_FORCE_RCV_INFO? :? Force recovery info ping to stdby
_PING

_FORCE_REWRITE_? :? control new query rewrite features
ENABLE

_FORCE_SLAVE_MA? :? Force slave mapping for intra partition loads
PPING_INTRA_PAR
T_LOADS

_FORCE_SYS_COMP? :? Sys compress
RESS

_FORCE_TEMPTABL? :? executes concatenation of rollups using temp tables
ES_FOR_GSETS

_FORCE_TMP_SEGM? :? Force tmp segment loads
ENT_LOADS

_FORWARDED_2PC_? :? auto-tune threshold for two-phase commit rate across
THRESHOLD?????????? RAC instances

_FOURTEENTH_SPA? :? fourteenth spare parameter – integer
RE_PARAMETER

_FOURTH_SPARE_P? :? fourth spare parameter – integer
ARAMETER

_FRAME_CACHE_TI? :? number of seconds a cached frame page stay in cache.
ME

_FULL_DIAG_ON_R? :? rim nodes have full DIA* function
IM

_FULL_PWISE_JOI? :? enable full partition-wise join when TRUE
N_ENABLED

_FUSION_SECURIT? :? Fusion Security
Y

_GBY_HASH_AGGRE? :? enable group-by and aggregation using hash scheme
GATION_ENABLED

_GBY_ONEKEY_ENA? :? enable use of one comparison of all group by keys
BLED

_GCR_CPU_MIN_FR? :? minimum amount of free CPU to flag an anomaly
EE

_GCR_ENABLE_HIG? :? if TRUE,GCR may kill foregrounds under high load
H_CPU_KILL

_GCR_ENABLE_HIG? :? if TRUE,GCR may enable a RM plan under high load
H_CPU_RM

_GCR_ENABLE_HIG? :? if TRUE,GCR may boost bg priority under high load
H_CPU_RT

_GCR_ENABLE_HIG? :? if TRUE,GCR may kill foregrounds under high memory
H_MEMORY_KILL?????? load

_GCR_ENABLE_NEW? :? if FALSE,revert to old drm load metric
_DRM_CHECK

_GCR_ENABLE_STA? :? if FALSE,revert to old cpu load metric
TISTICAL_CPU_CH
ECK

_GCR_HIGH_CPU_T? :? minimum amount of CPU process must consume to be kill
HRESHOLD??????????? target

_GCR_HIGH_MEMOR? :? minimum amount of Memory process must consume to be
Y_THRESHOLD???????? kill target

_GCR_MAX_RT_PRO? :? maximum number of RT DLM processes allowed by GCR
CS

_GCR_MEM_MIN_FR? :? minimum amount of free memory to flag an anomaly
EE

_GCR_USE_CSS???? :? if FALSE,GCR wont register with CSS nor use any CSS
feature

_GCS_DISABLE_RE? :? disable remote client/shadow handles
MOTE_HANDLES

_GCS_DISABLE_SK? :? if TRUE,disable skip close optimization in remastering
IP_CLOSE_REMAST
ERING

_GCS_DISABLE_SW? :? if TRUE,disable switching to local role with a writer
ITCH_ROLE_WITH_
WRITER

_GCS_FAST_RECON? :? if TRUE,enable fast reconfiguration for gcs locks
FIG

_GCS_LATCHES???? :? number of gcs resource hash latches to be allocated per
LMS process

_GCS_MIN_SLAVES? :? if non zero,it enables the minimum number of gcs
slaves

_GCS_PKEY_HISTO? :? number of pkey remastering history
RY

_GCS_PROCESS_IN? :? if TRUE,process gcs requests during instance recovery
_RECOVERY

_GCS_RESERVED_R? :? allocate the number of reserved resources in
ESOURCES??????????? reconfiguration

_GCS_RESERVED_S? :? allocate the number of reserved shadows in
HADOWS????????????? reconfiguration

_GCS_RESOURCES?? :? number of gcs resources to be allocated
_GCS_RES_HASH_B? :? number of gcs resource hash buckets to be allocated
UCKETS

_GCS_RES_PER_BU? :? number of gcs resource per hash bucket
CKET

_GCS_SHADOW_LOC? :? number of pcm shadow locks to be allocated
KS

_GCS_TESTING???? :? GCS testing parameter
_GC_AFFINITY_AC? :? if TRUE,save the time we acquired an affinity lock
QUIRE_TIME

_GC_AFFINITY_LO? :? if TRUE,enable object affinity
CKING

_GC_AFFINITY_LO? :? if TRUE,get affinity locks
CKS

_GC_AFFINITY_RA? :? dynamic object affinity ratio
TIO

_GC_ASYNC_SEND?? :? send blocks asynchronously
_GC_BYPASS_READ? :? if TRUE,modifications bypass readers
ERS

_GC_CHECK_BSCN?? :? if TRUE,check for stale blocks
_GC_COALESCE_RE? :? if TRUE,coalesce recovery reads
COVERY_READS

_GC_CPU_TIME???? :? if TRUE,record the gc cpu time
_GC_CR_SERVER_R? :? if TRUE,cr server waits for a read to complete
EAD_WAIT

_GC_DEFER_PING_? :? if TRUE,restrict deferred ping to index blocks only
INDEX_ONLY

_GC_DEFER_TIME?? :? how long to defer pings for hot buffers in milliseconds
_GC_DELTA_PUSH_? :? if delta >= K bytes,compress before push
COMPRESSION

_GC_DELTA_PUSH_? :? max delta level for delta push
MAX_LEVEL

_GC_DELTA_PUSH_? :? objects which use delta push
OBJECTS

_GC_DISABLE_S_L? :? if TRUE,disable S lock BRR ping check for lost write
OCK_BRR_PING_CH???? protect
ECK

_GC_DOWN_CONVER? :? if TRUE,down-convert lock after recovery
T_AFTER_KEEP

_GC_ELEMENT_PER? :? global cache element percent
CENT

_GC_ESCALATE_BI? :? if TRUE,escalates create a bid
D

_GC_FG_MERGE???? :? if TRUE,merge pi buffers in the foreground
_GC_FG_SPIN_TIM? :? foreground msgq spin time
E

_GC_FLUSH_DURIN? :? if TRUE,flush during affinity
G_AFFINITY

_GC_FUSION_COMP? :? compress fusion blocks if there is free space
RESSION

_GC_GLOBAL_CHEC? :? if TRUE,enable global checkpoint scn
KPOINT_SCN

_GC_GLOBAL_CPU?? :? global cpu checks
_GC_GLOBAL_LRU?? :? turn global lru off,or turn it on
_GC_GLOBAL_LRU_? :? global lru touch count
TOUCH_COUNT

_GC_GLOBAL_LRU_? :? global lru touch time in seconds
TOUCH_TIME

_GC_INTEGRITY_C? :? set the integrity check level
HECKS

_GC_KEEP_RECOVE? :? if TRUE,make single instance crash recovery buffers
RY_BUFFERS????????? current

_GC_LATCHES????? :? number of latches per LMS process
_GC_LOG_FLUSH??? :? if TRUE,flush redo log before a current block transfer
_GC_LONG_QUERY_? :? threshold for long running query
THRESHOLD

_GC_MAXIMUM_BID? :? maximum number of bids which can be prepared
S

_GC_MAX_DOWNCVT? :? maximum downconverts to process at one time
_GC_NO_FAIRNESS? :? if TRUE,no fairness if we serve a clone
_FOR_CLONES

_GC_OBJECT_QUEU? :? maximum length for an object queue
E_MAX_LENGTH

_GC_OVERRIDE_FO? :? if TRUE,try to override force-cr requests
RCE_CR

_GC_PERSISTENT_? :? if TRUE,enable persistent read-mostly locking
READ_MOSTLY

_GC_POLICY_MINI? :? dynamic object policy minimum activity per minute
MUM

_GC_POLICY_TIME? :? how often to make object policy decisions in minutes
_GC_READ_MOSTLY? :? if TRUE,optimize flushes for read mostly objects
_FLUSH_CHECK

_GC_READ_MOSTLY? :? if TRUE,enable read-mostly locking
_LOCKING

_GC_SANITY_CHEC? :? if TRUE,sanity check CR buffers
K_CR_BUFFERS

_GC_SAVE_CLEANO? :? if TRUE,save cleanout to apply later
UT

_GC_SPLIT_FLUSH? :? if TRUE,flush index split redo before rejecting bast
_GC_STATISTICS?? :? if TRUE,kcl statistics are maintained
_GC_TEMP_AFFINI? :? if TRUE,enable global temporary affinity
TY

_GC_TRANSFER_RA? :? dynamic object read-mostly transfer ratio
TIO

_GC_UNDO_AFFINI? :? if TRUE,enable undo affinity
TY

_GC_UNDO_BLOCK_? :? if TRUE,enable undo block disk reads
DISK_READS

_GC_VECTOR_READ? :? if TRUE,vector read current buffers
_GENERALIZED_PR? :? controls extensions to partition pruning for general
UNING_ENABLED?????? predicates

_GES_DD_DEBUG??? :? if 1 or higher enables GES deadlock detection debug
diagnostics

_GES_DEFAULT_LM? :? default lmds for enqueue hashing
DS

_GES_DESIGNATED? :? designated master for GES and GCS resources
_MASTER

_GES_DIAGNOSTIC? :? if TRUE enables GES diagnostics
S

_GES_DIAGNOSTIC? :? systemstate level on global enqueue diagnostics blocked
S_ASM_DUMP_LEVE???? by ASM
L

_GES_DIRECT_FRE? :? if TRUE,free each resource directly to the freelist
E

_GES_DIRECT_FRE? :? string of resource types(s) to directly free to the
E_RES_TYPE????????? freelist

_GES_DUMP_OPEN_? :? if TRUE,dump open locks for the LCK process during
LOCKS?????????????? shutdown

_GES_FGGL??????? :? DLM fg grant lock on/off
_GES_FREEABLE_R? :? if TRUE,free dynamic resource chunks which are
ES_CHUNK_FREE?????? freeable

_GES_FREEABLE_R? :? time interval for freeing freeable dynamic resource
ES_CHUNK_FREE_I???? chunks
NTERVAL

_GES_GATHER_RES? :? if TRUE,gather resource reuse statistics
_REUSE_STATS

_GES_HASH_GROUP? :? enqueue hash table groups
S

_GES_HEALTH_CHE? :? if greater than 0 enables GES system health check
CK

_GES_LMD_MAPPIN? :? enqueue to lmd mapping
G

_GES_NRES_DIVID? :? how to divide number of enqueue resources among hash
E?????????????????? tables

_GES_NUM_BLOCKE? :? number of blockers to be killed for hang resolution
RS_TO_KILL

_GES_RESOURCE_M? :? enable different level of ges res memory optimization
EMORY_OPT

_GES_SERVER_PRO? :? number of background global enqueue server processes
CESSES

_GLOBALINDEX_PN? :? enables filter for global index with partition extended
UM_FILTER_ENABL???? syntax
ED

_GLOBAL_HANG_AN? :? the interval at which global hang analysis is run
ALYSIS_INTERVAL
_SECS

_GRANT_SECURE_R? :? Disallow granting of SR to NSR
OLE

_GROUPBY_NOPUSH? :? groupby nopushdown cut ratio
DOWN_CUT_RATIO

_GROUPBY_ORDERB? :? groupby/orderby don’t combine threshold
Y_COMBINE

_GSM???????????? :? GSM descriptions
_GSM_CONFIG_VER? :? version of gsm config
S

_GSM_CPU_THRESH? :? CPU busy threshold
_GSM_DRV_INTERV? :? metric derived values interval
AL

_GSM_MAX_INSTAN? :? maximum number of instances per database in gsm cloud
CES_PER_DB

_GSM_MAX_NUM_RE? :? maximum number of regions in gsm cloud
GIONS

_GSM_REGION_LIS? :? List of GSM Regions
T

_GSM_SRLAT_THRE? :? Single block read latency threshold
SH

_GSM_THRESH_RES? :? threshold resource percentage
PCT

_GSM_THRESH_ZON? :? threshold zone
E

_GS_ANTI_SEMI_J? :? enable anti/semi join for the GS query
OIN_ALLOWED

_GWM_SPARE1????? :? gsm spare 1
_GWM_SPARE2????? :? gsm spare 2
_GWM_SPARE3????? :? gsm spare 3
_HANG_ANALYSIS_? :? hang analysis num call stacks
NUM_CALL_STACKS

_HANG_BASE_FILE? :? Number of trace files for the normal base trace file
_COUNT

_HANG_BASE_FILE? :? File space limit for current normal base trace file
_SPACE_LIMIT

_HANG_BOOL_SPAR? :? Hang Management 1
E1

_HANG_CROSS_BOU? :? Hang Management Cross Boundary detection
NDARY_HANG_DETE
CTION_ENABLED

_HANG_DELAY_RES? :? Hang Management delays hang resolution for library
OLUTION_FOR_LIB???? cache
CACHE

_HANG_DETECTION? :? Hang Management detection
_ENABLED

_HANG_DETECTION? :? Hang Management detection interval in seconds
_INTERVAL

_HANG_HANG_ANAL? :? if TRUE hang manager outputs hang analysis hang chains
YZE_OUTPUT_HANG
_CHAINS

_HANG_HILOAD_PR? :? Hang Management high load or promoted ignored hang
OMOTED_IGNORED_???? count
HANG_COUNT

_HANG_HIPRIOR_S? :? Hang Management high priority session attribute list
ESSION_ATTRIBUT
E_LIST

_HANG_IGNORED_H? :? Time in seconds ignored hangs must persist after
ANGS_INTERVAL?????? verification

_HANG_IGNORED_H? :? Hang Management ignored hang count
ANG_COUNT

_HANG_INT_SPARE? :? Hang Management 2
2

_HANG_LOG_VERIF? :? Hang Management log verified hangs to alert log
IED_HANGS_TO_AL
ERT

_HANG_LONG_WAIT? :? Long session wait time threshold in seconds
_TIME_THRESHOLD

_HANG_LWS_FILE_? :? Number of trace files for long waiting sessions
COUNT

_HANG_LWS_FILE_? :? File space limit for current long waiting session trace
SPACE_LIMIT???????? file

_HANG_MONITOR_A? :? Time in seconds ignored hangs must persist after
RCHIVING_RELATE???? verification
D_HANG_INTERVAL

_HANG_MSG_CHECK? :? enable hang graph message checksum
SUM_ENABLED

_HANG_RESOLUTIO? :? Hang Management hang resolution allow archiving issue
N_ALLOW_ARCHIVI???? termination
NG_ISSUE_TERMIN
ATION

_HANG_RESOLUTIO? :? Hang Management hang resolution confidence promotion
N_CONFIDENCE_PR
OMOTION

_HANG_RESOLUTIO? :? Hang Management hang resolution global hang confidence
N_GLOBAL_HANG_C???? promotion
ONFIDENCE_PROMO
TION

_HANG_RESOLUTIO? :? Hang Management hang resolution policy
N_POLICY

_HANG_RESOLUTIO? :? Hang Management hang resolution promote process
N_PROMOTE_PROCE???? termination
SS_TERMINATION

_HANG_RESOLUTIO? :? Hang Management hang resolution scope
N_SCOPE

_HANG_SIGNATURE? :? Hang Signature List matched output frequency
_LIST_MATCH_OUT
PUT_FREQUENCY

_HANG_STATISTIC? :? Hang Management statistics collection interval in
S_COLLECTION_IN???? seconds
TERVAL

_HANG_STATISTIC? :? Hang Management statistics collection moving average
S_COLLECTION_MA???? alpha
_ALPHA

_HANG_STATISTIC? :? Hang Management statistics high IO percentage threshold
S_HIGH_IO_PERCE
NTAGE_THRESHOLD

_HANG_TERMINATE? :? Hang Management terminates sessions allowing replay
_SESSION_REPLAY
_ENABLED

_HANG_VERIFICAT? :? Hang Management verification interval in seconds
ION_INTERVAL

_HARD_PROTECTIO? :? if TRUE enable H.A.R.D specific format changes
N

_HASHOPS_PREFET? :? maximum no of rows whose relevant memory locations are
CH_SIZE???????????? prefetched

_HASH_JOIN_ENAB? :? enable/disable hash join
LED

_HASH_MULTIBLOC? :? number of blocks hash join will read/write at once
K_IO_COUNT

_HB_REDO_MSG_IN? :? BOC HB redo message interval in ms
TERVAL

_HEATMAP_FORMAT? :? heatmap related – to be used by oracle dev only
_1BLOCK

_HEATMAP_MIN_MA? :? Internal testing only
XSIZE

_HEUR_DEADLOCK_? :? the heuristic wait time per node for deadlock
RESOLUTION_SECS???? resolution

_HIGHRES_DRIFT_? :? allowed highres timer drift for VKTM
ALLOWED_SEC

_HIGHTHRESHOLD_? :? high threshold undo_retention in seconds
UNDORETENTION

_HIGH_PRIORITY_? :? High Priority Process Name Mask
PROCESSES

_HIGH_SERVER_TH? :? high server thresholds
RESHOLD

_HJ_BIT_FILTER_? :? hash-join bit filtering threshold (0 always enabled)
THRESHOLD

_HM_ANALYSIS_OR? :? the oradebug system state level for hang manager hang
ADEBUG_SYS_DUMP???? analysis
_LEVEL

_HM_XM_ENABLED?? :? If TRUE,DIA0 allows message exchanges across DB/ASM
boundary

_HWM_SYNC_THRES? :? HWM synchronization threshold in percentage
HOLD

_IDLE_SESSION_K? :? enables or disables resource manager session idle limit
ILL_ENABLED???????? checks

_IDL_CONVENTION? :? enable conventional index maintenance for insert direct
AL_INDEX_MAINTE???? load
NANCE

_IDXRB_ROWINCR?? :? proportionality constant for dop vs. rows in index
rebuild

_IGNORE_DESC_IN? :? ignore DESC in indexes,sort those columns ascending
_INDEX????????????? anyhow

_IGNORE_EDITION? :? ignore schema’s edition-enabled status during EV
_ENABLED_FOR_EV???? creation
_CREATION

_IGNORE_FG_DEPS? :? ignore fine-grain dependencies during invalidation
_ILMFLUSH_STAT_? :? ILM flush statistics limit – Internal testing only
LIMIT

_ILMSET_STAT_LI? :? ILM set statistics limit – Internal testing only
MIT

_ILMSTAT_MEMLIM? :? Percentage of shared pool for use by ILM Statistics
IT

_ILM_FILTER_TIM? :? Upper filter time for ILM block compression
E

_ILM_FILTER_TIM? :? Lower filter time for ILM block compression
E_LOWER

_ILM_MEM_LIMIT?? :? percentage of the max shared pool heat-map can use –
internal

_ILM_POLICY_NAM? :? User specified ILM policy name
E

_IMAGE_REDO_GEN? :? Image redo generation delay in centi-seconds (direct
_DELAY????????????? write mode)

_IMMEDIATE_COMM? :? if TRUE,propagate commit SCN immediately
IT_PROPAGATION

_IMPROVED_OUTER? :? improved outer-join cardinality calculation
JOIN_CARD

_IMPROVED_ROW_L? :? enable the improvements for computing the average row
ENGTH_ENABLED?????? length

_IMR_ACTIVE????? :? Activate Instance Membership Recovery feature
_IMR_AVOID_DOUB? :? Avoid device voting for CSS reconfig during IMR
LE_VOTING

_IMR_CONTROLFIL? :? IMR controlfile access wait time in seconds
E_ACCESS_WAIT_T
IME

_IMR_DEVICE_TYP? :? Type of device to be used by IMR
E

_IMR_DISKVOTE_I? :? IMR disk voting implementation method
MPLEMENTATION

_IMR_DISK_VOTIN? :? Maximum wait for IMR disk voting (seconds)
G_INTERVAL

_IMR_EVICTED_ME? :? IMR issue evicted member kill after a wait
MBER_KILL

_IMR_EVICTED_ME? :? IMR evicted member kill wait time in seconds
MBER_KILL_WAIT

_IMR_EXTRA_RECO? :? Extra reconfiguration wait in seconds
NFIG_WAIT

_IMR_HIGHLOAD_T? :? IMR system highload threshold
HRESHOLD

_IMR_MAX_RECONF? :? Maximum Reconfiguration delay (seconds)
IG_DELAY

_IMR_RR_HOLDER_? :? IMR max time instance is allowed to hold RR lock in
KILL_TIME?????????? seconds

_IMR_SPLITBRAIN? :? Maximum wait for split-brain resolution (seconds)
_RES_WAIT

_IMR_SYSTEMLOAD? :? Perform the system load check during IMR
_CHECK

_IMU_POOLS?????? :? in memory undo pools
_INCREMENTAL_RE? :? minimum number of writes for incremental recovery ckpt
COVERY_CKPT_MIN???? every second
_BATCH

_INDEX_JOIN_ENA? :? enable the use of index joins
BLED

_INDEX_LOAD_BUF? :? index load buf oltp sacrifice pct
_OLTP_SACRIFICE
_PCT

_INDEX_LOAD_BUF? :? index load buf and comp oltp under-estimation pct
_OLTP_UNDER_PCT

_INDEX_MAX_INC_? :? max itl expand percentage soft limit during index
TRANS_PCT?????????? insert

_INDEX_PARTITIO? :? Enables large extent allocation for partitioned indices
N_LARGE_EXTENTS

_INDEX_PREFETCH? :? index prefetching factor
_FACTOR

_INDEX_SCAN_CHE? :? check and skip corrupt blocks during index scans
CK_SKIP_CORRUPT

_INDEX_SCAN_CHE? :? check stopkey during index range scans
CK_STOPKEY

_INIT_GRANULE_I? :? number of granules to process for deferred cache
NTERVAL

_INIT_SQL_FILE?? :? File containing SQL statements to execute upon database
creation

_INJECT_STARTUP? :? inject fault in the startup code
_FAULT

_INLINE_SQL_IN_? :? inline SQL in PL/SQL
PLSQL

_INPLACE_UPDATE? :? inplace update retry for ora1551
_RETRY

_INQUIRY_RETRY_? :? if greater than 0 enables inquiry retry after specified
INTERVAL??????????? interval

_INSERT_ENABLE_? :? during parallel inserts high water marks are brokered
HWM_BROKERED

_INST_LOCKING_P? :? period an instance can retain a newly acquired level1
ERIOD?????????????? bitmap

_INTERCONNECT_C? :? if TRUE,checksum interconnect blocks
HECKSUM

_INTRAPART_PDML? :? Enable intra-partition updates/deletes
_ENABLED

_INTRAPART_PDML? :? Enable intra-partition updates/deletes with random
_RANDOMLOCAL_EN???? local dist
ABLED

_IN_MEMORY_TBS_? :? FALSE – disable fast path for alter tablespace read
SEARCH????????????? only

_IN_MEMORY_UNDO? :? Make in memory undo for top level transactions
_IOCALIBRATE_IN? :? iocalibrate init I/Os per process
IT_IOS

_IOCALIBRATE_MA? :? iocalibrate max I/Os per process
X_IOS

_IOQ_FANIN_MULT? :? IOQ miss count before a miss exception
IPLIER

_IORM_TOUT?????? :? IORM scheduler timeout value in msec
_IOR_SERIALIZE_? :? inject fault in the ior serialize code
FAULT

_IOSLAVE_BATCH_? :? Per attempt IOs picked
COUNT

_IOSLAVE_ISSUE_? :? IOs issued before completion check
COUNT

_IO_INTERNAL_TE? :? I/O internal testing parameter
ST

_IO_OSD_PARAM??? :? OSD specific parameter
_IO_OUTLIER_THR? :? Latency threshold for io_outlier table
ESHOLD

_IO_RESOURCE_MA? :? io resource manager always on
NAGER_ALWAYS_ON

_IO_SHARED_POOL? :? Size of I/O buffer pool from SGA
_SIZE

_IO_SLAVES_DISA? :? Do not use I/O slaves
BLED

_IO_STATISTICS?? :? if TRUE,ksfd I/O statistics are collected
_IPC_FAIL_NETWO? :? Simulate cluster network failer
RK

_IPC_TEST_FAILO? :? Test transparent cluster network failover
VER

_IPC_TEST_MULT_? :? simulate multiple cluster networks
NETS

_IPDDB_ENABLE??? :? Enable IPD/DB data collection
_JOB_QUEUE_INTE? :? Wakeup interval in seconds for job queue co-ordinator
RVAL

_K2Q_LATCHES???? :? number of k2q latches
_KA_ALLOW_REENA? :? reenability of kernel accelerator service after disable
BLE

_KA_COMPATIBILI? :? kernel accelerator compatibility operation requirement
TY_REQUIREMENT

_KA_DOORBELL???? :? kernel accelerator doorbell mode
_KA_LOCKS_PER_S? :? locks per sector in kernel accelerator
ECTOR

_KA_MODE???????? :? kernel accelerator mode
_KA_MSG_REAP_CO? :? maximum number of KA messages to receive and process
UNT???????????????? per wait

_KA_PBATCH_MESS? :? kernel accelerator perform pbatch messages
AGES

_KCFIS_AUTOMEM_? :? Set auto memory management control for kcfis memory
LEVEL?????????????? allocation

_KCFIS_BLOCK_DU? :? Smart IO block dump level
MP_LEVEL

_KCFIS_CACHING_? :? enable kcfis intra-scan session caching
ENABLED

_KCFIS_CELLOFLS? :? Enable offload server usage for passthru operations
RV_PASSTHRU_ENA
BLED

_KCFIS_CELLOFLS? :? Enable offload server usage for offload operations
RV_USAGE_ENABLE
D

_KCFIS_CELL_PAS? :? Allow dataonly passthru for smart scan
STHRU_DATAONLY

_KCFIS_CELL_PAS? :? Do not perform smart IO filtering on the cell
STHRU_ENABLED

_KCFIS_CELL_PAS? :? Enable automatic passthru mode when cell CPU util is
STHRU_FROMCPU_E???? too high
NABLED

_KCFIS_CONTROL1? :? Kcfis control1
_KCFIS_CONTROL2? :? Kcfis control2
_KCFIS_CONTROL3? :? Kcfis control3
_KCFIS_CONTROL4? :? Kcfis control4
_KCFIS_CONTROL5? :? Kcfis control5
_KCFIS_CONTROL6? :? Kcfis control6
_KCFIS_DISABLE_? :? Don’t use platform-specific decryption on the storage
PLATFORM_DECRYP???? cell
TION

_KCFIS_DUMP_COR? :? Dump any corrupt blocks found during smart IO
RUPT_BLOCK

_KCFIS_FAST_RES? :? Enable smart scan optimization for fast response (first
PONSE_ENABLED?????? rows)

_KCFIS_FAST_RES? :? Fast response – The size of the first IO in logical
PONSE_INITIOSIZ???? blocks
E

_KCFIS_FAST_RES? :? Fast response – (next IO size = current IO size * this
PONSE_IOSIZEMUL???? parameter)
T

_KCFIS_FAST_RES? :? Fast response – the number of IOs after which smartIO
PONSE_THRESHOLD???? is used

_KCFIS_FAULT_CO? :? Fault Injection Control
NTROL

_KCFIS_IOREQS_T? :? Enable Smart IO requests throttling
HROTTLE_ENABLED

_KCFIS_IO_PREFE? :? Smart IO prefetch size for a cell
TCH_SIZE

_KCFIS_KEPT_IN_? :? Enable usage of cellsrv flash cache for kept objects
CELLFC_ENABLED

_KCFIS_LARGE_PA? :? enable large payload to be passed to cellsrv
YLOAD_ENABLED

_KCFIS_MAX_CACH? :? Sets the maximum number of kcfis sessions cached
ED_SESSIONS

_KCFIS_MAX_OUT_? :? Sets the maximum number of outstanding translations in
TRANSLATIONS??????? kcfis

_KCFIS_NONKEPT_? :? Enable use of cellsrv flash cache for non-kept objects
IN_CELLFC_ENABL
ED

_KCFIS_OSS_IO_S? :? KCFIS OSS I/O size
IZE

_KCFIS_QM_PRIOR? :? Prioritize Quaranitine Manager system plan
ITIZE_SYS_PLAN

_KCFIS_QM_USER_? :? Quaranitine Manager user plan name
PLAN_NAME

_KCFIS_RDBMS_BL? :? Use block IO instead of smart IO in the smart IO module
OCKIO_ENABLED?????? on RDBMS

_KCFIS_READ_BUF? :? KCFIS Read Buffer (per session) memory limit in bytes
FER_LIMIT

_KCFIS_SPAWN_DE? :? Decides whether to spawn the debugger at kcfis
BUGGER????????????? initialize

_KCFIS_STATS_LE? :? sets kcfis stats level
VEL

_KCFIS_STORAGEI? :? Debug mode for storage index on the cell
DX_DIAG_MODE

_KCFIS_STORAGEI? :? Don’t use storage index optimization on the storage
DX_DISABLED???????? cell

_KCFIS_TEST_CON? :? kcfis tst control1
TROL1

_KCFIS_TRACE_BU? :? KCFIS tracing bucket size in bytes
CKET_SIZE

_KCL_COMMIT????? :? if TRUE,call kjbcommit
_KCL_CONSERVATI? :? if TRUE,conservatively log flush before CR serving
VE_LOG_FLUSH

_KCL_DEBUG?????? :? if TRUE,record le history
_KCL_INDEX_SPLI? :? if TRUE,reject pings on blocks in middle of a split
T

_KDBL_ENABLE_PO? :? allocate dbas after populating data buffers
ST_ALLOCATION

_KDIC_SEGARR_SZ? :? size threshold for segmented arrays for
seg_info_kdicctx

_KDIS_REJECT_LE? :? b+tree level to enable rejection limit
VEL

_KDIS_REJECT_LI? :? #block rejections in space reclamation before segment
MIT???????????????? extension

_KDIS_REJECT_OP? :? enable rejection heuristic for branch splits
S

_KDIZOLTP_UNCOM? :? kdizoltp uncomp sentinal frequency
PSENTINAL_FREQ

_KDI_AVOID_BLOC? :? avoid index block checking on sensitive opcodes
K_CHECKING

_KDLF_READ_FLAG? :? kdlf read flag
_KDLI_ALLOW_COR? :? allow corrupt filesystem_logging data blocks during
RUPT??????????????? read/write

_KDLI_BUFFER_IN? :? use buffer injection for CACHE [NO]LOGGING lobs
JECT

_KDLI_CACHEABLE? :? minimum lob length for inode cacheability
_LENGTH

_KDLI_CACHE_INO? :? cache inode state across calls
DE

_KDLI_CACHE_REA? :? minimum lob size for cache->nocache read (0 disables
D_THRESHOLD???????? heuristic)

_KDLI_CACHE_SIZ? :? maximum #entries in inode cache
E

_KDLI_CACHE_VER? :? verify cached inode via deserialization
IFY

_KDLI_CACHE_WRI? :? minimum lob size for cache->nocache write (0 disables
TE_THRESHOLD??????? heuristic)

_KDLI_CHECKPOIN? :? do not invalidate cache buffers after write
T_FLUSH

_KDLI_DBC??????? :? override db_block_checking setting for securefiles
_KDLI_DELAY_FLU? :? delay flushing cache writes to direct-write lobs
SHES

_KDLI_DESCN_ADJ? :? coalesce extents with deallocation scn adjustment
_KDLI_FLUSH_CAC? :? flush cache-reads data blocks after load
HE_READS

_KDLI_FLUSH_INJ? :? flush injected buffers of CACHE NOLOGGING lobs before
ECTIONS???????????? commit

_KDLI_FORCE_CR?? :? force CR when reading data blocks of direct-write lobs
_KDLI_FORCE_CR_? :? force CR when reading metadata blocks of direct-write
META??????????????? lobs

_KDLI_FORCE_STO? :? force storage settings for all lobs
RAGE

_KDLI_FULL_READ? :? maximum lob size for full readahead
AHEAD_THRESHOLD

_KDLI_INJECT_AS? :? inject asserts into the inode
SERT

_KDLI_INJECT_BA? :? buffer injection batch size [1,KCBNEWMAX]
TCH

_KDLI_INJECT_CR? :? inject crashes into the inode
ASH

_KDLI_INLINE_XF? :? allow inline transformed lobs
M

_KDLI_INODE_PRE? :? inline inode evolution preference (data,headless,lhb)
FERENCE

_KDLI_INPLACE_O? :? maximum inplace overwrite size (> chunksize)
VERWRITE

_KDLI_ITREE_ENT? :? #entries in lhb/itree blocks (for testing only)
RIES

_KDLI_MEMORY_PR? :? trace accesses to inode memory outside kdli API
OTECT?????????????? functions

_KDLI_MTS_SO???? :? use state objects in shared server for asyncIO
pipelines

_KDLI_ONEBLK???? :? allocate chunks as single blocks
_KDLI_PREALLOCA? :? preallocation mode for lob growth
TION_MODE

_KDLI_PREALLOCA? :? percentage preallocation [0 .. inf) for lob growth
TION_PCT

_KDLI_RALC_LENG? :? lob length threshold to trigger rounded allocations
TH

_KDLI_RALC_ROUN? :? rounding granularity for rounded allocations
DING

_KDLI_RCI_LOBMA? :? #entries in RCI lobmap before migration to lhb
P_ENTRIES

_KDLI_READAHEAD? :? shared/cached IO readahead limit
_LIMIT

_KDLI_READAHEAD? :? shared/cached IO readahead strategy
_STRATEGY

_KDLI_RECENT_SC? :? use recent (not dependent) scns for block
N?????????????????? format/allocation

_KDLI_RESHAPE??? :? reshape an inode to inline or headless on length
truncation

_KDLI_SAFE_CALL? :? invoke inode read/write callbacks safely
BACKS

_KDLI_SIO_ASYNC? :? asynchronous shared IO
_KDLI_SIO_BACKO? :? use exponential backoff when attempting SIOP
FF????????????????? allocations

_KDLI_SIO_BPS??? :? maximum blocks per IO slot
_KDLI_SIO_DOP??? :? degree-of-parallelism in the SIO keep pool
_KDLI_SIO_FBWRI? :? percentage of buffer used for direct writes in
TE_PCT????????????? flashback-db

_KDLI_SIO_FGIO?? :? reap asynchronous IO in the foreground
_KDLI_SIO_FILEO? :? shared IO fileopen mode: datasync vs nodatasync vs
PEN???????????????? async

_KDLI_SIO_FLUSH? :? enable shared IO pool operations
_KDLI_SIO_FREE?? :? free IO buffers when not in active use
_KDLI_SIO_MIN_R? :? shared IO pool read threshold
EAD

_KDLI_SIO_MIN_W? :? shared IO pool write threshold
RITE

_KDLI_SIO_NBUFS? :? maximum #IO buffers to allocate per session
_KDLI_SIO_NIODS? :? maximum #IO descriptors to allocate per session
_KDLI_SIO_ON???? :? enable shared IO pool operations
_KDLI_SIO_PGA??? :? use PGA allocations for direct IO
_KDLI_SIO_PGA_T? :? PGA allocations come from toplevel PGA heap
OP

_KDLI_SIO_STRAT? :? shared IO strategy: block vs. extent
EGY

_KDLI_SIO_WRITE? :? percentage of buffer used for direct writes
_PCT

_KDLI_SMALL_CAC? :? size limit of small inode cache
HE_LIMIT

_KDLI_SORT_DBAS? :? sort dbas during chunkification
_KDLI_SPACE_CAC? :? maximum size of the space cache in #blocks
HE_LIMIT

_KDLI_SQUEEZE??? :? compact lobmap extents with contiguous dbas
_KDLI_STOP_BSZ?? :? undocumented parameter for internal use only
_KDLI_STOP_DBA?? :? undocumented parameter for internal use only
_KDLI_STOP_FSZ?? :? undocumented parameter for internal use only
_KDLI_STOP_NIO?? :? undocumented parameter for internal use only
_KDLI_STOP_TSN?? :? undocumented parameter for internal use only
_KDLI_TIMER_DMP? :? dump inode timers on session termination
_KDLI_TIMER_TRC? :? trace inode timers to uts/tracefile
_KDLI_TRACE????? :? inode trace level
_KDLI_VLL_DIREC? :? use skip-navigation and direct-positioning in
T?????????????????? vll-domain

_KDLU_MAX_BUCKE? :? UTS kdlu bucket size
T_SIZE

_KDLU_MAX_BUCKE? :? UTS kdlu bucket size for mts
T_SIZE_MTS

_KDLU_TRACE_LAY? :? UTS kdlu per-layer trace level
ER

_KDLU_TRACE_SYS? :? UTS system dump
TEM

_KDLWP_FLUSH_TH? :? WGC flush threshold in bytes
RESHOLD

_KDLW_ENABLE_KS? :? enable ksi locking for lobs
I_LOCKING

_KDLW_ENABLE_WR? :? enable lob write gathering for sql txns
ITE_GATHERING

_KDLXP_CMP_SUBU? :? size of compression sub-unit in bytes
NIT_SIZE

_KDLXP_DEDUP_FL? :? deduplication flush threshold in bytes
USH_THRESHOLD

_KDLXP_DEDUP_HA? :? secure hash algorithm for deduplication – only on
SH_ALGO???????????? SecureFiles

_KDLXP_DEDUP_IN? :? deduplication pct size increase by which inlining
L_PCTFREE?????????? avoided

_KDLXP_DEDUP_PR? :? deduplication prefix hash threshold in bytes
EFIX_THRESHOLD

_KDLXP_DEDUP_WA? :? deduplication length to allow write-append
PP_LEN

_KDLXP_LOBCMPAD? :? enable adaptive compression – only on SecureFiles
P

_KDLXP_LOBCMPLE? :? Default securefile compression
VEL

_KDLXP_LOBCMPRC? :? Default securefile compression map version
IVER

_KDLXP_LOBCOMPR? :? enable lob compression – only on SecureFiles
ESS

_KDLXP_LOBDEDUP? :? enable lob deduplication – only on SecureFiles
LICATE

_KDLXP_LOBDEDUP? :? enable deduplicate validate – only on SecureFiles
VALIDATE

_KDLXP_LOBENCRY? :? enable lob encryption – only on SecureFiles
PT

_KDLXP_MINCMP??? :? minimum comp ratio in pct – only on SecureFiles
_KDLXP_MINCMPLE? :? minimum loblen to compress – only on SecureFiles
N

_KDLXP_MINXFM_S? :? minimum transformation size in bytes
IZE

_KDLXP_SPARE1??? :? deduplication spare 1
_KDLXP_UNCMP???? :? lob data uncompressed – only on SecureFiles
_KDLXP_XFMCACHE? :? enable xfm cache – only on SecureFiles
_KDTGSP_RETRIES? :? max number of retries in kdtgsp if space returns same
block

_KDT_BUFFERING?? :? control kdt buffering for conventional inserts
_KDU_ARRAY_DEPT? :? array update retry recursion depth limits
H

_KDZ_HCC_FLAGS?? :? Miscellaneous HCC flags
_KDZ_HCC_TRACK_? :? Enable rowid tracking during updates
UPD_RIDS

_KDZ_PRED_NROWS? :? Number of rows to predicate at a time in kdzt
_KDZ_PROJ_NROWS? :? Number of rows to project at a time in kdzt
_KD_SYMTAB_CHK?? :? enable or disable symbol table integrity block check
_KEBM_NSTRIKES?? :? kebm # strikes to auto suspend an action
_KEBM_SUSPENSIO? :? kebm auto suspension time in seconds
N_TIME

_KECAP_CACHE_SI? :? Workload Replay INTERNAL parameter used to set memory
ZE????????????????? usage in? Application Replay

_KEEP_REMOTE_CO? :? remote column size does not get modified
LUMN_SIZE

_KERNEL_MESSAGE? :? kernel message network driver
_NETWORK_DRIVER

_KES_PARSE_MODE? :? SQL Tune/SPA KES Layer Parse Model control parameter
L

_KFFMAP_HASH_SI? :? size of kffmap_hash table
ZE

_KFFMLK_HASH_SI? :? size of kffmlk_hash table
ZE

_KFFMOP_CHUNKS?? :? number of chunks of kffmop’s
_KFFMOP_HASH_SI? :? size of kffmop_hash table
ZE

_KFM_DISABLE_SE? :? disable set fence calls and revert to default (process
T_FENCE???????????? fence)

_KGHDSIDX_COUNT? :? max kghdsidx count
_KGLSIM_MAXMEM_? :? max percentage of shared pool size to be used for KGL
PERCENT???????????? advice

_KGL_BUCKET_COU? :? Library cache hash table bucket count
NT????????????????? (2^_kgl_bucket_count * 256)

_KGL_CAP_HD_ALO? :? capture stacks for library cache handle allocation
_STACKS

_KGL_CLUSTER_LO? :? Library cache support for cluster lock
CK

_KGL_CLUSTER_LO? :? Library cache support for cluster lock read mostly
CK_READ_MOSTLY????? optimization

_KGL_CLUSTER_PI? :? Library cache support for cluster pins
N

_KGL_DEBUG?????? :? Library cache debugging
_KGL_FIXED_EXTE? :? fixed extent size for library cache memory allocations
NTS

_KGL_HASH_COLLI? :? Library cache name hash collision possible
SION

_KGL_HEAP_SIZE?? :? extent size for library cache heap 0
_KGL_HOT_OBJECT? :? Number of copies for the hot object
_COPIES

_KGL_KQR_CAP_SO? :? capture stacks for library and row cache state objects
_STACKS

_KGL_LARGE_HEAP? :? maximum heap size before KGL writes warnings to the
_WARNING_THRESH???? alert log
OLD

_KGL_LATCH_COUN? :? number of library cache latches
T

_KGL_MESSAGE_LO? :? RAC message lock count
CKS

_KGL_MIN_CACHED? :? Minimum cached SO count. If > 1 can help find SO
_SO_COUNT?????????? corruptions

_KGL_TIME_TO_WA? :? time to wait for locks and pins before timing out
IT_FOR_LOCKS

_KGSB_THRESHOLD? :? threshold size for base allocator
_SIZE

_KGX_LATCHES???? :? # of mutex latches if CAS is not supported.
_KILL_CONTROLFI? :? enable killing controlfile enqueue blocker on timeout
LE_ENQUEUE_BLOC
KER

_KILL_DIAGNOSTI? :? timeout delay in seconds before killing enqueue blocker
CS_TIMEOUT

_KILL_ENQUEUE_B? :? if greater than 0 enables killing enqueue blocker
LOCKER

_KILL_JAVA_THRE? :? Kill Java threads and do sessionspace migration at end
ADS_ON_EOC????????? of call

_KILL_SESSION_D? :? Process dump on kill session immediate
UMP

_KJAC_FORCE_OUT? :? if TRUE,enable to run force outcome on the current
COME_CURRENT_SE???? session
SSION

_KJDD_CALL_STAC? :? Enables printing of short call stack with the WFG
K_DUMP_ENABLED

_KJDD_WFG_DUMP_? :? To control the way Wait-For_Graph is dumped
CNTRL

_KJLTMAXGT?????? :? record latch requests that takes longer than this many
us

_KJLTMAXHT?????? :? record latch reqeust that are held longer than this
many us

_KJLTON????????? :? track DLM latch usage on/off
_KKFI_TRACE????? :? trace expression substitution
_KKS_FREE_CURSO? :? percentage of cursor stats buckets to scan on each
R_STAT_PCT????????? load,in 1/10th of a percent

_KOKLI_CACHE_SI? :? Size limit of ADT Table Lookup Cache
ZE

_KOKLN_CURRENT_? :? Make all LOB reads for this session ‘current’ reads
READ

_KOLFUSESLF????? :? allow kolf to use slffopen
_KQDSN_MAX_INST? :? maximum bits used for instance value in sequence
ANCE_BITS?????????? partition

_KQDSN_MIN_INST? :? minimum bits used for instance value in sequence
ANCE_BITS?????????? partition

_KQDSN_PARTITIO? :? ratio of instance to session bits in sequence partition
N_RATIO

_KQL_SUBHEAP_TR? :? tracing level for library cache subheap level pins
ACE

_KQR_OPTIMISTIC? :? optimistic reading of row cache objects
_READS

_KSB_RESTART_CL? :? process uptime for restarts
EAN_TIME

_KSB_RESTART_PO? :? process restart policy times in seconds
LICY_TIMES

_KSDXDOCMD_DEFA? :? default timeout for internal oradebug commands
ULT_TIMEOUT_MS

_KSDXDOCMD_ENAB? :? if TRUE ksdxdocmd* invocations are enabled
LED

_KSDXW_CINI_FLG? :? ksdxw context initialization flag
_KSDXW_NBUFS???? :? ksdxw number of buffers in buffered mode
_KSDXW_NUM_PGW?? :? number of watchpoints on a per-process basis
_KSDXW_NUM_SGW?? :? number of watchpoints to be shared by all processes
_KSDXW_STACK_DE? :? number of PCs to collect in the stack when watchpoint
PTH???????????????? is hit

_KSDX_CHARSET_R? :? ratio between the system and oradebug character set
ATIO

_KSD_TEST_PARAM? :? KSD test parmeter
_KSE_DIE_TIMEOU? :? amount of time a dying process is spared by PMON (in
T?????????????????? centi-secs)

_KSE_PC_TABLE_S? :? kse pc table cache size
IZE

_KSE_SIGNATURE_? :? number of entries in the kse stack signature cache
ENTRIES

_KSE_SIGNATURE_? :? number of stack frames to cache per kse signature
LIMIT

_KSE_SNAP_RING_? :? should error snap ring entries show a short stack trace
RECORD_STACK

_KSE_SNAP_RING_? :? ring buffer to debug internal error 17090
SIZE

_KSE_TRACE_INT_? :? enables soft assert of KGECLEAERERROR is cleares an
MSG_CLEAR?????????? interrupt message

_KSFD_VERIFY_WR? :? verify asynchronous writes issued through ksfd
ITE

_KSIPC_LIBIPC_P? :? over-ride default location of libipc
ATH

_KSIPC_MODE????? :? ksipc mode
_KSIPC_SPARE_PA? :? ksipc spare param 1
RAM1

_KSIPC_SPARE_PA? :? ksipc spare param 2
RAM2

_KSIPC_WAIT_FLA? :? tune ksipcwait
GS

_KSI_CLIENTLOCK? :? if TRUE,DLM-clients can provide the lock memory
S_ENABLED

_KSI_TRACE?????? :? KSI trace string of lock type(s)
_KSI_TRACE_BUCK? :? memory tracing: use ksi-private or rdbms-shared bucket
ET

_KSI_TRACE_BUCK? :? size of the KSI trace bucket
ET_SIZE

_KSMB_DEBUG????? :? ksmb debug flags
_KSMD_PROTECT_M? :? KSMD protect mode for catching stale access
ODE

_KSMG_GRANULE_L? :? granule locking status
OCKING_STATUS

_KSMG_GRANULE_S? :? granule size in bytes
IZE

_KSMG_LOCK_CHEC? :? timeout action interval in minutes
K_INTERVAL

_KSMG_LOCK_REAC? :? repeat count for acquisition of locks
QUIRE_COUNT

_KSMLSAF???????? :? KSM log alloc and free
_KSM_POST_SGA_I? :? seconds to delay instance startup at sga initialization
NIT_NOTIF_DELAY???? (post)
_SECS

_KSM_PRE_SGA_IN? :? seconds to delay instance startup at sga initialization
IT_NOTIF_DELAY_???? (pre)
SECS

_KSPOL_TAC_TIME? :? timeouts for TAC registerd by kspol
OUT

_KSR_UNIT_TEST_? :? number of ksr unit test processes
PROCESSES

_KSS_CALLSTACK_? :? state object callstack trace type
TYPE

_KSS_QUIET?????? :? if TRUE access violations during kss dumps are not
recorded

_KSUITM_ADDON_T? :? command to execute when dead processes don’t go away
RCCMD

_KSUITM_DONT_KI? :? delay inst. termination to allow processes to dump
LL_DUMPER

_KSU_DIAG_KILL_? :? number of seconds ksuitm waits before killing diag
TIME

_KSVPPKTMODE???? :? ksv internal pkt test
_KSV_DYNAMIC_FL? :? ksv dynamic flags 1 – override default behavior
AGS1

_KSV_MAX_SPAWN_? :? bg slave spawn failure limit
FAIL_LIMIT

_KSV_POOL_HANG_? :? bg slave pool terminate timeout
KILL_TO

_KSV_POOL_WAIT_? :? bg slave pool wait limit
TIMEOUT

_KSV_SLAVE_EXIT? :? slave exit timeout
_TIMEOUT

_KSV_SPAWN_CONT? :? control all spawning of background slaves
ROL_ALL

_KSV_STATIC_FLA? :? ksv static flags 1 – override default behavior
GS1

_KSXP_COMPAT_FL? :? ksxp compat flags
AGS

_KSXP_CONTROL_F? :? modify ksxp behavior
LAGS

_KSXP_DIAGMODE?? :? set to OFF to disable automatic slowsend diagnostics
_KSXP_DISABLE_C? :? disable CLSS interconnects
LSS

_KSXP_DISABLE_D? :? disable dynamic loadin of lib skgxp
YNAMIC_LOADING

_KSXP_DISABLE_I? :? disable ipc statistics
PC_STATS

_KSXP_DISABLE_R? :? disable possibility of starting rolling migration
OLLING_MIGRATIO
N

_KSXP_DUMP_TIME? :? set timeout for kjzddmp request
OUT

_KSXP_DYNAMIC_S? :? dynamic skgxp parameters
KGXP_PARAM

_KSXP_IF_CONFIG? :? ksxp if config flags
_KSXP_INIT_STAT? :? initial number arrays for ipc statistics
S_BKTS

_KSXP_LWIPC_ENA? :? enable lwipc for KSXP
BLED

_KSXP_MAX_STATS? :? max. arrays for ipc statistics
_BKTS

_KSXP_PING_ENAB? :? disable dynamic loadin of lib skgxp
LE

_KSXP_PING_POLL? :? max. arrays for ipc statistics
ING_TIME

_KSXP_REAPING??? :? tune ksxp layer reaping limit
_KSXP_REPORTING? :? reporting process for KSXP
_PROCESS

_KSXP_SEND_TIME? :? set timeout for sends queued with the inter-instance
OUT???????????????? IPC

_KSXP_SKGXPG_LA? :? last defined skgxpg parameter – ksxp
ST_PARAMETER

_KSXP_SKGXP_ANT? :? SKGXP ANT options
_OPTIONS

_KSXP_SKGXP_COM? :? over-ride default location of lib skgxp compat
PAT_LIBRARY_PAT
H

_KSXP_SKGXP_CTX? :? IPC debug options flags (RAC)
_FLAGS1

_KSXP_SKGXP_CTX? :? IPC debug options flags mask (RAC)
_FLAGS1MASK

_KSXP_SKGXP_DYN? :? IPC protocol override (RAC)
AMIC_PROTOCOL?????? (0/-1=*,2=UDP,3=RDS,!0x1000=ipc_X)

_KSXP_SKGXP_INE? :? limit SKGXP networks
TS

_KSXP_SKGXP_LIB? :? over-ride default location of lib skgxp
RARY_PATH

_KSXP_SKGXP_RGN? :? region socket limits (0xFFFFNNXX): F=flags,N=min,
_PORTS????????????? X=max

_KSXP_SKGXP_SPA? :? ipc ksxp spare parameter 1
RE_PARAM1

_KSXP_SKGXP_SPA? :? ipc ksxp spare parameter 2
RE_PARAM2

_KSXP_SKGXP_SPA? :? ipc ksxp spare parameter 3
RE_PARAM3

_KSXP_SKGXP_SPA? :? ipc ksxp spare parameter 4
RE_PARAM4

_KSXP_SKGXP_SPA? :? ipc ksxp spare parameter 5
RE_PARAM5

_KSXP_STATS_MEM? :? limit ipc statistics memory. this parameter is a
_LMT??????????????? percentage value

_KSXP_TESTING??? :? KSXP test parameter
_KSXP_UNIT_TEST? :? enable byte transformation unit test
_BYTE_TRANSFORM
ATION

_KSXP_WAIT_FLAG? :? tune ksxpwait
S

_KTB_DEBUG_FLAG? :? ktb-layer debug flags
S

_KTC_DEBUG?????? :? for ktc debug
_KTC_LATCHES???? :? number of ktc latches
_KTILMSC_EXP???? :? expiration time of ktilm segment cache (in second)
_KTSLJ_SEGEXT_M? :? segment pre-extension max size in MB (0: unlimited)
AX_MB

_KTSLJ_SEGEXT_R? :? segment pre-extension retry
ETRY

_KTSLJ_SEGEXT_W? :? segment pre-extension warning threshold in percentage
ARNING

_KTSLJ_SEGEXT_W? :? segment pre-extension warning threshold in MB
ARNING_MB

_KTSPSRCH_MAXSC? :? maximum segments supported by space search cache
_KTSPSRCH_MAXSK? :? space search cache rejection skip upper limit
IP

_KTSPSRCH_SCCHK? :? cleanout check time of space search cache
_KTSPSRCH_SCEXP? :? expiration time of space search cache
_KTST_RSS_MAX??? :? maximum temp extents to be released across instance
_KTST_RSS_MIN??? :? minimum temp extents to be released across instance
_KTST_RSS_RETRY? :? maximum retries of sort segment release
_KTTEXT_WARNING? :? tablespace pre-extension warning threshold in
percentage

_KTU_LATCHES???? :? number of KTU latches
_KU_TRACE??????? :? datapump trace parameter
_KXDBIO_CTX_INI? :? initial count of KXDBIO state object
T_COUNT

_KXDBIO_DISABLE? :? KXDBIO Disable offload for the set opcodes.? Value is a
_OFFLOAD_OPCODE???? Bitmap of??? 0x00000001 – disable cell to cell data
copy offload??? 0x00000002 – disable disk scrubbing
offload to cell??? 0x00000004 – disable offloaded
writes to cell

_KXDBIO_ENABLE_? :? KXDBIO Enable Dumb storage simulation for the set
DS_OPCODE?????????? opcodes.

_KXDBIO_HCA_LOA? :? HCA loadavg threshold at which writes need to get
DAVG_THRESH???????? offloaded

_KXDBIO_UT_CTL?? :? kxdbio unit test controls
_LARGE_POOL_MIN? :? minimum allocation size in bytes for the large
_ALLOC????????????? allocation pool

_LAST_ALLOCATIO? :? period over which an instance can retain an active
N_PERIOD??????????? level1 bitmap

_LATCH_CLASSES?? :? latch classes override
_LATCH_CLASS_0?? :? latch class 0
_LATCH_CLASS_1?? :? latch class 1
_LATCH_CLASS_2?? :? latch class 2
_LATCH_CLASS_3?? :? latch class 3
_LATCH_CLASS_4?? :? latch class 4
_LATCH_CLASS_5?? :? latch class 5
_LATCH_CLASS_6?? :? latch class 6
_LATCH_CLASS_7?? :? latch class 7
_LATCH_MISS_STA? :? Sid of process for which to collect latch stats
T_SID

_LATCH_WAIT_LIS? :? Time to sleep on latch wait list until getting priority
T_PRI_SLEEP_SEC
S

_LDR_IO_SIZE???? :? size of write IOs used during a load operation
_LDR_IO_SIZE2??? :? size of write IOs used during a load operation of EHCC
with HWMB

_LDR_PGA_LIM???? :? pga limit,beyond which new partition loads are delayed
_LDR_TEMPSEG_TH? :? amount to buffer prior to allocating temp segment
RESHOLD???????????? (extent sizing)

_LEFT_NESTED_LO? :? enable random distribution method for left of
OPS_RANDOM????????? nestedloops

_LGWR_DELAY_WRI? :? LGWR write delay for debugging
TE

_LGWR_IO_OUTLIE? :? LGWR I/O outlier frequency
R

_LGWR_IO_SLAVES? :? LGWR I/O slaves
_LGWR_MAX_NS_WT? :? Maximum wait time for lgwr to allow NetServer to
progress

_LGWR_NS_NL_MAX? :? Variable to simulate network latency or buffer
threshold

_LGWR_NS_NL_MIN? :? Variable to simulate network latency or buffer
threshold

_LGWR_NS_SIM_ER? :? Variable to simulate errors lgwrns
R

_LGWR_POSTS_FOR? :? LGWR posts commit waiters for pending broadcasts
_PENDING_BCASTS

_LGWR_TA_SIM_ER? :? Variable to simulate errors lgwr true async
R

_LIBRARY_CACHE_? :? whether KGL advice should be turned on
ADVICE

_LIGHTWEIGHT_HD? :? Lightweight headers for redo
RS

_LIKE_WITH_BIND? :? treat LIKE predicate with bind as an equality predicate
_AS_EQUALITY

_LIMIT_ITLS????? :? limit the number of ITLs in OLTP Compressed Tables
_LINUX_PREPAGE_? :? prepage large pages during allocation on Linux
LARGE_PAGES

_LMN_COMPRESSIO? :? suppl logging for compression enabled
N

_LM_ACTIVATE_LM? :? threshold value to activate an additional lms
S_THRESHOLD

_LM_ASM_ENQ_HAS? :? if TRUE makes ASM use enqueue master hashing for fusion
HING??????????????? locks

_LM_BATCH_COMPR? :? GES threshold to start compression on batch messages
ESSION_THRESHOL
D

_LM_BETTER_DDVI? :? GES better deadlock victim
CTIM

_LM_BIG_CLUSTER? :? enable certain big cluster optimizations in drm
_OPTIMIZATIONS

_LM_BROADCAST_R? :? Enable broadcast of highest held mode of resource.
ES

_LM_BROADCAST_R? :? Trace string of resource type(s)
ESNAME

_LM_CACHE_ALLOC? :? ratio of cached over allocated resources
ATED_RES_RATIO

_LM_CACHE_LVL0_? :? how often to cleanup level 0 cache res (in sec)
CLEANUP

_LM_CACHE_RES_C? :? percentage of cached resources should be cleanup
LEANUP

_LM_CACHE_RES_C? :? max number of batches of cached resources to free per
LEANUP_TRIES??????? cleanup

_LM_CACHE_RES_O? :? ges resource cache options
PTIONS

_LM_CACHE_RES_S? :? multiple of iniital res cache below which cleanup is
KIP_CLEANUP???????? skipped

_LM_CACHE_RES_T? :? cache resource: string of lock types(s)
YPE

_LM_CHECKSUM_BA? :? GES checksum batch messages
TCH_MSG

_LM_COMM_CHANNE? :? GES communication channel type
L

_LM_COMM_MSGQ_B? :? busy wait time in microsecond for msgq
USYWAIT

_LM_COMM_REAP_C? :? message reap count for receive
OUNT

_LM_COMM_TKTS_A? :? Ticket allocation addition factor
DD_FACTOR

_LM_COMM_TKTS_C? :? Weighted average calculation interval length (second)
ALC_PERIOD_LENG
TH

_LM_COMM_TKTS_M? :? Max number of periods used in weighted avearage
AX_PERIODS????????? calculation

_LM_COMM_TKTS_M? :? Time to wait before allowing an allocation decrease
IN_DECREASE_WAI
T

_LM_COMM_TKTS_M? :? Time to wait before allowing an allocation increase
IN_INCREASE_WAI
T

_LM_COMM_TKTS_M? :? Ticket allocation multiplication factor
ULT_FACTOR

_LM_COMM_TKTS_N? :? Null request frequency threshold (percentage)
ULLREQ_THRESHOL
D

_LM_COMPRESSION? :? GES compression scheme
_SCHEME

_LM_CONTIGUOUS_? :? number of contiguous blocks that will hash to the same
RES_COUNT?????????? HV bucket

_LM_DD_IGNORE_N? :? if TRUE nodeadlockwait/nodeadlockblock options are
ODD???????????????? ignored

_LM_DD_INTERVAL? :? dd time interval in seconds
_LM_DD_MAXDUMP?? :? max number of locks to be dumped during dd validation
_LM_DD_MAX_SEAR? :? max dd search time per token
CH_TIME

_LM_DD_SCAN_INT? :? dd scan interval in seconds
ERVAL

_LM_DD_SEARCH_C? :? number of dd search per token get
NT

_LM_DEFERRED_MS? :? deferred message timeout
G_TIMEOUT

_LM_DRMOPT12???? :? enable drm scan optimizations in 12
_LM_DRMOPT12_NO? :? enable drm latching optimizations in 12
LATCH

_LM_DRM_BATCH_T? :? time in seconds to wait to batch drm requests
IME

_LM_DRM_DISABLE? :? disable drm in different level
_LM_DRM_HILOAD_? :? drm high load threshold percentage
PERCENTAGE

_LM_DRM_LOWLOAD? :? drm low load threshold percentage
_PERCENTAGE

_LM_DRM_MAX_REQ? :? dynamic remastering maximum affinity requests processed
UESTS?????????????? together

_LM_DRM_MIN_INT? :? minimum interval in secs between two consecutive drms
ERVAL

_LM_DRM_OBJECT_? :? enable/disable object scan to force full table scan
SCAN??????????????? always

_LM_DRM_WINDOW?? :? dynamic remastering bucket window size
_LM_DRM_XLATCH?? :? dynamic remastering forced exclusive latches
_LM_DUMP_NULL_L? :? dump null lock in state dump
OCK

_LM_DYNAMIC_LMS? :? dynamic lms invocation
_LM_DYNAMIC_LOA? :? dynamic load adjustment
D

_LM_ENABLE_AFF_? :? enables affinity benefit computations if TRUE
BENEFIT_STATS

_LM_ENQUEUE_BLO? :? enqueue blocker dump timeout
CKER_DUMP_TIMEO
UT

_LM_ENQUEUE_BLO? :? enqueue blocker dump timeout count
CKER_DUMP_TIMEO
UT_CNT

_LM_ENQUEUE_BLO? :? enqueue blocker kill timeout
CKER_KILL_TIMEO
UT

_LM_ENQUEUE_FRE? :? Number of enqueue freelist
ELIST

_LM_ENQUEUE_TIM? :? enqueue suggested min timeout in seconds
EOUT

_LM_ENQ_LOCK_FR? :? Number of ges enqueue element freelist
EELIST

_LM_ENQ_RCFG???? :? if TRUE enables enqueue reconfiguration
_LM_FDRM_STATS?? :? gather full drm statistics
_LM_FILE_AFFINI? :? mapping between file id and master instance number
TY

_LM_FILE_READ_M? :? mapping between read-mostly file id and master instance
OSTLY?????????????? number

_LM_FREEZE_KILL? :? timeout for killing unfrozen processes in rcfg/drm
_TIME?????????????? freeze step

_LM_FREE_QUEUE_? :? GES free queue threshold
THRESHOLD

_LM_GLOBAL_POST? :? if TRUE deliver global posts to remote nodes
S

_LM_HASHTABLE_B? :? High element threshold in hash table bucket
KT_HIGH

_LM_HASHTABLE_B? :? Low element threshold in hash table bucket
KT_LOW

_LM_HASHTABLE_B? :? Threshold for hash table resizing
KT_THR

_LM_HB_ACCEPTAB? :? list of acceptable hang conditions in heartbeat check
LE_HANG_CONDITI
ON

_LM_HB_CALLSTAC? :? hb diagnostic call stack collection time in seconds
K_COLLECT_TIME

_LM_HB_DISABLE_? :? list of process names to be disabled in heartbeat check
CHECK_LIST

_LM_HB_ENABLE_A? :? to enable the wait analysis with acceptable condition
CL_CHECK??????????? lists

_LM_HB_EXPONENT? :? heartbeat exponential hang time multiplier
IAL_HANG_TIME_F
ACTOR

_LM_HB_MAXIMUM_? :? maximum heartbeat hang report count
HANG_REPORT_COU
NT

_LM_HIGH_LOAD_S? :? high watermark system load percentage
YSLOAD_PERCENTA
GE

_LM_HIGH_LOAD_T? :? high load threshold parameter
HRESHOLD

_LM_IDLE_CONNEC? :? GES idle connection check
TION_CHECK

_LM_IDLE_CONNEC? :? GES idle connection check interval time
TION_CHECK_INTE
RVAL

_LM_IDLE_CONNEC? :? GES idle connection instance check callout
TION_INSTANCE_C
HECK_CALLOUT

_LM_IDLE_CONNEC? :? GES idle connection kill
TION_KILL

_LM_IDLE_CONNEC? :? GES idle connection max skip kill request
TION_KILL_MAX_S
KIPS

_LM_IDLE_CONNEC? :? GES maximum idle connection kill request ignore count
TION_MAX_IGNORE
_KILL_COUNT

_LM_IDLE_CONNEC? :? GES idle connection health quorum threshold
TION_QUORUM_THR
ESHOLD

_LM_KILL_FG_ON_? :? GES kill fg on IPC timeout
TIMEOUT

_LM_LHUPD_INTER? :? load and health update interval
VAL

_LM_LMD_WAITTIM? :? default wait time for lmd in centiseconds
E

_LM_LMON_NOWAIT? :? if TRUE makes lmon get nowait latches with timeout loop
_LATCH

_LM_LMS????????? :? number of background gcs server processes to start
_LM_LMS_OPT_PRI? :? enable freeslot lms priority optimization
ORITY

_LM_LMS_PRIORIT? :? frequency of LMS priority decisions in milliseconds
Y_CHECK_FREQUEN
CY

_LM_LMS_PRIORIT? :? enable lms priority modification
Y_DYNAMIC

_LM_LMS_RT_THRE? :? maximum number of real time lms processes on machine
SHOLD

_LM_LMS_SPIN???? :? make lms not sleep
_LM_LMS_WAITTIM? :? default wait time for lms in centiseconds
E

_LM_LOCAL_HP_EN? :? use static file affinity for HP enqueue mastership
Q

_LM_LOCKS??????? :? number of enqueues configured for cluster database
_LM_LOW_LOAD_PE? :? low watermark percentage for load threshold
RCENTAGE

_LM_MASTER_WEIG? :? master resource weight for this instance
HT

_LM_MAX_LMS????? :? max. number of background global cache server processes
_LM_MSG_BATCH_S? :? GES batch message size
IZE

_LM_MSG_CLEANUP? :? GES message buffer cleanup interval time
_INTERVAL

_LM_MSG_POOL_DU? :? GES message pool dump threshold in terms of buffer
MP_THRESHOLD??????? count

_LM_NODE_JOIN_O? :? cluster database node join optimization in reconfig
PT

_LM_NON_FAULT_T? :? disable cluster database fault-tolerance mode
OLERANT

_LM_NO_LH_CHECK? :? skip load and health check at decision points
_LM_NO_SYNC????? :? skip reconfiguration/drm syncr/synca messaging
_LM_NUM_BNFT_ST? :? number of buckets in the benefit stats hash table
ATS_BUCKETS

_LM_NUM_PT_BUCK? :? number of buckets in the object affinity hash table
ETS

_LM_NUM_PT_LATC? :? number of latches in the object affinity hash table
HES

_LM_POSTEVENT_B? :? postevent buffer size
UFFER_SIZE

_LM_PREREGISTER? :? enqueue type that requires pre-registration to css
_CSS_RESTYPE

_LM_PROCESS_BAT? :? GES implicit process batching for IPC messages
CHING

_LM_PROCESS_LOC? :? limit on scanning process lock queue instead of
K_Q_SCAN_LIMIT????? resource convert lock queue

_LM_PROCS??????? :? number of client processes configured for cluster
database

_LM_PROC_FREEZE? :? reconfiguration: process freeze timeout
_TIMEOUT

_LM_PSRCFG?????? :? enable pseudo reconfiguration
_LM_RAC_SPARE_D? :? rac parameter dp1
P1

_LM_RAC_SPARE_D? :? rac parameter dp10
P10

_LM_RAC_SPARE_D? :? rac parameter dp2
P2

_LM_RAC_SPARE_D? :? rac parameter dp3
P3

_LM_RAC_SPARE_D? :? rac parameter dp4
P4

_LM_RAC_SPARE_D? :? rac parameter dp5
P5

_LM_RAC_SPARE_D? :? rac parameter dp6
P6

_LM_RAC_SPARE_D? :? rac parameter dp7
P7

_LM_RAC_SPARE_D? :? rac parameter dp8
P8

_LM_RAC_SPARE_D? :? rac parameter dp9
P9

_LM_RAC_SPARE_P? :? rac parameter p1
1

_LM_RAC_SPARE_P? :? rac parameter p10
10

_LM_RAC_SPARE_P? :? rac parameter p2
2

_LM_RAC_SPARE_P? :? rac parameter p3
3

_LM_RAC_SPARE_P? :? rac parameter p4
4

_LM_RAC_SPARE_P? :? rac parameter p5
5

_LM_RAC_SPARE_P? :? rac parameter p6
6

_LM_RAC_SPARE_P? :? rac parameter p7
7

_LM_RAC_SPARE_P? :? rac parameter p8
8

_LM_RAC_SPARE_P? :? rac parameter p9
9

_LM_RCFG_TIMEOU? :? dlm reconfiguration timeout
T

_LM_RCVINST????? :? designated instance to do instance recovery
_LM_RCVR_HANG_A? :? receiver hang allow time in seconds
LLOW_TIME

_LM_RCVR_HANG_C? :? to kill receiver hang at control file IO
FIO_KILL

_LM_RCVR_HANG_C? :? receiver hang check frequency in seconds
HECK_FREQUENCY

_LM_RCVR_HANG_C? :? examine system load when check receiver health
HECK_SYSTEM_LOA
D

_LM_RCVR_HANG_K? :? to kill receiver hang
ILL

_LM_RCVR_HANG_S? :? systemstate dump level upon receiver hang
YSTEMSTATE_DUMP
_LEVEL

_LM_RESEND_OPEN? :? timeout in secs before resubmitting the open-convert
_CONVERT_TIMEOU
T

_LM_RESS???????? :? number of resources configured for cluster database
_LM_RES_HASH_BU? :? number of resource hash buckets
CKET

_LM_RES_PART???? :? number of resource partition configured for gcs
_LM_RES_TM_HASH? :? number of extra TM resource hash buckets
_BUCKET

_LM_RM_SLAVES??? :? if non zero,it enables remastering slaves
_LM_SENDPROXY_R? :? GES percentage of send proxy reserve of send tickets
ESERVE

_LM_SEND_MODE??? :? GES send mode
_LM_SEND_QUEUE_? :? GES send queue message batching
BATCHING

_LM_SEND_QUEUE_? :? GES send queue maximum length
LENGTH

_LM_SHARE_LOCK_? :? if TRUE enables share lock optimization
OPT

_LM_SINGLE_INST? :? enable single instance affinity lock optimization
_AFFINITY_LOCK

_LM_SPARE_THREA? :? number of spare threads to be created by the GPnP
DS????????????????? master

_LM_SPARE_UNDO?? :? number of spare undo tablespaces to be created by GPnP
master

_LM_SQ_BATCH_FA? :? GES send queue minimum batching factor
CTOR

_LM_SQ_BATCH_TY? :? GES send queue batching mechanism
PE

_LM_SQ_BATCH_WA? :? GES send queue batching waittime in tick
ITTICK

_LM_SYNC_TIMEOU? :? Synchronization timeout for DLM reconfiguration steps
T

_LM_TICKETS????? :? GES messaging tickets
_LM_TICKET_ACTI? :? Flow control ticket active sendback threshold
VE_SENDBACK

_LM_TX_DELTA???? :? TX lock localization delta
_LM_USE_GCR????? :? use GCR module if TRUE
_LM_USE_NEW_DEF? :? use new defered msg queue timeout action
MSGTMO_ACTION

_LM_USE_TX_TSN?? :? use undo tsn affinity master as TX enqueue master
_LM_VALIDATE_PB? :? GES process batch validation
ATCH

_LM_WAIT_PENDIN? :? GES wait on pending send queue
G_SEND_QUEUE

_LM_WATCHPOINT_? :? GES number of watchpoints
MAXIMUM

_LM_WATCHPOINT_? :? GES maximum time in seconds to keep watchpoint
TIMEOUT

_LM_XIDS???????? :? number of transaction IDs configured for cluster
database

_LOAD_WITHOUT_C? :? Load PL/SQL or Database objects without compilation
OMPILE

_LOCAL_ARC_ASSE? :? Assert whenever local ORL arch waits for space
RT_ON_WAIT

_LOCAL_COMMUNIC? :? enable local communication costing when TRUE
ATION_COSTING_E
NABLED

_LOCAL_COMMUNIC? :? set the ratio between global and local communication
ATION_RATIO???????? (0..100)

_LOCAL_HANG_ANA? :? the interval at which local hang analysis is run
LYSIS_INTERVAL_
SECS

_LOCK_REF_CONST? :? number of nowait attempts to lock referential
RAINT_COUNT???????? constraint

_LOCK_SGA_AREAS? :? Lock specified areas of the SGA in physical memory
_LOGOUT_STORM_R? :? number of processes that can logout in a second
ATE

_LOGOUT_STORM_R? :? maximum retry count for logouts
ETRYCNT

_LOGOUT_STORM_T? :? timeout in centi-seconds for time to wait between
IMEOUT????????????? retries

_LOG_ARCHIVE_AV? :? log archive avoid memcpy
OID_MEMCPY

_LOG_ARCHIVE_BU? :? Number of buffers to allocate for archiving
FFERS

_LOG_ARCHIVE_CA? :? archival callout
LLOUT

_LOG_ARCHIVE_NE? :? Log archive network redo buffer size used by ARCH
TWORK_REDO_SIZE

_LOG_ARCHIVE_PR? :? log archive protection auto demotion
OT_AUTO_DEMOTE

_LOG_ARCHIVE_ST? :? log archive security strong auth
RONG_AUTH

_LOG_ARCHIVE_TR? :? log archive trace pids parameter
ACE_PIDS

_LOG_BLOCKS_DUR? :? log block images when changed during backup
ING_BACKUP

_LOG_BUFFERS_CO? :? corrupt redo buffers before write
RRUPT

_LOG_BUFFERS_DE? :? debug redo buffers (slows things down)
BUG

_LOG_BUFFER_COA? :? Coalescing log buffers for log writes
LESCE

_LOG_CHECKPOINT? :? # redo blocks to verify after checkpoint
_RECOVERY_CHECK

_LOG_COMMITTIME? :? Log commit-time block cleanout
_BLOCK_CLEANOUT

_LOG_DELETION_P? :? archivelog deletion policy for mandatory/all
OLICY?????????????? destination

_LOG_EVENT_QUEU? :? number of the log writer event queues
ES

_LOG_FILE_SYNC_? :? Log file sync timeout (centiseconds)
TIMEOUT

_LOG_MAX_OPTIMI? :? maximum number of threads to which log scan
ZE_THREADS????????? optimization is applied

_LOG_PARALLELIS? :? Enable dynamic strands
M_DYNAMIC

_LOG_PARALLELIS? :? Maximum number of log buffer strands
M_MAX

_LOG_PRIVATE_MU? :? Private strand multiplier for log space preallocation
L

_LOG_PRIVATE_PA? :? Active sessions multiplier to deduce number of private
RALLELISM_MUL?????? strands

_LOG_READ_BUFFE? :? Number of log read buffers for media recovery
RS

_LOG_READ_BUFFE? :? buffer size for reading log files
R_SIZE

_LOG_SIMULTANEO? :? number of simultaneous copies into redo buffer(# of
US_COPIES?????????? copy latches)

_LOG_SPACE_ERRO? :? should we report space errors to alert log
RS

_LOG_SWITCH_TIM? :? Maximum number of seconds redos in the current log
EOUT??????????????? could span

_LOG_UNDO_DF_IN? :? generate marker to log file# that belong to undo
FO????????????????? tablespace

_LOG_WRITER_WOR? :? LGWR worker DLM health-monitoring heartbeat update
KER_DLM_HEARBEA???? frequency (ms)
T_UPDATE_FREQ

_LOG_WRITE_INFO? :? Size of log write info array
_SIZE

_LONGOPS_ENABLE? :? longops stats enabled
D

_LONG_BCAST_ACK? :? threshold for long bcast ack warning messages in ms
_WARNING_THRESH
OLD

_LONG_LOG_WRITE? :? threshold for long log write warning messages in ms
_WARNING_THRESH
OLD

_LOWRES_DRIFT_A? :? allowed lowres timer drift for VKTM
LLOWED_SEC

_LOW_SERVER_THR? :? low server thresholds
ESHOLD

_LTC_TRACE?????? :? tracing level for load table conventional
_LTHREAD_CLEANU? :? interval for cleaning lightweight threads in secs
P_INTV_SECS

_LTHREAD_CLNUP_? :? timeout after hard killing operation for lthread to
HK_WAIT_SECS??????? exit

_LTHREAD_CLNUP_? :? wait timeout for PMON between soft kill and hard kill
PMON_SOFTKILL_W???? of lthreads
AIT_SECS

_LTHREAD_CLNUP_? :? timeout for spawner between soft kill and hard kill of
SPAWNER_SK_WAIT???? lthreads
_SECS

_LTHREAD_DEBUG?? :? Enable Debugging mode for lightweight threads
_LTHREAD_ENABLE? :? Enable lightweight threads
D

_LTHREAD_MAX_SP? :? maximum time interval a spawner will wait for a lthread
AWN_TIME_CSECS????? to get ready

_LTHREAD_SPAWN_? :? time interval for a spawner to check for spawnee to get
CHECK_INTV_MS?????? ready

_LTHREAD_STEP_D? :? Enable Step wise Debugging mode for lightweight threads
EBUGGING

_MAIN_DEAD_PROC? :? PMON main dead process scan interval (in seconds)
ESS_SCAN_INTERV
AL

_MASTER_DIRECT_? :? direct sends for messages from master (DFS)
SENDS

_MAV_REFRESH_CO? :? refresh materialized views using consistent read
NSISTENT_READ?????? snapshot

_MAV_REFRESH_DO? :? materialized view MAV refreshes avoid double counting
UBLE_COUNT_PREV
ENTED

_MAV_REFRESH_OP? :? optimizations during refresh of materialized views
T

_MAV_REFRESH_UN? :? # tables for union all expansion during materialized
IONALL_TABLES?????? view refresh

_MAX_AQ_PERSIST? :? max aq persistent queue memory
ENT_QUEUE_MEMOR
Y

_MAX_ASYNC_WAIT? :? Switchover wait time for async LNS to catch up in
_FOR_CATCH_UP?????? seconds

_MAX_CLIENTS_PE? :? maximum number of clients per emon
R_EMON

_MAX_CR_ROLLBAC? :? Maximum number of CR? rollbacks per block (LMS)
KS

_MAX_DATA_TRANS? :? Maximum size of data transfer cache
FER_CACHE_SIZE

_MAX_DEFER_GRAN? :? Maximum deferred granules transferred by MMAN atonce
_XFER_ATONCE

_MAX_EXPONENTIA? :? max sleep during exponential backoff
L_SLEEP

_MAX_FILESTAT_T? :? maximum number of file stat tries
RIES

_MAX_FSU_SEGMEN? :? Maximum segments to track for fast space usage
TS

_MAX_FSU_STALE_? :? Allowed space usage staleness in seconds
TIME

_MAX_INCIDENT_F? :? Maximum size (in KB,MB,GB,Blocks) of incident dump
ILE_SIZE??????????? file

_MAX_IO_SIZE???? :? Maximum I/O size in bytes for sequential file accesses
_MAX_KCNIBR_RAN? :? Max number of nonlogged data block ranges
GES

_MAX_LARGEPAGE_? :? Maximum number of seconds to spend on largepage
ALLOC_TIME_SECS???? allocation

_MAX_LARGE_IO??? :? IORM:max number of large I/O’s to issue
_MAX_LNS_SHUTDO? :? Maximum time spent by LNS to archive last log during
WN_ARCHIVAL_TIM???? shutdown
E

_MAX_LOG_WRITE_? :? Maximum I/O parallelism within a log write (auto=0)
IO_PARALLELISM

_MAX_LOG_WRITE_? :? Maximum parallelism within a log write (auto=0)
PARALLELISM

_MAX_OUTSTANDIN? :? Maximum number of outstanding redo log writes
G_LOG_WRITES

_MAX_PENDING_SC? :? maximum number of pending SCN broadcasts
N_BCASTS

_MAX_PROTOCOL_S? :? Max occurrence protocols supported in a process
UPPORT

_MAX_QUEUED_REP? :? Maximum number of report requests that can be queued in
ORT_REQUESTS??????? a list

_MAX_REASONABLE? :? Max reasonable SCN rate
_SCN_RATE

_MAX_REPORT_FLU? :? Max no of report requests that can be flushed per cycle
SHES_PERCYCLE

_MAX_RWGS_GROUP? :? maximum no of groupings on materialized views
INGS

_MAX_SERVICES??? :? maximum number of database services
_MAX_SHRINK_OBJ? :? number of segments for which shrink stats will be
_STATS????????????? maintained

_MAX_SLEEP_HOLD? :? max time to sleep while holding a latch
ING_LATCH

_MAX_SMALL_IO??? :? IORM:max number of small I/O’s to issue
_MAX_SPACEBG_MS? :? maximum space management interrupt message throttling
GS_PERCENTAGE

_MAX_SPACEBG_SL? :? maximum space management background slaves
AVES

_MAX_SPACEBG_TA? :? maximum space management background tasks
SKS

_MAX_STRING_SIZ? :? controls error checking for the max_string_size
E_BYPASS??????????? parameter

_MAX_SYS_NEXT_E? :? Dictionary managed SYSTEM tablespace maximum next
XTENT?????????????? extent size in MB (allowed range [16-4095],0 if
unlimited)

_MEDIA_RECOVERY? :? media recovery block read batch
_READ_BATCH

_MEMORY_BROKER_? :? memory broker num stat entries
LOG_STAT_ENTRIE
S

_MEMORY_BROKER_? :? Marginal Utility threshold pct for bc
MARGINAL_UTILIT
Y_BC

_MEMORY_BROKER_? :? Marginal Utility threshold pct for sp
MARGINAL_UTILIT
Y_SP

_MEMORY_BROKER_? :? memory broker allow policy to shrink shared pool
SHRINK_HEAPS

_MEMORY_BROKER_? :? memory broker allow policy to shrink java pool
SHRINK_JAVA_HEA
PS

_MEMORY_BROKER_? :? memory broker allow policy to shrink streams pool
SHRINK_STREAMS_
POOL

_MEMORY_BROKER_? :? memory broker policy to timeout shrink shared/java pool
SHRINK_TIMEOUT

_MEMORY_BROKER_? :? memory broker statistics gathering interval for auto
STAT_INTERVAL?????? sga

_MEMORY_CHECKIN? :? check inuse time interval
USE_TIMEINTV

_MEMORY_IMM_MOD? :? Allow immediate mode without sga/memory target
E_WITHOUT_AUTOS
GA

_MEMORY_INITIAL? :? Initial default sga target percentage with memory
_SGA_SPLIT_PERC???? target

_MEMORY_MANAGEM? :? trace memory management activity
ENT_TRACING

_MEMORY_MAX_TGT? :? counts the times checker increments memory target
_INC_CNT

_MEMORY_MGMT_FA? :? always fail immediate mode request
IL_IMMREQ

_MEMORY_MGMT_IM? :? time in seconds to time out immediate mode request
MREQ_TIMEOUT

_MEMORY_NOCANCE? :? do not cancel deferred sga reqs with auto-memory
L_DEFSGAREQ

_MEMORY_SANITY_? :? partial granule sanity check
CHECK

_MEM_ANNOTATION? :? private memory annotation collection level
_PR_LEV

_MEM_ANNOTATION? :? memory annotation pre-allocation scaling
_SCALE

_MEM_ANNOTATION? :? shared memory annotation collection level
_SH_LEV

_MEM_ANNOTATION? :? memory annotation in-memory store
_STORE

_MEM_STD_EXTENT? :? standard extent size for fixed-size-extent heaps
_SIZE

_MESSAGES??????? :? message queue resources – dependent on # processes & #
buffers

_MGD_RCV_HANDLE? :? Managed recovery handle orphan datafile situation
_ORPHAN_DATAFIL
ES

_MIDTIER_AFFINI? :? cluster wait precentage threshold to enter affinity
TY_CLUSWAIT_PRC
_THRESHOLD

_MIDTIER_AFFINI? :? goodness gradient threshold to dissolve affinity
TY_GOODNESS_THR
ESHOLD

_MINFREE_PLUS??? :? max percentage of block space + minfree before we mark
block full

_MINIMAL_STATS_? :? prohibit stats aggregation at compile/partition
AGGREGATION???????? maintenance time

_MINIMUM_BLOCKS? :? minimum number freeable blocks for shrink to be present
_TO_SHRINK

_MINIMUM_DB_FLA? :? Minimum flashback retention
SHBACK_RETENTIO
N

_MINIMUM_EXTENT? :? minimum number freeable extents for shrink to be
S_TO_SHRINK???????? present

_MIN_TIME_BETWE? :? minimum time between PSP0 diagnostic used for flow
EN_PSP0_DIAG_SE???? control
CS

_MIRROR_REDO_BU? :? Save buffers for debugging redo corruptions
FFERS

_MMV_QUERY_REWR? :? allow rewrites with multiple MVs and/or base tables
ITE_ENABLED

_MODIFY_COLUMN_? :? allow ALTER TABLE MODIFY(column) to violate index key
INDEX_UNUSABLE????? length limit

_MODULE_ACTION_? :? Use module and action old length parameter
OLD_LENGTH

_MPMT_ENABLED??? :? MPMT mode enabled
_MPMT_ENABLED_B? :? mpmt enabled backgrounds
ACKGROUNDS

_MPMT_FG_ENABLE? :? MPMT mode foreground enabled
D

_MPMT_PROCS_PER? :? max procs per osp
_OSP

_MULTIPLE_INSTA? :? use multiple instances for media recovery
NCE_RECOVERY

_MULTI_INSTANCE? :? force multi instance parallel recovery
_PMR

_MULTI_JOIN_KEY? :? TRUE iff multi-join-key table lookup prefetch is
_TABLE_LOOKUP?????? enabled

_MULTI_TRANSACT? :? reduce SGA memory use during create of a partitioned
ION_OPTIMIZATIO???? table
N_ENABLED

_MUTEX_SPIN_COU? :? Mutex spin count
NT

_MUTEX_WAIT_SCH? :? Mutex wait scheme
EME

_MUTEX_WAIT_TIM? :? Mutex wait time
E

_MV_ADD_LOG_PLA? :? add log placeholder
CEHOLDER

_MV_CLEANUP_ORP? :? cleanup orphaned materialized view metadata
HANED_METADATA

_MV_COMPLETE_RE? :? use conventional INSERTs for MV complete refresh
FRESH_CONVENTIO
NAL

_MV_DEFERRED_NO? :? avoid build deferred MV log age validate
_LOG_AGE_VAL

_MV_EXPRESSION_? :? MV expression extend size
EXTEND_SIZE

_MV_GENERALIZED? :? enable/disable new algorithm for MJV with generalized
_OJ_REFRESH_OPT???? outer joins

_MV_REFRESH_ANA? :? what percent to analyze after complete/PCT refresh
_MV_REFRESH_COS? :? refresh decision based on cost or on rules
TING

_MV_REFRESH_DEL? :? delta mv as fractional percentage of size of mv
TA_FRACTION

_MV_REFRESH_ENH? :? enable enhanced detection of DML types from MV log
ANCED_DML_DETEC
TION

_MV_REFRESH_EUT? :? refresh materialized views using EUT(partition)-based
algorithm

_MV_REFRESH_FOR? :? force materialized view refreshes to use parallel query
CE_PARALLEL_QUE
RY

_MV_REFRESH_INS? :? materialized view refresh using insert no append
ERT_NO_APPEND

_MV_REFRESH_NEW? :? materialized view MV refresh new setup disabling
_SETUP_DISABLED

_MV_REFRESH_NO_? :? avoid index rebuild? as part of the MV refresh
IDX_REBUILD

_MV_REFRESH_PKF? :? control MV refresh based on the assumption of PK-FK
K_DATA_UNITS_OP???? data units
T

_MV_REFRESH_PKF? :? control MV refresh based on the use of PK-FK
K_RELATIONSHIP_???? relationships
OPT

_MV_REFRESH_REB? :? minimum percentage change required in MV to force an
UILD_PERCENTAGE???? indexrebuild

_MV_REFRESH_SEL? :? create materialized views with selections and fast
ECTIONS???????????? refresh

_MV_REFRESH_UPD? :? materialized view refresh using update analysis
ATE_ANALYSIS

_MV_REFRESH_USE? :? use hash_sj hint in queries
_HASH_SJ

_MV_REFRESH_USE? :? use no_merge hint in queries
_NO_MERGE

_MV_REFRESH_USE? :? pass cardinality hints to refresh queries
_STATS

_MV_REFSCHED_TI? :? proportionality constant for dop vs. time in MV refresh
MEINCR

_MV_ROLLING_INV? :? create/alter mv uses rolling cursor invalidation
instead of immediate

_MWIN_SCHEDULE?? :? Enable/disable Maintenance Window Schedules
_NAMESERVICE_CO? :? NameService Consistency check switch
NSISTENCY_CHECK

_NCHAR_IMP_CNV?? :? NLS allow Implicit Conversion between CHAR and NCHAR
_NCHAR_IMP_CONV? :? should implicit conversion bewteen clob and nclob be
allowed

_NCMB_READAHEAD? :? enable multi-block readahead for an index scan
_ENABLED

_NCMB_READAHEAD? :? turn on multi-block readahead tracing
_TRACING

_NCOMP_SHARED_O? :? native compilation shared objects dir
BJECTS_DIR

_NESTED_LOOP_FU? :? nested loop fudge
DGE

_NESTED_MV_FAST? :? nested MV refresh fast on commit allowed
_ONCOMMIT_ENABL
ED

_NET_TIMEOUT_LA? :? NET_TIMEOUT latency
TENCY

_NEWSORT_ENABLE? :? controls whether new sorts can be used as system sort
D

_NEWSORT_ORDERE? :? controls when new sort avoids sorting ordered input
D_PCT

_NEWSORT_TYPE??? :? specifies options for the new sort algorithm
_NEW_INITIAL_JO? :? enable initial join orders based on new ordering
IN_ORDERS?????????? heuristics

_NEW_SORT_COST_? :? enables the use of new cost estimate for sort
ESTIMATE

_NINETEENTH_SPA? :? nineteenth spare parameter – string
RE_PARAMETER

_NINTH_SPARE_PA? :? ninth spare parameter – integer
RAMETER

_NLJ_BATCHING_A? :? FAE flag type set after restoring to IO batching buffer
E_FLAG

_NLJ_BATCHING_E? :? enable batching of the RHS IO in NLJ
NABLED

_NLJ_BATCHING_M? :? enable exceptions for buffer cache misses
ISSES_ENABLED

_NLS_PARAMETER_? :? enables or disables updates to v$parameter whenever an
SYNC_ENABLED??????? alter session statement modifies various nls parameters

_NOLOGGING_KCNB? :? Number of nologging buffer hash buckets
UF_HASH_BUCKETS

_NOLOGGING_KCNB? :? Number of nologging buffer hash latches
UF_HASH_LATCHES

_NOLOGGING_LOAD? :? Nologging standby: direct load buffer size
_SLOTSZ

_NOLOGGING_SDCL? :? Nologging standby append sdcl wait time
_APPEND_WAIT

_NOLOGGING_SEND? :? Nologging standby: outstanding send buffer ratio
BUF_RATIO

_NOLOGGING_TXN_? :? Nologging standby transaction commit wait time
CMT_WAIT

_NONCDB_TO_PDB?? :? converting a non-cdb to a pdb
_NOSEG_FOR_UNUS? :? no segments for unusable indexes if set to TRUE
ABLE_INDEX_ENAB
LED

_NOTIFY_CRS????? :? notify cluster ready services of startup and shutdown
_NO_OBJECTS????? :? no object features are used
_NO_OR_EXPANSIO? :? OR expansion during optimization disabled
N

_NO_RECOVERY_TH? :? no recovery through this resetlogs operation
ROUGH_RESETLOGS

_NO_SMALL_FILE?? :? Not to apply new extent scheme for small file temp
spaces

_NO_STALE_JOINB? :? No joinbacks if mv is stale
ACK_REWRITE

_NS_MAX_FLUSH_W? :? Flush wait time for NetServer to flush oustanding
T?????????????????? writes

_NS_MAX_SEND_DE? :? Data Loss Time Bound for NetServer
LAY

_NUMA_BUFFER_CA? :? Configure NUMA buffer cache stats
CHE_STATS

_NUMA_INSTANCE_? :? Set of nodes that this instance should run on
MAPPING

_NUMA_POOL_SIZE? :? aggregate size in bytes of NUMA pool
_NUMA_SHIFT_ENA? :? Enable NUMA shift
BLED

_NUMA_SHIFT_VAL? :? user defined value for numa nodes shift
UE

_NUMA_TRACE_LEV? :? numa trace event
EL

_NUMBER_CACHED_? :? maximum number of cached attributes per instance
ATTRIBUTES

_NUMBER_CACHED_? :? maximum number of cached group memberships
GROUP_MEMBERSHI
PS

_NUMBER_GROUP_M? :? maximum number of group memberships per cache line
EMBERSHIPS_PER_
CACHE_LINE

_NUM_LONGOP_CHI? :? number of child latches for long op array
LD_LATCHES

_OBJECT_NUMBER_? :? Object number cache size
CACHE_SIZE

_OBJECT_REUSE_B? :? if 1 or higher,handle object reuse
AST

_OBJECT_STATIST? :? enable the object level statistics collection
ICS

_OBJECT_STATS_M? :? Maximum number of entries to be tracked per stat
AX_ENTRIES

_OBJ_CKPT_TRACI? :? Enable object checkpoint tracing
NG

_ODCI_AGGREGATE? :? trade speed for space in user-defined aggregation
_SAVE_SPACE

_OFFLINE_ROLLBA? :? offline undo segment list
CK_SEGMENTS

_OGMS_HOME?????? :? GMS home directory
_OLAPI_HISTORY_? :? enable olapi history retention
RETENTION

_OLAPI_IFACE_OB? :? enable olapi interface object history collection
JECT_HISTORY

_OLAPI_IFACE_OB? :? enable olapi interface object history retention
JECT_HISTORY_RE
TENTION

_OLAPI_IFACE_OP? :? enable olapi interface operation history retention
ERATION_HISTORY
_RETENTION

_OLAPI_INTERFAC? :? enable olapi interface operation history collection
E_OPERATION_HIS
TORY

_OLAPI_MEMORY_O? :? enable olapi memory alloc/free history collection
PERATION_HISTOR
Y

_OLAPI_MEMORY_O? :? enable olapi memory alloc/free history collection
PERATION_HISTOR???? pausing
Y_PAUSE_AT_SEQN
O

_OLAPI_MEMORY_O? :? enable olapi memory operation history retention
PERATION_HISTOR
Y_RETENTION

_OLAPI_SESSION_? :? enable olapi session history collection
HISTORY

_OLAPI_SESSION_? :? enable olapi session history retention
HISTORY_RETENTI
ON

_OLAP_ADV_COMP_? :? do additional predicate stats analysis for AW rowsource
STATS_CC_PRECOM
P

_OLAP_ADV_COMP_? :? do additional predicate stats analysis for AW rowsource
STATS_MAX_ROWS

_OLAP_AGGREGATE? :? OLAP Aggregate max buffer size
_BUFFER_SIZE

_OLAP_AGGREGATE? :? OLAP Aggregate debug flags
_FLAGS

_OLAP_AGGREGATE? :? OLAP Aggregate function cache enabler
_FUNCTION_CACHE
_ENABLED

_OLAP_AGGREGATE? :? OLAP Aggregate max thread tuples creation
_MAX_THREAD_TUP
LES

_OLAP_AGGREGATE? :? OLAP Aggregate min buffer size
_MIN_BUFFER_SIZ
E

_OLAP_AGGREGATE? :? OLAP Aggregate minimum cardinality of dimensions for
_MIN_THREAD_STA???? thread
TUS

_OLAP_AGGREGATE? :? OLAP Aggregate Multi-path Hierarhies enabled
_MULTIPATH_HIER

_OLAP_AGGREGATE? :? OLAP Aggregate status array usage threshold
_STATLEN_THRESH

_OLAP_AGGREGATE? :? OLAP Aggregate max worklists generated at once
_WORKLIST_MAX

_OLAP_AGGREGATE? :? OLAP Aggregate max work parents
_WORK_PER_THREA
D

_OLAP_ALLOCATE_? :? OLAP Allocate Errorlog Format
ERRORLOG_FORMAT

_OLAP_ALLOCATE_? :? OLAP Allocate Errorlog Header format
ERRORLOG_HEADER

_OLAP_ANALYZE_M? :? OLAP DML ANALYZE command max cells to analyze
AX

_OLAP_CONTINUOU? :? OLAP logging definition
S_TRACE_FILE

_OLAP_DBGOUTFIL? :? OLAP DbgOutfile copy output to event log (tracefile)
E_ECHO_TO_EVENT
LOG

_OLAP_DIMENSION? :? OLAP Dimension In-Core Hash Table Force
_COREHASH_FORCE

_OLAP_DIMENSION? :? OLAP Dimension In-Core Hash Table Large Threshold
_COREHASH_LARGE

_OLAP_DIMENSION? :? OLAP Dimension In-Core Hash Table Pressure Threshold
_COREHASH_PRESS
URE

_OLAP_DIMENSION? :? OLAP Dimension In-Core Hash Table Maximum Memory Use
_COREHASH_SIZE

_OLAP_EIF_EXPOR? :? OLAP EIF Export BLOB size
T_LOB_SIZE

_OLAP_LMGEN_DIM? :? Limitmap generator dimension column size
_SIZE

_OLAP_LMGEN_MEA? :? Limitmap generator measure column size
S_SIZE

_OLAP_OBJECT_HA? :? OLAP Object Hash Table Class
SH_CLASS

_OLAP_PAGE_POOL? :? OLAP Page Pool Expand Rate
_EXPAND_RATE

_OLAP_PAGE_POOL? :? OLAP Page Pool High Watermark
_HI

_OLAP_PAGE_POOL? :? OLAP Page Pool Hit Target
_HIT_TARGET

_OLAP_PAGE_POOL? :? OLAP Page Pool Low Watermark
_LOW

_OLAP_PAGE_POOL? :? OLAP Page Pool Pressure Threshold
_PRESSURE

_OLAP_PAGE_POOL? :? OLAP Page Pool Shrink Rate
_SHRINK_RATE

_OLAP_PARALLEL_? :? OLAP parallel update server count
UPDATE_SERVER_N
UM

_OLAP_PARALLEL_? :? OLAP parallel update threshold for number of small
UPDATE_SMALL_TH???? pagespaces
RESHOLD

_OLAP_PARALLEL_? :? OLAP parallel update threshold in pages
UPDATE_THRESHOL
D

_OLAP_ROW_LOAD_? :? OLAP Row Load Time Precision
TIME_PRECISION

_OLAP_SESSCACHE? :? OLAP Session Cache knob
_ENABLED

_OLAP_SORT_BUFF? :? OLAP Sort Buffer Size Percentage
ER_PCT

_OLAP_SORT_BUFF? :? OLAP Sort Buffer Size
ER_SIZE

_OLAP_STATBOOL_? :? OLAP Status Boolean max incore bits
COREBITS

_OLAP_STATBOOL_? :? OLAP Status Boolean CBM threshold
THRESHOLD

_OLAP_TABLE_FUN? :? Specify TRUE to output OLAP table function timed
CTION_STATISTIC???? statistics trace
S

_OLAP_WRAP_ERRO? :? Wrap error messages to OLAP outfile
RS

_OLD_CONNECT_BY? :? enable/disable old connect by
_ENABLED

_OLD_EXTENT_SCH? :? Revert to old extent allocation
EME

_OLS_CLEANUP_TA? :? Clean up unnecessary entries in OLS sessinfo table
SK

_OLTP_COMPRESSI? :? oltp compression enabled
ON

_OLTP_COMPRESSI? :? oltp compression gain
ON_GAIN

_OLTP_COMP_DBG_? :? oltp compression scan debug
SCAN

_OLTP_SPILL????? :? spill rows for oltp compression if loader pga limit is
exceeded

_OMF???????????? :? enable/disable OMF
_OMNI_ENQUEUE_E? :? Enable Omni Enqueue feature (0 = disable,1 = enable on
NABLE?????????????? ASM (default),2 = enable)

_ONESIDE_COLSTA? :? sanity check on default selectivity for like/range
T_FOR_EQUIJOINS???? predicate

_ONLINE_CTAS_DI? :? controls dumping diagnostic information for online ctas
AG

_ONLINE_PATCH_D? :? disable check for function on stack for online patches
ISABLE_STACK_CH
ECK

_OPS_PER_SEMOP?? :? the exact number of operations per semop system call
_OPTIMIZER_ADAP? :? optimizer adaptive cursor sharing
TIVE_CURSOR_SHA
RING

_OPTIMIZER_ADAP? :? enable adaptive plans
TIVE_PLANS

_OPTIMIZER_ADAP? :? internal controls for adaptive plans
TIVE_PLAN_CONTR
OL

_OPTIMIZER_ADJU? :? adjust selectivity for null values
ST_FOR_NULLS

_OPTIMIZER_ADS_? :? maximum number of tables in a join under ADS
MAX_TABLE_COUNT

_OPTIMIZER_ADS_? :? maximum time limit (seconds) under ADS
TIME_LIMIT

_OPTIMIZER_ADS_? :? use result cache for ADS queries
USE_RESULT_CACH
E

_OPTIMIZER_ANSI? :? optimization of left/full ansi-joins and lateral views
_JOIN_LATERAL_E
NHANCE

_OPTIMIZER_ANSI? :? re-architecture of ANSI left,right,and full outer
_REARCHITECTURE???? joins

_OPTIMIZER_AUTO? :? enable/disable auto stats collection job
STATS_JOB

_OPTIMIZER_AW_J? :? Enables AW Join Push optimization
OIN_PUSH_ENABLE
D

_OPTIMIZER_AW_S? :? Enables statistcs on AW olap_table table function
TATS_ENABLED

_OPTIMIZER_BATC? :? enable table access by ROWID IO batching
H_TABLE_ACCESS_
BY_ROWID

_OPTIMIZER_BETT? :? enable improved costing of index access using
ER_INLIST_COSTI???? in-list(s)
NG

_OPTIMIZER_BLOC? :? standard block size used by optimizer
K_SIZE

_OPTIMIZER_CACH? :? cost with cache statistics
E_STATS

_OPTIMIZER_CART? :? optimizer cartesian join enabled
ESIAN_ENABLED

_OPTIMIZER_CBQT? :? cost factor for cost-based query transformation
_FACTOR

_OPTIMIZER_CBQT? :? disable cost based transformation query size
_NO_SIZE_RESTRI???? restriction
CTION

_OPTIMIZER_CEIL? :? CEIL cost in CBO
_COST

_OPTIMIZER_CLUS? :? enable/disable the cluster by rowid feature
TER_BY_ROWID

_OPTIMIZER_CLUS? :? internal control for cluster by rowid feature mode
TER_BY_ROWID_CO
NTROL

_OPTIMIZER_COAL? :? consider coalescing of subqueries optimization
ESCE_SUBQUERIES

_OPTIMIZER_COMP? :? enable selectivity estimation for builtin functions
LEX_PRED_SELECT
IVITY

_OPTIMIZER_COMP? :? force index stats collection on index creation/rebuild
UTE_INDEX_STATS

_OPTIMIZER_CONN? :? use cost-based transformation for whr clause in connect
ECT_BY_CB_WHR_O???? by
NLY

_OPTIMIZER_CONN? :? combine no filtering connect by and start with
ECT_BY_COMBINE_
SW

_OPTIMIZER_CONN? :? use cost-based transformation for connect by
ECT_BY_COST_BAS
ED

_OPTIMIZER_CONN? :? allow connect by to eliminate duplicates from input
ECT_BY_ELIM_DUP
S

_OPTIMIZER_CORR? :? force correct computation of subquery selectivity
ECT_SQ_SELECTIV
ITY

_OPTIMIZER_COST? :? enables cost-based query transformation
_BASED_TRANSFOR
MATION

_OPTIMIZER_COST? :? enables? costing of filter predicates in IO cost model
_FILTER_PRED

_OPTIMIZER_COST? :? add cost of generating result set when #rows per key >
_HJSMJ_MULTIMAT???? 1
CH

_OPTIMIZER_COST? :? optimizer cost model
_MODEL

_OPTIMIZER_CUBE? :? enable cube join
_JOIN_ENABLED

_OPTIMIZER_DEGR? :? force the optimizer to use the same degree of
EE????????????????? parallelism

_OPTIMIZER_DIM_? :? use join selectivity in choosing star transformation
SUBQ_JOIN_SEL?????? dimensions

_OPTIMIZER_DISA? :? disable star transformation sanity checks
BLE_STRANS_SANI
TY_CHECKS

_OPTIMIZER_DIST? :? Transforms Distinct Aggregates to non-distinct
INCT_AGG_TRANSF???? aggregates
ORM

_OPTIMIZER_DIST? :? Eliminates redundant SELECT DISTNCT’s
INCT_ELIMINATIO
N

_OPTIMIZER_DIST? :? consider distinct placement optimization
INCT_PLACEMENT

_OPTIMIZER_DSDI? :? controls optimizer usage of dynamic sampling directives
R_USAGE_CONTROL

_OPTIMIZER_DYN_? :? number of blocks for optimizer dynamic sampling
SMP_BLKS

_OPTIMIZER_ELIM? :? optimizer filtering join elimination enabled
INATE_FILTERING
_JOIN

_OPTIMIZER_ENAB? :? use improved density computation for selectivity
LE_DENSITY_IMPR???? estimation
OVEMENTS

_OPTIMIZER_ENAB? :? use extended statistics for selectivity estimation
LE_EXTENDED_STA
TS

_OPTIMIZER_ENAB? :? consider table lookup by nl transformation
LE_TABLE_LOOKUP
_BY_NL

_OPTIMIZER_ENHA? :? push filters before trying cost-based query
NCED_FILTER_PUS???? transformation
H

_OPTIMIZER_EXTE? :? optimizer extended cursor sharing
NDED_CURSOR_SHA
RING

_OPTIMIZER_EXTE? :? optimizer extended cursor sharing for relational
NDED_CURSOR_SHA???? operators
RING_REL

_OPTIMIZER_EXTE? :? controls the optimizer usage of extended stats
NDED_STATS_USAG
E_CONTROL

_OPTIMIZER_EXTE? :? join pred pushdown on group-by,distinct,
ND_JPPD_VIEW_TY???? semi-/anti-joined view
PES

_OPTIMIZER_FALS? :? optimizer false predicate pull up transformation
E_FILTER_PRED_P
ULLUP

_OPTIMIZER_FAST? :? use fast algorithm to traverse predicates for physical
_ACCESS_PRED_AN???? optimizer
ALYSIS

_OPTIMIZER_FAST? :? use fast algorithm to generate transitive predicates
_PRED_TRANSITIV
ITY

_OPTIMIZER_FEED? :? controls the optimizer feedback framework
BACK_CONTROL

_OPTIMIZER_FILT? :? use cost-based flter predicate pull up transformation
ER_PRED_PULLUP

_OPTIMIZER_FILT? :? enable/disable filter predicate pushdown
ER_PUSHDOWN

_OPTIMIZER_FKR_? :? Optimizer index bias over FTS/IFFS under first K rows
INDEX_COST_BIAS???? mode

_OPTIMIZER_FORC? :? force CBQT transformation regardless of cost
E_CBQT

_OPTIMIZER_FREE? :? free transformation subheap after each transformation
_TRANSFORMATION
_HEAP

_OPTIMIZER_FULL? :? enable/disable full outer to left outer join conversion
_OUTER_JOIN_TO_
OUTER

_OPTIMIZER_GATH? :? optimizer gather feedback
ER_FEEDBACK

_OPTIMIZER_GATH? :? enable/disable online statistics gathering
ER_STATS_ON_LOA
D

_OPTIMIZER_GENE? :? optimizer generate transitive predicates
RATE_TRANSITIVE
_PRED

_OPTIMIZER_GROU? :? consider group-by placement optimization
P_BY_PLACEMENT

_OPTIMIZER_HYBR? :? enable hybrid full partition-wise join when TRUE
ID_FPWJ_ENABLED

_OPTIMIZER_IGNO? :? enables the embedded hints to be ignored
RE_HINTS

_OPTIMIZER_IMPR? :? improve table and partial overlap join selectivity
OVE_SELECTIVITY???? computation

_OPTIMIZER_INST? :? force the optimizer to use the specified number of
ANCE_COUNT????????? instances

_OPTIMIZER_INTE? :? interleave join predicate pushdown during CBQT
RLEAVE_JPPD

_OPTIMIZER_INVA? :? time window for invalidation of cursors of analyzed
LIDATION_PERIOD???? objects

_OPTIMIZER_JOIN? :? optimizer join elimination enabled
_ELIMINATION_EN
ABLED

_OPTIMIZER_JOIN? :? use join factorization transformation
_FACTORIZATION

_OPTIMIZER_JOIN? :? controls the optimizer join order search algorithm
_ORDER_CONTROL

_OPTIMIZER_JOIN? :? enable/disable sanity check for multi-column join
_SEL_SANITY_CHE???? selectivity
CK

_OPTIMIZER_MAX_? :? optimizer maximum join permutations per query block
PERMUTATIONS

_OPTIMIZER_MIN_? :? set minimum cached blocks
CACHE_BLOCKS

_OPTIMIZER_MJC_? :? enable merge join cartesian
ENABLED

_OPTIMIZER_MODE? :? force setting of optimizer mode for user recursive SQL
_FORCE????????????? also

_OPTIMIZER_MULT? :? generate and run plans using several compilation
IPLE_CENV?????????? environments

_OPTIMIZER_MULT? :? control what to report in trace file when run in
IPLE_CENV_REPOR???? multi-plan mode
T

_OPTIMIZER_MULT? :? control the types of statements that are run in
IPLE_CENV_STMT????? multi-plan mode

_OPTIMIZER_MULT? :? consider join-predicate pushdown that requires
I_LEVEL_PUSH_PR???? multi-level pushdown to base table
ED

_OPTIMIZER_MULT? :? allows multiple tables on the left of outerjoin
I_TABLE_OUTERJO
IN

_OPTIMIZER_NATI? :? execute full outer join using native implementaion
VE_FULL_OUTER_J
OIN

_OPTIMIZER_NEST? :? number of groups above which we use nested rollup exec
ED_ROLLUP_FOR_G???? for gset
SET

_OPTIMIZER_NEW_? :? compute join cardinality using non-rounded input values
JOIN_CARD_COMPU
TATION

_OPTIMIZER_NULL? :? enables null-accepting semijoin
_ACCEPTING_SEMI
JOIN

_OPTIMIZER_NULL? :? null-aware antijoin parameter
_AWARE_ANTIJOIN

_OPTIMIZER_ORDE? :? Eliminates order bys from views before query
R_BY_ELIMINATIO???? transformation
N_ENABLED

_OPTIMIZER_OR_E? :? control or expansion approach used
XPANSION

_OPTIMIZER_OR_E? :? Use subheap for optimizer or-expansion
XPANSION_SUBHEA
P

_OPTIMIZER_OUTE? :? enable/disable outer to inner join conversion
R_JOIN_TO_INNER

_OPTIMIZER_OUTE? :? Enable transformation of outer-join to anti-join if
R_TO_ANTI_ENABL???? possible
ED

_OPTIMIZER_PART? :? partial join evaluation parameter
IAL_JOIN_EVAL

_OPTIMIZER_PERC? :? optimizer percent parallel
ENT_PARALLEL

_OPTIMIZER_PERF? :? controls the performance feedback
ORMANCE_FEEDBAC
K

_OPTIMIZER_PROC? :? control the level of processing rates
_RATE_LEVEL

_OPTIMIZER_PROC? :? control the source of processing rates
_RATE_SOURCE

_OPTIMIZER_PURG? :? number of rows to be deleted at each iteration of the
E_STATS_ITERATI???? stats?????????????????? purging process
ON_ROW_COUNT

_OPTIMIZER_PUSH? :? push down distinct from query block to table
_DOWN_DISTINCT

_OPTIMIZER_PUSH? :? use cost-based query transformation for push pred
_PRED_COST_BASE???? optimization
D

_OPTIMIZER_RAND? :? optimizer seed value for random plans
OM_PLAN

_OPTIMIZER_REUS? :? reuse cost annotations during cost-based query
E_COST_ANNOTATI???? transformation
ONS

_OPTIMIZER_ROWN? :? Default value to use for rownum bind
UM_BIND_DEFAULT

_OPTIMIZER_ROWN? :? enable the use of first K rows due to rownum predicate
UM_PRED_BASED_F
KR

_OPTIMIZER_SAVE? :? enable/disable saving old versions of optimizer stats
_STATS

_OPTIMIZER_SEAR? :? optimizer search limit
CH_LIMIT

_OPTIMIZER_SELF? :? account for self-induced caching
_INDUCED_CACHE_
COST

_OPTIMIZER_SKIP? :? enable/disable index skip scan
_SCAN_ENABLED

_OPTIMIZER_SKIP? :? consider index skip scan for predicates with guessed
_SCAN_GUESS???????? selectivity

_OPTIMIZER_SORT? :? enable/disable sort-merge join method
MERGE_JOIN_ENAB
LED

_OPTIMIZER_SORT? :? enable/disable sort-merge join using inequality
MERGE_JOIN_INEQ???? predicates
UALITY

_OPTIMIZER_SQU_? :? enables unnesting of subquery in a bottom-up manner
BOTTOMUP

_OPTIMIZER_STAR? :? optimizer star plan enabled
PLAN_ENABLED

_OPTIMIZER_STAR? :? optimizer star transformation minimum cost
_TRANS_MIN_COST

_OPTIMIZER_STAR? :? optimizer star transformation minimum ratio
_TRANS_MIN_RATI
O

_OPTIMIZER_STAR? :? enable/disable star transformation in with clause
_TRAN_IN_WITH_C???? queries
LAUSE

_OPTIMIZER_STRA? :? allow adaptive pruning of star transformation bitmap
NS_ADAPTIVE_PRU???? trees
NING

_OPTIMIZER_SYST? :? system statistics usage
EM_STATS_USAGE

_OPTIMIZER_TABL? :? consider table expansion transformation
E_EXPANSION

_OPTIMIZER_TRAC? :? optimizer trace parameter
E

_OPTIMIZER_TRAN? :? retain equi-join pred upon transitive equality pred
SITIVITY_RETAIN???? generation

_OPTIMIZER_TRY_? :? try Star Transformation before Join Predicate Push Down
ST_BEFORE_JPPD

_OPTIMIZER_UNDO? :? undo changes to query optimizer
_CHANGES

_OPTIMIZER_UNDO? :? optimizer undo cost change
_COST_CHANGE

_OPTIMIZER_UNNE? :? enables unnesting of every type of subquery
ST_ALL_SUBQUERI
ES

_OPTIMIZER_UNNE? :? Unnesting of correlated set subqueries (TRUE/FALSE)
ST_CORR_SET_SUB
Q

_OPTIMIZER_UNNE? :? Unnesting of disjunctive subqueries (TRUE/FALSE)
ST_DISJUNCTIVE_
SUBQ

_OPTIMIZER_UNNE? :? enables unnesting of of scalar subquery
ST_SCALAR_SQ

_OPTIMIZER_USE_? :? use rewritten star transformation using cbqt framework
CBQT_STAR_TRANS
FORMATION

_OPTIMIZER_USE_? :? optimizer use feedback
FEEDBACK

_OPTIMIZER_USE_? :? use GTT session private statistics
GTT_SESSION_STA
TS

_OPTIMIZER_USE_? :? enable/disable the usage of histograms by the optimizer
HISTOGRAMS

_OPTIMIZER_USE_? :? Enables physical optimizer subheap
SUBHEAP

_OPTIM_ADJUST_F? :? adjust stats for skews across partitions
OR_PART_SKEWS

_OPTIM_DICT_STA? :? enable/disable dictionary stats gathering at db
TS_AT_DB_CR_UPG???? create/upgrade

_OPTIM_ENHANCE_? :? TRUE to enable index [fast] full scan more often
NNULL_DETECTION

_OPTIM_NEW_DEFA? :? improves the way default equijoin selectivity are
ULT_JOIN_SEL??????? computed

_OPTIM_PEEK_USE? :? enable peeking of user binds
R_BINDS

_ORACLE_SCRIPT?? :? Running an Oracle-supplied script
_ORADBG_PATHNAM? :? path of oradbg script
E

_ORADEBUG_CMDS_? :? oradebug commands to execute at instance startup
AT_STARTUP

_ORADEBUG_FORCE? :? force target processes to execute oradebug commands?
_ORDERED_NESTED? :? enable ordered nested loop costing
_LOOP

_ORDERED_SEMIJO? :? enable ordered semi-join subquery
IN

_ORPH_CLN_INTER? :? qmon periodic interval for removed subscriber messages
VAL???????????????? cleanup

_OR_EXPAND_NVL_? :? enable OR expanded plan for NVL/DECODE predicate
PREDICATE

_OSS_SKGXP_UDP_? :? OSSLIB enable[!0]/disable[0] dynamic credit mgmt for
DYNAMIC_CREDIT_???? SKGXP-UDP
MGMT

_OS_SCHED_HIGH_? :? OS high priority level
PRIORITY

_OTHER_WAIT_EVE? :? exclude event names from _other_wait_threshold
NT_EXCLUSION??????? calculations

_OTHER_WAIT_THR? :? threshold wait percentage for event wait class Other
ESHOLD

_OUTLINE_BITMAP? :? BITMAP_TREE hint enabled in outline
_TREE

_PARALLELISM_CO? :? set the parallelism cost fudge factor
ST_FUDGE_FACTOR

_PARALLEL_ADAPT? :? maximum number of users running with default DOP
IVE_MAX_USERS

_PARALLEL_BLACK? :? parallel execution blackbox enabled
BOX_ENABLED

_PARALLEL_BLACK? :? true if blackbox will be allocated in SGA,false if PGA
BOX_SGA

_PARALLEL_BLACK? :? parallel execution blackbox bucket size
BOX_SIZE

_PARALLEL_BROAD? :? enable broadcasting of small inputs to hash and sort
CAST_ENABLED??????? merge joins

_PARALLEL_CLUST? :? max percentage of the global buffer cache to use for
ER_CACHE_PCT??????? affinity

_PARALLEL_CLUST? :? policy used for parallel execution on
ER_CACHE_POLICY???? cluster(ADAPTIVE/CACHED)

_PARALLEL_CONSE? :? conservative parallel statement queuing
RVATIVE_QUEUING

_PARALLEL_CTAS_? :? enable/disable parallel CTAS operation
ENABLED

_PARALLEL_DEFAU? :? default maximum number of instances for parallel query
LT_MAX_INSTANCE
S

_PARALLEL_EXECU? :? Alignment of PX buffers to OS page boundary
TION_MESSAGE_AL
IGN

_PARALLEL_FAKE_? :? fake db-scheduler percent used for testing
CLASS_PCT

_PARALLEL_FAULT? :? total number of faults fault-tolerance will handle
_TOLERANCE_THRE
SHOLD

_PARALLEL_FIXWR? :? Number of buckets for each round of fix write
ITE_BUCKET

_PARALLEL_HEART? :? interval of snapshot to track px msging between
BEAT_SNAPSHOT_I???? instances
NTERVAL

_PARALLEL_HEART? :? maximum number of historical snapshots archived
BEAT_SNAPSHOT_M
AX

_PARALLEL_LOAD_? :? parallel execution load balanced slave allocation
BALANCING

_PARALLEL_LOAD_? :? number of threads to allocate per instance
BAL_UNIT

_PARALLEL_LOAD_? :? diffrence in percentage controlling px load propagation
PUBLISH_THRESHO
LD

_PARALLEL_MIN_M? :? minimum size of shared pool memory to reserve for pq
ESSAGE_POOL???????? servers

_PARALLEL_OPTIM? :? parallel optimization phase when all slaves are local
IZATION_PHASE_F
OR_LOCAL

_PARALLEL_QUEUI? :? parallel statement queuing: max waiting time in queue
NG_MAX_WAITINGT
IME

_PARALLEL_RECOV? :? stop at -position- to step through SMON
ERY_STOPAT

_PARALLEL_REPLA? :? Number of messages for each round of parallel replay
Y_MSG_LIMIT

_PARALLEL_SCALA? :? Parallel scalability criterion for parallel execution
BILITY

_PARALLEL_SERVE? :? idle time before parallel query server dies (in 1/100
R_IDLE_TIME???????? sec)

_PARALLEL_SERVE? :? sleep time between dequeue timeouts (in 1/100ths)
R_SLEEP_TIME

_PARALLEL_SLAVE? :? time(in seconds) to wait before retrying slave
_ACQUISITION_WA???? acquisition
IT

_PARALLEL_STATE? :? parallel statement queuing enabled
MENT_QUEUING

_PARALLEL_SYSPL? :? TRUE to obey force parallel query/dml/ddl under System
S_OBEY_FORCE??????? PL/SQL

_PARALLEL_TIME_? :? unit of work used to derive the degree of parallelism
UNIT??????????????? (in seconds)

_PARALLEL_TXN_G? :? enable parallel_txn hint with updates and deletes
LOBAL

_PARAMETER_TABL? :? parameter table block size
E_BLOCK_SIZE

_PARTIAL_PWISE_? :? enable partial partition-wise join when TRUE
JOIN_ENABLED

_PARTITION_ADVI? :? enables sampling based partitioning validation
SOR_SRS_ACTIVE

_PARTITION_CDB_? :? partitioned cdb view evaluation enabled
VIEW_ENABLED

_PARTITION_LARG? :? Enables large extent allocation for partitioned tables
E_EXTENTS

_PARTITION_VIEW? :? enable/disable partitioned views
_ENABLED

_PART_ACCESS_VE? :? use version numbers to access versioned objects for
RSION_BY_NUMBER???? partitioning

_PART_REDEF_GLO? :? online partition redefinition update global indexes
BAL_INDEX_UPDAT
E

_PASSWORDFILE_E? :? password file enqueue timeout in seconds
NQUEUE_TIMEOUT

_PCT_REFRESH_DO? :? materialized view PCT refreshes avoid double counting
UBLE_COUNT_PREV
ENTED

_PDB_USE_SEQUEN? :? Use sequence cache in PDB mode
CE_CACHE

_PDML_GIM_SAMPL? :? control separation of global index maintenance for PDML
ING

_PDML_GIM_STAGG? :? slaves start on different index when doing index maint
ERED

_PDML_SLAVES_DI? :? slaves start on different partition when doing index
FF_PART???????????? maint

_PERCENT_FLASHB? :? Percent of flashback buffer filled to be considered
ACK_BUF_PARTIAL???? partial full
_FULL

_PGACTX_CAP_STA? :? capture stacks for setting pgactx
CKS

_PGA_LARGE_EXTE? :? PGA large extent size
NT_SIZE

_PGA_LIMIT_CHEC? :? microseconds to wait for over limit confirmation
K_WAIT_TIME

_PGA_LIMIT_DUMP? :? dump PGA summary when signalling ORA-4036
_SUMMARY

_PGA_LIMIT_INTE? :? whether to interrupt smaller eligible processes
RRUPT_SMALLER

_PGA_LIMIT_MIN_? :? bytes of PGA usage below which process will not get
REQ_SIZE??????????? ORA-4036

_PGA_LIMIT_SIMU? :? bytes of physical memory to determine
LATED_PHYSMEM_S???? pga_aggregate_limit with
IZE

_PGA_LIMIT_TARG? :? default percent of pga_aggregate_target for
ET_PERC???????????? pga_aggregate_limit

_PGA_LIMIT_TIME? :? seconds to wait until direct interrupt
_TO_INTERRUPT

_PGA_LIMIT_TIME? :? seconds to wait before treating process as idle
_UNTIL_IDLE

_PGA_LIMIT_TIME? :? seconds to wait before killing session over limit
_UNTIL_KILLED

_PGA_LIMIT_TRAC? :? trace pga_aggregate_limit activity
ING

_PGA_LIMIT_USE_? :? use immediate kill for sessions over limit
IMMEDIATE_KILL

_PGA_LIMIT_WATC? :? percentage of limit to have processes watch
H_PERC

_PGA_LIMIT_WATC? :? bytes of PGA usage at which process will begin watching
H_SIZE????????????? limit

_PGA_MAX_SIZE??? :? Maximum size of the PGA memory for one process
_PING_WAIT_FOR_? :? Wait for log force before block ping
LOG_FORCE

_PIN_TIME_STATI? :? if TRUE collect statistics for how long a current pin
STICS?????????????? is held

_PIVOT_IMPLEMEN? :? pivot implementation method
TATION_METHOD

_PKT_ENABLE????? :? enable progressive kill test
_PKT_PMON_INTER? :? PMON process clean-up interval (cs)
VAL

_PKT_START?????? :? start progressive kill test instrumention
_PLAN_OUTLINE_D? :? explain plan outline data enabled
ATA

_PLAN_VERIFY_IM? :? Performance improvement criterion for evolving plan
PROVEMENT_MARGI???? baselines
N

_PLAN_VERIFY_LO? :? Local time limit to use for an individual plan
CAL_TIME_LIMIT????? verification

_PLSQL_ANON_BLO? :? PL/SQL anonymous block code-type
CK_CODE_TYPE

_PLSQL_CACHE_EN? :? PL/SQL Function Cache Enabled
ABLE

_PLSQL_DUMP_BUF? :? conditions upon which the PL/SQL circular buffer is
FER_EVENTS????????? dumped

_PLSQL_MAX_STAC? :? PL/SQL maximum stack size
K_SIZE

_PLSQL_MINIMUM_? :? plsql minimum cache hit percentage required to keep
CACHE_HIT_PERCE???? caching active
NT

_PLSQL_NATIVE_F? :? Allocate PL/SQL native frames on the heap if size
RAME_THRESHOLD????? exceeds this value

_PLSQL_NVL_OPTI? :? PL/SQL NVL optimize
MIZE

_PLUGGABLE_DATA? :? Debug flag for pluggable database related operations
BASE_DEBUG

_PMON_DEAD_BLKR? :? rate to check blockers are alive during cleanup (in
S_ALIVE_CHK_RAT???? seconds)
E_SECS

_PMON_DEAD_BLKR? :? max blockers to check during cleanup
S_MAX_BLKRS

_PMON_DEAD_BLKR? :? max attempts per blocker while checking dead blockers
S_MAX_CLEANUP_A
TTEMPTS

_PMON_DEAD_BLKR? :? rate to scan for dead blockers during cleanup (in
S_SCAN_RATE_SEC???? seconds)
S

_PMON_ENABLE_DE? :? look for dead blockers during PMON cleanup
AD_BLKRS

_PMON_LOAD_CONS? :? server load balancing constants (S,P,D,I,L,C,M)
TANTS

_PMON_MAX_CONSE? :? PMON max consecutive posts in main loop
C_POSTS

_POST_WAIT_QUEU? :? Post Wait Queues – Num Dynamic Queues
ES_DYNAMIC_QUEU
ES

_POST_WAIT_QUEU? :? Post Wait Queues – Num Per Class
ES_NUM_PER_CLAS
S

_PQQ_DEBUG_TXN_? :? pq queuing transaction active
ACT

_PQQ_ENABLED???? :? Enable Resource Manager based Parallel Statement
Queuing

_PRECOMPUTE_GID? :? precompute gid values and copy them before returning a
_VALUES???????????? row

_PREDICATE_ELIM? :? allow predicate elimination if set to TRUE
INATION_ENABLED

_PRED_MOVE_AROU? :? enables predicate move-around
ND

_PRED_PUSH_CDB_? :? predicate pushdown enabled for CDB views
VIEW_ENABLED

_PREFERED_STAND? :? standby db_unique_name prefered for krb operations
BY

_PRESCOMM??????? :? presume commit of IMU transactions
_PRE_REWRITE_PU? :? push predicates into views before rewrite
SH_PRED

_PRINT_INMEM_HE? :? print inmem ilm heatmap
ATMAP

_PRINT_REFRESH_? :? enable dbms_output of materialized view refresh
SCHEDULE??????????? schedule

_PRINT_STAT_SEG? :? print ilm statistics segment
MENT

_PRIVATE_MEMORY? :? Start address of large extent memory segment
_ADDRESS

_PROJECTION_PUS? :? projection pushdown
HDOWN

_PROJECTION_PUS? :? level for projection pushdown debugging
HDOWN_DEBUG

_PROJECT_VIEW_C? :? enable projecting out unreferenced columns of a view
OLUMNS

_PROP_OLD_ENABL? :? Shift to pre 11g propagation behaviour
ED

_PROTECT_FRAME_? :? Protect cursor frame heaps
HEAPS

_PTN_CACHE_THRE? :? flags and threshold to control partition metadata
SHOLD?????????????? caching

_PUSH_JOIN_PRED? :? enable pushing join predicate inside a view
ICATE

_PUSH_JOIN_UNIO? :? enable pushing join predicate inside a union all view
N_VIEW

_PUSH_JOIN_UNIO? :? enable pushing join predicate inside a union view
N_VIEW2

_PX_ADAPTIVE_DI? :? determines the behavior of adaptive distribution
ST_METHOD?????????? methods

_PX_ADAPTIVE_DI? :? Buffering / decision threshold for adaptive
ST_METHOD_THRES???? distribution methods
HOLD

_PX_ADAPTIVE_OF? :? percentage for PQ adaptive offloading of granules
FLOAD_PERCENTAG
E

_PX_ADAPTIVE_OF? :? threshold (GB/s) for PQ adaptive offloading of granules
FLOAD_THRESHOLD

_PX_ASYNC_GETGR? :? asynchronous get granule in the slave
ANULE

_PX_BACK_TO_PAR? :? allow going back to parallel after a serial operation
ALLEL

_PX_BIND_PEEK_S? :? enables sharing of px cursors that were built using
HARING????????????? bind peeking

_PX_BROADCAST_F? :? set the tq broadcasting fudge factor percentage
UDGE_FACTOR

_PX_BUFFER_TTL?? :? ttl for px mesg buffers in seconds
_PX_CDB_VIEW_EN? :? parallel cdb view evaluation enabled
ABLED

_PX_CHUNKLIST_C? :? ratio of the number of chunk lists to the default DOP
OUNT_RATIO????????? per instance

_PX_COMPILATION? :? debug level for parallel compilation
_DEBUG

_PX_COMPILATION? :? tracing level for parallel compilation
_TRACE

_PX_CONCURRENT?? :? enables pq with concurrent execution of serial inputs
_PX_CPU_AUTODOP? :? enables or disables auto dop cpu computation
_ENABLED

_PX_CPU_OPERATO? :? CPU operator bandwidth in MB/sec for DOP computation
R_BANDWIDTH

_PX_CPU_PROCESS? :? CPU process bandwidth in MB/sec for DOP computation
_BANDWIDTH

_PX_DP_ARRAY_SI? :? Max number of pq processes supported
ZE

_PX_DUMP_12805_? :? enables or disables tracing of 12805 signal source
SOURCE

_PX_DYNAMIC_OPT? :? turn off/on restartable qerpx dynamic optimization
_PX_DYNAMIC_SAM? :? num of samples for restartable qerpx dynamic
PLE_SIZE??????????? optimization

_PX_EXECUTION_S? :? enable service-based constraint of px slave allocation
ERVICES_ENABLED

_PX_FILTER_PARA? :? enables or disables correlated filter parallelization
LLELIZED

_PX_FILTER_SKEW? :? enable correlated filter parallelization to handle skew
_HANDLING

_PX_FREELIST_LA? :? Divide the computed number of freelists by this power
TCH_DIVISOR???????? of 2

_PX_GIM_FACTOR?? :? weighted autodop global index maintenance factor
_PX_GRANULE_BAT? :? maximum size of a batch of granules
CH_SIZE

_PX_GRANULE_RAN? :? enables or disables randomization of parallel scans
DOMIZE????????????? rowid granules

_PX_GRANULE_SIZ? :? default size of a rowid range granule (in KB)
E

_PX_GROUPBY_PUS? :? perform group-by pushdown for parallel query
HDOWN

_PX_HOLD_TIME??? :? hold px at execution time (unit: second)
_PX_HYBRID_TSM_? :? Enable Hybrid Temp Segment Merge/High Water Mark
HWMB_LOAD?????????? Brokered load method

_PX_INDEX_SAMPL? :? parallel query sampling for index create based on
ING_OBJSIZE???????? object size

_PX_IO_PROCESS_? :? IO process bandwidth in MB/sec for computing DOP
BANDWIDTH

_PX_IO_SYSTEM_B? :? total IO system bandwidth in MB/sec for computing DOP
ANDWIDTH

_PX_JOIN_SKEW_H? :? enables skew handling for parallel joins
ANDLING

_PX_JOIN_SKEW_M? :? sets minimum frequency(%) for skewed value for parallel
INFREQ????????????? joins

_PX_JOIN_SKEW_R? :? sets skew ratio for parallel joins
ATIO

_PX_KXIB_TRACIN? :? turn on kxib tracing
G

_PX_LOAD_BALANC? :? parallel load balancing policy
ING_POLICY

_PX_LOAD_FACTOR? :? weighted autodop load factor
_PX_LOAD_MONITO? :? threshold for pushing information to load slave
R_THRESHOLD???????? workload monitor

_PX_LOAD_PUBLIS? :? interval at which LMON will check whether to publish PX
H_INTERVAL????????? load

_PX_LOC_MSG_COS? :? CPU cost to send a PX message via shared memory
T

_PX_MAX_GRANULE? :? maximum number of rowid range granules to generate per
S_PER_SLAVE???????? slave

_PX_MAX_MAP_VAL? :? Maximum value of rehash mapping for PX
_PX_MAX_MESSAGE? :? percentage of shared pool for px msg buffers range
_POOL_PCT?????????? [5,90]

_PX_MESSAGE_COM? :? enable compression of control messages for parallel
PRESSION??????????? query

_PX_MINUS_INTER? :? enables pq for minus/interect operators
SECT

_PX_MIN_GRANULE? :? minimum number of rowid range granules to generate per
S_PER_SLAVE???????? slave

_PX_MONITOR_LOA? :? enable consumer load slave workload monitoring
D

_PX_NET_MSG_COS? :? CPU cost to send a PX message over the internconnect
T

_PX_NO_GRANULE_? :? prevent parallel partition granules to be sorted on
SORT??????????????? size

_PX_NO_STEALING? :? prevent parallel granule stealing in shared nothing
environment

_PX_NSS_PLANB??? :? enables or disables NSS Plan B reparse with outline
_PX_NUMA_STEALI? :? enable/disable PQ granule stealing across NUMA nodes
NG_ENABLED

_PX_NUMA_SUPPOR? :? enable/disable PQ NUMA support
T_ENABLED

_PX_OBJECT_SAMP? :? parallel query sampling for base objects (100000 =
LING??????????????? 100%)

_PX_OBJECT_SAMP? :? use base object sampling when possible for range
LING_ENABLED??????? distribution

_PX_ONEPASS_SLA? :? enable/disable one pass slave acquisition for parallel
VE_ACQUISITION????? execution

_PX_PARALLELIZE? :? enables or disables expression evaluation
_EXPRESSION???????? parallelization

_PX_PARTIAL_ROL? :? perform partial rollup pushdown for parallel execution
LUP_PUSHDOWN

_PX_PARTITION_S? :? enables or disables parallel partition-based scan
CAN_ENABLED

_PX_PARTITION_S? :? least number of partitions per slave to start
CAN_THRESHOLD?????? partition-based scan

_PX_PROACTIVE_S? :? parallel proactive slave allocation threshold/unit
LAVE_ALLOC_THRE
SHOLD

_PX_PROC_CONSTR? :? reduce parallel_max_servers if greater than (processes
AIN???????????????? – fudge)

_PX_PWG_ENABLED? :? parallel partition wise group by enabled
_PX_PWMR_ENABLE? :? parallel partition wise match recognize enabled
D

_PX_REPLICATION? :? enables or disables replication of small table scans
_ENABLED

_PX_ROUND_ROBIN? :? round robin row count to enq to next slave
_ROWCNT

_PX_ROWNUM_PD??? :? turn off/on parallel rownum pushdown optimization
_PX_SEND_TIMEOU? :? IPC message? send timeout value in seconds
T

_PX_SINGLE_SERV? :? allow single-slave dfo in parallel query
ER_ENABLED

_PX_SLAVES_SHAR? :? slaves share cursors with QC
E_CURSORS

_PX_TQ_ROWHVS??? :? turn on intra-row hash valueing sharing in TQ
_PX_TRACE??????? :? px trace parameter
_PX_UAL_SERIAL_? :? enables new pq for UNION operators
INPUT

_PX_USE_LARGE_P? :? Use Large Pool as source of PX buffers
OOL

_PX_WIF_DFO_DEC? :? NDV-aware DFO clumping of multiple window sorts
LUMPING

_PX_WIF_EXTEND_? :? extend TQ data redistribution keys for window functions
DISTRIBUTION_KE
YS

_PX_WIF_MIN_NDV? :? mininum NDV of TQ keys needed per slave for scalable
_PER_SLAVE????????? WiF PX

_PX_XTGRANULE_S? :? default size of a external table granule (in KB)
IZE

_QA_CONTROL????? :? Oracle internal parameter to control QA
_QA_LRG_TYPE???? :? Oracle internal parameter to specify QA lrg type
_QUERY_COST_REW? :? perform the cost based rewrite with materialized views
RITE

_QUERY_EXECUTIO? :? max size of query execution cache
N_CACHE_MAX_SIZ
E

_QUERY_MMVREWRI? :? query mmv rewrite maximum number of cmaps per dmap in
TE_MAXCMAPS???????? query disjunct

_QUERY_MMVREWRI? :? query mmv rewrite maximum number of dmaps per query
TE_MAXDMAPS???????? disjunct

_QUERY_MMVREWRI? :? query mmv rewrite maximum number of in-lists per
TE_MAXINLISTS?????? disjunct

_QUERY_MMVREWRI? :? query mmv rewrite maximum number of intervals per
TE_MAXINTERVALS???? disjunct

_QUERY_MMVREWRI? :? query mmv rewrite maximum number of predicates per
TE_MAXPREDS???????? disjunct

_QUERY_MMVREWRI? :? query mmv rewrite maximum number of query in-list
TE_MAXQRYINLIST???? values
VALS

_QUERY_MMVREWRI? :? query mmv rewrite maximum number of region permutations
TE_MAXREGPERM

_QUERY_ON_PHYSI? :? query on physical
CAL

_QUERY_REWRITE_? :? perform query rewrite before&after or only before view
1?????????????????? merging

_QUERY_REWRITE_? :? perform query rewrite before&after or only after view
2?????????????????? merging

_QUERY_REWRITE_? :? mv rewrite and drop redundant joins
DRJ

_QUERY_REWRITE_? :? rewrite with cannonical form for expressions
EXPRESSION

_QUERY_REWRITE_? :? mv rewrite fresh partition containment
FPC

_QUERY_REWRITE_? :? cost based query rewrite with MVs fudge factor
FUDGE

_QUERY_REWRITE_? :? mv rewrite with jg migration
JGMIGRATE

_QUERY_REWRITE_? :? query rewrite max disjuncts
MAXDISJUNCT

_QUERY_REWRITE_? :? allow query rewrite,if referenced tables are not
OR_ERROR??????????? dataless

_QUERY_REWRITE_? :? perform general rewrite using set operator summaries
SETOPGRW_ENABLE

_QUERY_REWRITE_? :? prune frocol chain before rewrite after view-merging
VOP_CLEANUP

_QUEUE_BUFFER_M? :? max number of bytes to dump to trace file for queue
AX_DUMP_LEN???????? buffer dump

_RADM_ENABLED??? :? Data Redaction
_RBR_CKPT_TRACI? :? Enable reuse block range checkpoint tracing
NG

_RCFG_DISABLE_V? :? if TRUE disables verify at reconfiguration
ERIFY

_RCFG_PARALLEL_? :? if TRUE enables parallel fixwrite at reconfiguration
FIXWRITE

_RCFG_PARALLEL_? :? if TRUE enables parallel replay and cleanup at
REPLAY????????????? reconfiguration

_RCFG_PARALLEL_? :? if TRUE enables parallel verify at reconfiguration
VERIFY

_RDBMS_COMPATIB? :? default RDBMS compatibility level
ILITY

_RDBMS_INTERNAL? :? enable CELL FPLIB filtering within rdbms
_FPLIB_ENABLED

_RDBMS_INTERNAL? :? enable reraising of any exceptions in CELL FPLIB
_FPLIB_RAISE_ER
RORS

_READABLE_STAND? :? readable standby query scn sync timeout
BY_SYNC_TIMEOUT

_READ_MOSTLY_EN? :? Read mostly instances enable non-privileged logons
ABLE_LOGON

_READ_MOSTLY_IN? :? indicates this is a read_mostly instance
STANCE

_READ_MOSTLY_IN? :? internal parameter to control read mostly instance QA
STANCE_QA_CONTR
OL

_READ_MOSTLY_SL? :? Time to wait on read mostly node when hub not available
AVE_TIMEOUT

_READ_ONLY_VIOL? :? read-only violation dump to trace files
ATION_DUMP_TO_T
RACE

_READ_ONLY_VIOL? :? read-only violation array max count
ATION_MAX_COUNT

_READ_ONLY_VIOL? :? read-only violation array per module max count
ATION_MAX_COUNT
_PER_MODULE

_REALFREE_HEAP_? :? minimum max total heap size,in Kbytes
MAX_SIZE

_REALFREE_HEAP_? :? mode flags for real-free heap
MODE

_REALFREE_HEAP_? :? hint for real-free page size in bytes
PAGESIZE

_REALFREE_PQ_HE? :? hint for pq real-free page size in bytes
AP_PAGESIZE

_REAL_TIME_APPL? :? Simulation value with real time apply
Y_SIM

_RECOVERABLE_RE? :? Recoverable recovery batch size (percentage of buffer
COVERY_BATCH_PE???? cache)
RCENT

_RECOVERY_ASSER? :? if TRUE,enable expensive integrity checks
TS

_RECOVERY_PERCE? :? recovery buffer cache percentage
NTAGE

_RECOVERY_READ_? :? number of recovery reads which can be outstanding
LIMIT

_RECOVERY_SKIP_? :? allow media recovery even if controlfile seq check
CFSEQ_CHECK???????? fails

_RECOVERY_VERIF? :? enable thread recovery write verify
Y_WRITES

_RECURSIVE_IMU_? :? recursive transactions may be IMU
TRANSACTIONS

_RECURSIVE_WITH? :? check for maximum level of recursion instead of
_MAX_RECURSION_???? checking for cycles
LEVEL

_REDEF_ON_STATE? :? Use on-statement refresh in online redefinition
MENT

_REDO_COMPATIBI? :? general and redo/undo compatibility sanity check
LITY_CHECK

_REDO_LOG_DEBUG? :? Various configuration flags for debugging redo logs
_CONFIG

_REDO_LOG_RECOR? :? Life time in hours for redo log table records
D_LIFE

_REDO_READ_FROM? :? Enable reading redo from in-memory log buffer
_MEMORY

_REDO_TRANSPORT? :? Is ASYNC LNS compression allowed?
_COMPRESS_ALL

_REDO_TRANSPORT? :? redo transport sanity check bit mask
_SANITY_CHECK

_REDO_TRANSPORT? :? I/O stall time before terminating redo transport
_STALL_TIME???????? process

_REDO_TRANSPORT? :? long I/O stall time before terminating redo transport
_STALL_TIME_LON???? process
G

_REDO_TRANSPORT? :? test stream connection?
_STREAM_TEST

_REDO_TRANSPORT? :? Stream network writes?
_STREAM_WRITES

_REDO_TRANSPORT? :? VIO size requirement
_VIO_SIZE_REQ

_REDUCE_SBY_LOG? :? enable standby log scan optimization
_SCAN

_REGION_NAME???? :? gsm region name
_RELEASE_INSERT? :? maximum number of unusable blocks to unlink from
_THRESHOLD????????? freelist

_RELIABLE_BLOCK? :? if TRUE,no side channel on reliable interconnect
_SENDS

_RELOCATE_PDB??? :? Relocate PDB to another RAC instance after it is closed
in the current instance

_RELOCATION_COM? :? ASM relocation commit batch size
MIT_BATCH_SIZE

_REMOTE_ASM????? :? remote ASM configuration
_REMOTE_AWR_ENA? :? Enable/disable Remote AWR Mode
BLED

_REMOVE_AGGR_SU? :? enables removal of subsumed aggregated subquery
BQUERY

_REMOVE_EXF_COM? :? enable/disable removing of components EXF and RUL
PONENT????????????? during upgrade

_REPLACE_VIRTUA? :? replace expressions with virtual columns
L_COLUMNS

_REPORT_CAPTURE? :? Time (in sec) between two cycles of report capture
_CYCLE_TIME???????? daemon

_REPORT_CAPTURE? :? 100X Percent of system db time daemon is allowed over
_DBTIME_PERCENT???? 10 cycles
_CUTOFF

_REPORT_CAPTURE? :? No of report capture cycles after which db time is
_RECHARGE_WINDO???? recharged
W

_REPORT_CAPTURE? :? Length of time band (in hours) in the reports time
_TIMEBAND_LENGT???? bands table
H

_REPORT_REQUEST? :? Time (in min) after which a report request is deleted
_AGEOUT_MINUTES???? from queue

_REP_BASE_PATH?? :? base path for EM reports in database
_RESET_MAXCAP_H? :? reset maxcap history time
ISTORY

_RESOURCE_INCLU? :? Whether RESOURCE role includes UNLIMITED TABLESPACE
DES_UNLIMITED_T???? privilege
ABLESPACE

_RESOURCE_MANAG? :? disable the resource manager always
ER_ALWAYS_OFF

_RESOURCE_MANAG? :? resource mgr top plan for internal use
ER_PLAN

_RESTORE_MAXOPE? :? restore assumption for maxopenfiles
NFILES

_RESTORE_SPFILE? :? restore spfile to this location
_RESULT_CACHE_A? :? result cache auto dml monitoring duration
UTO_DML_MONITOR
ING_DURATION

_RESULT_CACHE_A? :? result cache auto dml monitoring slot
UTO_DML_MONITOR
ING_SLOTS

_RESULT_CACHE_A? :? result cache auto dml threshold
UTO_DML_THRESHO
LD

_RESULT_CACHE_A? :? result cache auto dml trend threshold
UTO_DML_TREND_T
HRESHOLD

_RESULT_CACHE_A? :? result cache auto execution threshold
UTO_EXECUTION_T
HRESHOLD

_RESULT_CACHE_A? :? result cache auto max size allowed
UTO_SIZE_THRESH
OLD

_RESULT_CACHE_A? :? result cache auto time distance
UTO_TIME_DISTAN
CE

_RESULT_CACHE_A? :? result cache auto time threshold
UTO_TIME_THRESH
OLD

_RESULT_CACHE_B? :? result cache block size
LOCK_SIZE

_RESULT_CACHE_C? :? blocks to copy instead of pinning the result
OPY_BLOCK_COUNT

_RESULT_CACHE_D? :? result cache deterministic PLSQL functions
ETERMINISTIC_PL
SQL

_RESULT_CACHE_G? :? Are results available globally across RAC?
LOBAL

_RESULT_CACHE_T? :? maximum time (sec) a session waits for a result
IMEOUT

_RESUMABLE_CRIT? :? raise critical alert for resumable failure
ICAL_ALERT

_REUSE_INDEX_LO? :? number of blocks being examine for index block reuse
OP

_RE_FAST_SQL_OP? :? enables fast boxable sql operator
ERATOR

_RE_INDEPENDENT? :? defines max number of compiled cached expressions for
_EXPRESSION_CAC???? iee
HE_SIZE

_RE_NUM_COMPLEX? :? defines max number of compiled complex operator per
_OPERATOR?????????? ruleset-iee

_RE_NUM_ROWCACH? :? defines max number of complex operators loaded with row
E_LOAD????????????? cache

_RE_RESULT_CACH? :? defines max number key for result cache hash table
E_KEYSIZ

_RE_RESULT_CACH? :? defines max number of cached elements for result cache
E_SIZE

_RIGHT_OUTER_HA? :? Right Outer/Semi/Anti Hash Enabled
SH_ENABLE

_RMAN_IO_PRIORI? :? priority at which rman backup i/o’s are done
TY

_RMAN_ROUNDROBI? :? Numa round robin placement for RMAN procs
N_PLACEMENT

_RM_CLUSTER_INT? :? interconnects for RAC use (RM)
ERCONNECTS

_RM_NUMA_SCHED_? :? Is Resource Manager (RM) related NUMA scheduled policy
ENABLE????????????? enabled

_RM_NUMA_SIMULA? :? number of cpus for each pg for numa simulation in
TION_CPUS?????????? resource manager

_RM_NUMA_SIMULA? :? number of PGs for numa simulation in resource manager
TION_PGS

_ROLLBACK_SEGME? :? number of undo segments
NT_COUNT

_ROLLBACK_SEGME? :? starting undo segment number
NT_INITIAL

_ROLLBACK_STOPA? :? stop at -position to step rollback
T

_ROND_TEST_MODE? :? rac one node test mode
_ROWLEN_FOR_CHA? :? maximum rowlen above which rows may be chained across
INING_THRESHOLD???? blocks

_ROWSETS_CDB_VI? :? rowsets enabled for CDB views
EW_ENABLED

_ROWSETS_ENABLE? :? enable/disable rowsets
D

_ROWSETS_MAX_RO? :? maximum number of rows in a rowset
WS

_ROWSETS_TARGET? :? target size in bytes for space reserved in the frame
_MAXSIZE??????????? for a rowset

_ROWSOURCE_EXEC? :? if TRUE,Oracle will collect rowsource statistics
UTION_STATISTIC
S

_ROWSOURCE_PROF? :? if TRUE,Oracle will capture active row sources in
ILING_STATISTIC???? v$active_session_history
S

_ROWSOURCE_STAT? :? frequency of rowsource statistic sampling (must be a
ISTICS_SAMPFREQ???? power of 2)

_ROWSRC_TRACE_L? :? Row source tree tracing level
EVEL

_ROW_CACHE_CURS? :? number of cached cursors for row cache management
ORS

_ROW_CR????????? :? enable row cr for all sql
_ROW_LOCKING???? :? row-locking
_ROW_SHIPPING_E? :? enable row shipping explain plan support
XPLAIN

_ROW_SHIPPING_T? :? row shipping column selection threshold
HRESHOLD

_RTADDM_TRIGGER? :? comma-separated list of numeric arguments for RT addm
_ARGS?????????????? trigger

_RTADDM_TRIGGER? :? To enable or disable Real-Time ADDM automatic trigger
_ENABLED

_RTA_SYNC_WAIT_? :? RTA sync wait timeout
TIMEOUT

_RTC_INFEASIBLE? :? Redo Transport Compression infeasible threshold
_THRESHOLD

_SAMPLE_ROWS_PE? :? number of rows per block used for sampling IO
R_BLOCK???????????? optimization

_SCALAR_TYPE_LO? :? threshold for VARCHAR2,NVARCHAR2,and RAW storage as
B_STORAGE_THRES???? BLOB
HOLD

_SCATTER_GCS_RE? :? if TRUE,gcs resources are scattered uniformly across
SOURCES???????????? sub pools

_SCATTER_GCS_SH? :? if TRUE,gcs shadows are scattered uniformly across sub
ADOWS?????????????? pools

_SCHED_DELAY_MA? :? scheduling delay maximum number of samples
X_SAMPLES

_SCHED_DELAY_ME? :? scheduling delay mesurement sleep us
ASUREMENT_SLEEP
_US

_SCHED_DELAY_OS? :? os tick granularity used by scheduling delay
_TICK_GRANULARI???? calculations
TY_US

_SCHED_DELAY_SA? :? scheduling delay sample collection duration threshold
MPLE_COLLECTION???? ms
_THRESH_MS

_SCHED_DELAY_SA? :? scheduling delay sampling interval in ms
MPLE_INTERVAL_M
S

_SCN_WAIT_INTER? :? max exponential backoff time for scn wait interface in
FACE_MAX_BACKOF???? kta
F_TIME_SECS

_SCN_WAIT_INTER? :? max timeout for scn wait interface in kta
FACE_MAX_TIMEOU
T_SECS

_SDIAG_CRASH???? :? sql diag crash
_SECOND_SPARE_P? :? second spare parameter – integer
ARAMETER

_SECUREFILES_BR? :? segment retry before dishonoring retention
EAKRETEN_RETRY

_SECUREFILES_BU? :? securefiles segment insert only optization
LKINSERT

_SECUREFILES_CO? :? securefiles concurrency estimate
NCURRENCY_ESTIM
ATE

_SECUREFILES_FG? :? segment retry before foreground waits
_RETRY

_SECUREFILES_FO? :? securefiles force flush before allocation
RCEFLUSH

_SECUREFILES_ME? :? securefiles memory as percent of SGA
MORY_PERCENTOFS
GA

_SECUREFILES_SP? :? securefiles segment utl optimization
CUTL

_SECUREFILE_LOG? :? Maximum number of open descriptors for securefile log
_NUM_LATCHES

_SECUREFILE_LOG? :? Size of securefile log buffer pool from SGA
_SHARED_POOL_SI
ZE

_SECUREFILE_TIM? :? collect kdlu timers and accumulate per layers
ERS

_SEC_ENABLE_TES? :? Whether to enable the test RPCs
T_RPCS

_SELECTIVITY_FO? :? enable/disable selectivity for storage reduction factor
R_SRF_ENABLED

_SELECT_ANY_DIC? :? Exclude USER$,XS$VERIFIERS,ENC$ and DEFAULT_PWD$ from
TIONARY_SECURIT???? SELECT ANY DICTIONARY system privilege
Y_ENABLED

_SELFJOIN_MV_DU? :? control rewrite self-join algorithm
PLICATES

_SELFTUNE_CHECK? :? Self-tune checkpointing lag the tail of the redo log
POINTING_LAG

_SELFTUNE_CHECK? :? Percentage of total physical i/os for self-tune ckpt
POINT_WRITE_PCT

_SEM_PER_SEMID?? :? the exact number of semaphores per semaphore set to
allocate

_SEND_AST_TO_FO? :? if TRUE,send ast message to foreground
REGROUND

_SEND_CLOSE_WIT? :? if TRUE,send close with block even with direct sends
H_BLOCK

_SEND_REQUESTS_? :? if TRUE,try to send CR requests to PI buffers
TO_PI

_SERIALIZABLE??? :? serializable
_SERIALIZE_LGWR? :? Serialize LGWR SYNC local and remote io
_SYNC_IO

_SERIAL_DIRECT_? :? enable direct read in serial
READ

_SERIAL_LOG_WRI? :? Serialize log write slave I/O
TE_WORKER_IO

_SERIAL_RECOVER? :? force serial recovery or parallel recovery
Y

_SERVICE_CLEANU? :? timeout to peform service cleanup
P_TIMEOUT

_SESSION_ALLOCA? :? one latch per group of sessions
TION_LATCHES

_SESSION_CACHED? :? Number of pl/sql instantiations to cache in a session.
_INSTANTIATIONS

_SESSION_CONTEX? :? session app context size
T_SIZE

_SESSION_IDLE_B? :? one latch per session or a latch per group of sessions
IT_LATCHES

_SESSION_PAGE_E? :? Session Page Extent Size
XTENT

_SESSION_WAIT_H? :? enable session wait history collection
ISTORY

_SET_CONTAINER_? :? set container service
SERVICE

_SET_MGD_RECOVE? :? set mgd recovery state to new value
RY_STATE

_SEVENTEENTH_SP? :? seventeenth spare parameter – string
ARE_PARAMETER

_SEVENTH_SPARE_? :? seventh spare parameter – integer
PARAMETER

_SF_DEFAULT_ENA? :? enable 12g securefile default
BLED

_SGA_ALLOC_SLAV? :? Termination timeout in secs for SA** slaves
ES_TERM_TIMEOUT
_SECS

_SGA_CLEAR_DUMP? :? Allow dumping encrypted blocks in clear for debugging
_SGA_EARLY_TRAC? :? sga early trace event
E

_SGA_LOCKING???? :? sga granule locking state
_SHARED_IOP_MAX? :? maximum shared io pool size
_SIZE

_SHARED_IO_POOL? :? Shared IO pool buffer size
_BUF_SIZE

_SHARED_IO_POOL? :? trace kcbi debug info to tracefile
_DEBUG_TRC

_SHARED_IO_POOL? :? Size of shared IO pool
_SIZE

_SHARED_IO_SET_? :? shared io pool size set internal value – overwrite zero
VALUE?????????????? user size

_SHARED_POOL_MA? :? shared pool maximum size when auto SGA enabled
X_SIZE

_SHARED_POOL_MI? :? shared pool minimum size when auto SGA enabled
NSIZE_ON

_SHARED_POOL_RE? :? minimum allocation size in bytes for reserved area of
SERVED_MIN_ALLO???? shared pool
C

_SHARED_POOL_RE? :? percentage memory of the shared pool allocated for the
SERVED_PCT????????? reserved area

_SHARED_SERVER_? :? shared server load balance
LOAD_BALANCE

_SHARED_SERVER_? :? number of shared server common queues
NUM_QUEUES

_SHMPROTECT????? :? allow mprotect use for shared memory
_SHORT_STACK_TI? :? short stack timeout in ms
MEOUT_MS

_SHOW_MGD_RECOV? :? Show internal managed recovery state
ERY_STATE

_SHRD_QUE_TM_PR? :? number of sharded queue Time Managers to start
OCESSES

_SHRD_QUE_TM_ST? :? Shaded queue statistics collection window duration
ATISTICS_DURATI
ON

_SHRUNK_AGGS_DI? :? percentage of exceptions at which to switch to full
SABLE_THRESHOLD???? length aggs

_SHRUNK_AGGS_EN? :? enable use of variable sized buffers for non-distinct
ABLED?????????????? aggregates

_SHUTDOWN_COMPL? :? minutes for shutdown operation to wait for sessions to
ETION_TIMEOUT_M???? complete
INS

_SIDE_CHANNEL_B? :? number of messages to batch in a side channel message
ATCH_SIZE?????????? (DFS)

_SIDE_CHANNEL_B? :? timeout before shipping out the batched side
ATCH_TIMEOUT??????? channelmessages in seconds

_SIDE_CHANNEL_B? :? timeout before shipping out the batched side
ATCH_TIMEOUT_MS???? channelmessages in milliseconds

_SIMPLE_VIEW_ME? :? control simple view merging performed by the optimizer
RGING

_SIMULATED_LOG_? :? Simulated latency of log writes (usecs)
WRITE_USECS

_SIMULATE_DISK_? :? Enables skgfr to report simulated disk sector size
SECTORSIZE

_SIMULATE_IO_WA? :? Simulate I/O wait to test segment advisor
IT

_SIMULATE_MEM_T? :? simulate auto memory sga/pga transfers
RANSFER

_SIMULATOR_BUCK? :? LRU bucket minimum delta
ET_MINDELTA

_SIMULATOR_INTE? :? simulator internal bound percent
RNAL_BOUND

_SIMULATOR_LRU_? :? LRU list rebalance threshold (size)
REBALANCE_SIZTH
R

_SIMULATOR_LRU_? :? LRU list rebalance threshold (count)
REBALANCE_THRES
H

_SIMULATOR_LRU_? :? LRU scan count
SCAN_COUNT

_SIMULATOR_PIN_? :? maximum count of invalid chunks on pin list
INVAL_MAXCNT

_SIMULATOR_RESE? :? simulator reserved heap count
RVED_HEAP_COUNT

_SIMULATOR_RESE? :? simulator reserved object count
RVED_OBJ_COUNT

_SIMULATOR_SAMP? :? sampling factor for the simulator
LING_FACTOR

_SIMULATOR_UPPE? :? upper bound multiple of pool size
R_BOUND_MULTIPL
E

_SINGLE_PROCESS? :? run without detached processes
_SIOP_FLASHBACK? :? Shared IO pool flashback io completion scan depth
_SCANDEPTH

_SIOP_PERC_OF_B? :? percentange * 100 of cache to transfer to shared io
C_X100????????????? pool

_SIXTEENTH_SPAR? :? sixteenth spare parameter – string
E_PARAMETER

_SIXTH_SPARE_PA? :? sixth spare parameter – integer
RAMETER

_SKGXPG_LAST_PA? :? last defined skgxpg parameter – oss
RAMETER

_SKGXP_ANT_OPTI? :? SKGXP ANT options (oss)
ONS

_SKGXP_CTX_FLAG? :? IPC debug options flags (oss)
S1

_SKGXP_CTX_FLAG? :? IPC debug options flags mask (oss)
S1MASK

_SKGXP_DYNAMIC_? :? IPC protocol override
PROTOCOL??????????? (!0/-1=*,0x1000=ipc_X)

_SKGXP_GEN_ANT_? :? VRPC request timeout when ANT disabled
OFF_RPC_TIMEOUT
_IN_SEC

_SKGXP_GEN_ANT_? :? ANT protocol ping miss count
PING_MISSCOUNT

_SKGXP_GEN_RPC_? :? ANT ping protocol miss count
NO_PATH_CHECK_I
N_SEC

_SKGXP_GEN_RPC_? :? VRPC request timeout when ANT enabled
TIMEOUT_IN_SEC

_SKGXP_INETS???? :? limit SKGXP networks (oss)
_SKGXP_MIN_RPC_? :? IPC threshold for rpc rcv zcpy operation (default = 0 –
RCV_ZCPY_LEN??????? disabled)

_SKGXP_MIN_ZCPY? :? IPC threshold for zcpy operation (default = 0 –
_LEN??????????????? disabled)

_SKGXP_REAPING?? :? tune skgxp OSD reaping limit
_SKGXP_RGN_PORT? :? region socket limits (0xFFFFNNXX): F=flags,
S?????????????????? X=max

_SKGXP_SPARE_PA? :? ipc oss spare parameter 1
RAM1

_SKGXP_SPARE_PA? :? ipc oss spare parameter 2
RAM2

_SKGXP_SPARE_PA? :? ipc oss spare parameter 3
RAM3

_SKGXP_SPARE_PA? :? ipc oss spare parameter 4
RAM4

_SKGXP_SPARE_PA? :? ipc oss spare parameter 5
RAM5

_SKGXP_UDP_ACH_? :? time in minutes before idle ach’s are reaped
REAPING_TIME

_SKGXP_UDP_ACK_? :? Enables delayed acks
DELAY

_SKGXP_UDP_ENAB? :? Enables dynamic credit management
LE_DYNAMIC_CRED
IT_MGMT

_SKGXP_UDP_HIWA? :? ach hiwat mark warning interval
T_WARN

_SKGXP_UDP_INTE? :? time in seconds between interface detection checks
RFACE_DETECTION
_TIME_SECS

_SKGXP_UDP_KEEP? :? connection idle time in seconds before keep alive is
_ALIVE_PING_TIM???? initiated. min: 30 sec max: 1800 sec default: 300 sec
ER_SECS

_SKGXP_UDP_LMP_? :? MTU size for UDP LMP testing
MTUSIZE

_SKGXP_UDP_LMP_? :? enable UDP long message protection
ON

_SKGXP_UDP_TIME? :? diagnostic log buffering space (in bytes) for timed
D_WAIT_BUFFERIN???? wait (0 means unbufferd
G

_SKGXP_UDP_TIME? :? time in seconds before timed wait is invoked
D_WAIT_SECONDS

_SKGXP_UDP_USE_? :? disable use of high speek timer
TCB

_SKGXP_ZCPY_FLA? :? IPC zcpy options flags
GS

_SKIP_ACFS_CHEC? :? Override checking if on an ACFS file system
KS

_SKIP_ASSUME_MS? :? if TRUE,skip assume message for consigns at the master
G

_SKIP_TRSTAMP_C? :? Skip terminal recovery stamp check
HECK

_SLAVE_MAPPING_? :? enable slave mapping when TRUE
ENABLED

_SLAVE_MAPPING_? :? force the number of slave group in a slave mapper
GROUP_SIZE

_SLAVE_MAPPING_? :? maximum skew before slave mapping is disabled
SKEW_RATIO

_SMALL_TABLE_TH? :? lower threshold level of table size for direct reads
RESHOLD

_SMM_ADVICE_ENA? :? if TRUE,enable v$pga_advice
BLED

_SMM_ADVICE_LOG? :? overwrites default size of the PGA advice workarea
_SIZE?????????????? history log

_SMM_AUTO_COST_? :? if TRUE,use the AUTO size policy cost functions
ENABLED

_SMM_AUTO_MAX_I? :? Maximum IO size (in KB) used by sort/hash-join in auto
O_SIZE????????????? mode

_SMM_AUTO_MIN_I? :? Minimum IO size (in KB) used by sort/hash-join in auto
O_SIZE????????????? mode

_SMM_BOUND?????? :? overwrites memory manager automatically computed bound
_SMM_CONTROL???? :? provides controls on the memory manager
_SMM_FREEABLE_R? :? value in KB of the instance freeable PGA memory to
ETAIN?????????????? retain

_SMM_ISORT_CAP?? :? maximum work area for insertion sort(v1)
_SMM_MAX_SIZE??? :? maximum work area size in auto mode (serial)
_SMM_MAX_SIZE_S? :? static maximum work area size in auto mode (serial)
TATIC

_SMM_MIN_SIZE??? :? minimum work area size in auto mode
_SMM_PX_MAX_SIZ? :? maximum work area size in auto mode (global)
E

_SMM_PX_MAX_SIZ? :? static maximum work area size in auto mode (global)
E_STATIC

_SMM_RETAIN_SIZ? :? work area retain size in SGA for shared server sessions
E?????????????????? (0 for AUTO)

_SMM_TRACE?????? :? Turn on/off tracing for SQL memory manager
_SMON_INTERNAL_? :? limit of SMON internal errors
ERRLIMIT

_SMON_UNDO_SEG_? :? limit of SMON continous undo segments re-scan
RESCAN_LIMIT

_SMU_DEBUG_MODE? :? <debug-flag> – set debug event for testing SMU
operations

_SMU_ERROR_SIMU? :? site ID of error simulation in KTU code
LATION_SITE

_SMU_ERROR_SIMU? :? error type for error simulation in KTU code
LATION_TYPE

_SMU_TIMEOUTS??? :? comma-separated *AND double-quoted* list of AUM
timeouts: mql,tur,sess_exprn,qry_exprn,slot_intvl

_SNAPSHOT_RECOV? :? enable/disable snapshot recovery
ERY_ENABLED

_SORT_ELIMINATI? :? cost ratio for sort eimination under first_rows mode
ON_COST_RATIO

_SORT_MULTIBLOC? :? multi-block read count for sort
K_READ_COUNT

_SORT_SPILL_THR? :? force sort to spill to disk each time this many rows
ESHOLD????????????? are received

_SORT_SYNC_MIN_? :? controls the size of mininum run size for synchronized
SPILLSIZE?????????? spill (in kb)

_SORT_SYNC_MIN_? :? controls the mininum spill size for synchronized spill
SPILL_THRESHOLD???? (in percent)

_SPACE_ALIGN_SI? :? space align size
ZE

_SPARE_TEST_PAR? :? Spare test parameter
AMETER

_SPAWN_DIAG_OPT? :? thread spawn diagnostic options
S

_SPAWN_DIAG_THR? :? thread spawn diagnostic minimal threshold in seconds
ESH_SECS

_SPIN_COUNT????? :? Amount to spin waiting for a latch
_SPR_MAX_RULES?? :? maximum number of rules in sql spreadsheet
_SPR_PUSH_PRED_? :? push predicates through reference spreadsheet
REFSPR

_SPR_USE_AW_AS?? :? enable AW for hash table in spreadsheet
_SPR_USE_HASH_T? :? use hash table for spreadsheet
ABLE

_SQLEXEC_PROGRE? :? sql execution progression monitoring cost threshold
SSION_COST

_SQLMON_BINDS_X? :? format of column binds_xml in [G]V$SQL_MONITOR
ML_FORMAT

_SQLMON_MAX_PLA? :? Maximum number of plans entry that can be monitored.
N?????????????????? Defaults to 20 per CPU

_SQLMON_MAX_PLA? :? Number of plan lines beyond which a plan cannot be
NLINES????????????? monitored

_SQLMON_RECYCLE? :? Minimum time (in s) to wait before a plan entry can be
_TIME?????????????? recycled

_SQLMON_THRESHO? :? CPU/IO time threshold before a statement is monitored.
LD????????????????? 0 is disabled

_SQLTUNE_CATEGO? :? Parsed category qualifier for applying hintsets
RY_PARSED

_SQL_ANALYZE_EN? :? SQL Analyze Autonomous Transaction control parameter
ABLE_AUTO_TXN

_SQL_ANALYZE_PA? :? SQL Analyze Parse Model control parameter
RSE_MODEL

_SQL_COMPATIBIL? :? sql compatability bit vector
ITY

_SQL_CONNECT_CA? :? SQL Connect Capability Table Override
PABILITY_OVERRI
DE

_SQL_CONNECT_CA? :? SQL Connect Capability Table (testing only)
PABILITY_TABLE

_SQL_DIAG_REPO_? :? duarations where sql diag repository are retained
ORIGIN

_SQL_DIAG_REPO_? :? retain sql diag repository to cursor or not
RETAIN

_SQL_HASH_DEBUG? :? Hash value of the SQL statement to debug
_SQL_HVSHARE_DE? :? control hash value sharing debug level
BUG

_SQL_HVSHARE_TH? :? threshold to control hash value sharing across
RESHOLD???????????? operators

_SQL_MODEL_UNFO? :? specifies compile-time unfolding of sql model forloops
LD_FORLOOPS

_SQL_NCG_MODE??? :? Optimization mode for SQL NCG
_SQL_PLAN_DIREC? :? controls internal SQL Plan Directive management
TIVE_MGMT_CONTR???? activities
OL

_SQL_PLAN_MANAG? :? controls various internal SQL Plan Management
EMENT_CONTROL?????? algorithms

_SQL_SHOW_EXPRE? :? show expression evalution as shared hash producer in
VAL???????????????? plan

_SRVNTFN_JOBSUB? :? srvntfn job submit interval
MIT_INTERVAL

_SRVNTFN_JOB_DE? :? srvntfn job deq timeout
Q_TIMEOUT

_SRVNTFN_MAX_CO? :? srvntfn max concurrent jobs
NCURRENT_JOBS

_SRVNTFN_Q_MSGC? :? srvntfn q msg count for job exit
OUNT

_SRVNTFN_Q_MSGC? :? srvntfn q msg count increase for job submit
OUNT_INC

_SSCR_DIR??????? :? Session State Capture and Restore DIRectory object
_SSCR_OSDIR????? :? Session State Capture and Restore OS DIRectory
_STACK_GUARD_LE? :? stack guard level
VEL

_STANDBY_CAUSAL? :? readable standby causal heartbeat timeout
_HEARTBEAT_TIME
OUT

_STANDBY_FLUSH_? :? standby flush mode
MODE

_STANDBY_IMPLIC? :? minutes to wait for redo during standby implicit
IT_RCV_TIMEOUT????? recovery

_STANDBY_SWITCH? :? Number of secords for standby switchover enqueue
OVER_TIMEOUT??????? timeout

_STATIC_BACKGRO? :? static backgrounds
UNDS

_STATISTICS_BAS? :? enable/disable the use of statistics for storage
ED_SRF_ENABLED????? reduction factor

_STAT_AGGS_ONE_? :? enable one pass algorithm for variance-related
PASS_ALGORITHM????? functions

_STA_CONTROL???? :? SQL Tuning Advisory control parameter
_STEP_DOWN_LIMI? :? step down limit in percentage
T_IN_PCT

_STREAMS_POOL_M? :? streams pool maximum size when auto SGA enabled
AX_SIZE

_SUBQUERY_PRUNI? :? subquery pruning cost factor
NG_COST_FACTOR

_SUBQUERY_PRUNI? :? enable the use of subquery predicates to perform
NG_ENABLED????????? pruning

_SUBQUERY_PRUNI? :? enable the use of subquery predicates with MVs to
NG_MV_ENABLED?????? perform pruning

_SUBQUERY_PRUNI? :? subquery pruning reduction factor
NG_REDUCTION

_SUPPRESS_IDENT? :? supress owner index name err msg
IFIERS_ON_DUPKE
Y

_SWITCHOVER_TIM? :? Switchover timeout in minutes
EOUT

_SWITCHOVER_TO_? :? option for graceful switchover to standby
STANDBY_OPTION

_SWITCHOVER_TO_? :? Switchover to standby switches log for open redo
STANDBY_SWITCH_???? threads
LOG

_SWITCH_CURRENT? :? switch current uses scan scn
_SCAN_SCN

_SWRF_METRIC_FR? :? Enable/disable SWRF Metric Frequent Mode Collection
EQUENT_MODE

_SWRF_MMON_DBFU? :? Enable/disable SWRF MMON DB Feature Usage
S

_SWRF_MMON_FLUS? :? Enable/disable SWRF MMON FLushing
H

_SWRF_MMON_METR? :? Enable/disable SWRF MMON Metrics Collection
ICS

_SWRF_ON_DISK_E? :? Parameter to enable/disable SWRF
NABLED

_SWRF_TEST_ACTI? :? test action parameter for SWRF
ON

_SWRF_TEST_DBFU? :? Enable/disable DB Feature Usage Testing
S

_SYNC_PRIMARY_W? :? wait time for alter session sync with primary
AIT_TIME

_SYNONYM_REPOIN? :? whether to trace metadata comparisons for synonym
T_TRACING?????????? repointing

_SYSAUX_TEST_PA? :? test parameter for SYSAUX
RAM

_SYSTEM_API_INT? :? enable debug tracing for system api interception
ERCEPTION_DEBUG

_SYSTEM_INDEX_C? :? optimizer percent system index caching
ACHING

_SYSTEM_TRIG_EN? :? are system triggers enabled
ABLED

_SYS_LOGON_DELA? :? failed logon delay for sys
Y

_TABLESPACES_PE? :? estimated number of tablespaces manipulated by each
R_TRANSACTION?????? transaction

_TABLE_LOOKUP_P? :? table lookup prefetch vector size
REFETCH_SIZE

_TABLE_LOOKUP_P? :? table lookup prefetch threshold
REFETCH_THRESH

_TABLE_SCAN_COS? :? bump estimated full table scan and index ffs cost by
T_PLUS_ONE????????? one

_TARGET_LOG_WRI? :? Do log write if this many redo blocks in buffer
TE_SIZE???????????? (auto=0)

_TARGET_LOG_WRI? :? How long LGWR will wait for redo to accumulate (csecs)
TE_SIZE_TIMEOUT

_TARGET_RBA_MAX? :? target rba max log lag percentage
_LAG_PERCENTAGE

_TA_LNS_WAIT_FO? :? LNS Wait time for arhcived version of online log
R_ARCH_LOG

_TDB_DEBUG_MODE? :? set debug mode for testing transportable database
_TEMP_TRAN_BLOC? :? number of blocks for a dimension before we temp
K_THRESHOLD???????? transform

_TEMP_TRAN_CACH? :? determines if temp table is created with cache option
E

_TEMP_UNDO_DISA? :? is temp undo disabled on ADG
BLE_ADG

_TENTH_SPARE_PA? :? tenth spare parameter – integer
RAMETER

_TEST_HM_EXTENT? :? heatmap related – to be used by oracle dev only
_MAP

_TEST_KSUSIGSKI? :? test the function ksusigskip
P

_TEST_PARAM_1??? :? test parmeter 1 – integer
_TEST_PARAM_2??? :? test parameter 2 – string
_TEST_PARAM_3??? :? test parameter 3 – string
_TEST_PARAM_4??? :? test parameter 4 – string list
_TEST_PARAM_5??? :? test parmeter 5 – deprecated integer
_TEST_PARAM_6??? :? test parmeter 6 – size (ub8)
_TEST_PARAM_7??? :? test parameter 7 – big integer list
_TEST_PARAM_8??? :? test parameter 8 – cdb tests
_THIRD_SPARE_PA? :? third spare parameter – integer
RAMETER

_THIRTEENTH_SPA? :? thirteenth spare parameter – integer
RE_PARAMETER

_THREAD_STATE_C? :? Thread state change timeout for PnP instance (in sec)
HANGE_TIMEOUT_P
NP

_THRESHOLD_ALER? :? if 1,issue threshold-based alerts
TS_ENABLE

_TIMEMODEL_COLL? :? enable timemodel collection
ECTION

_TIMEOUT_ACTION? :? enables or disables KSU timeout actions
S_ENABLED

_TIMER_PRECISIO? :? VKTM timer precision in milli-sec
N

_TIME_BASED_RCV? :? time-based incremental recovery checkpoint target in
_CKPT_TARGET??????? sec

_TIME_BASED_RCV? :? time-based incremental recovery file header update
_HDR_UPDATE_INT???? interval in sec
ERVAL

_TOTAL_LARGE_EX? :? Total memory for allocating large extents
TENT_MEMORY

_TQ_DUMP_PERIOD? :? time period for duping of TQ statistics (s)
_TRACE_BUFFERS?? :? trace buffer sizes per process
_TRACE_BUFFER_W? :? trace buffer busy wait timeouts
AIT_TIMEOUTS

_TRACE_DUMP_ALL? :? if TRUE on error buckets of all processes will be
_PROCS????????????? dumped to the current trace file

_TRACE_DUMP_CLI? :? if TRUE dump client (ie. non-kst) buckets
ENT_BUCKETS

_TRACE_DUMP_CUR? :? if TRUE on error just dump our process bucket
_PROC_ONLY

_TRACE_DUMP_STA? :? if TRUE filter trace dumps to always loaded dlls
TIC_ONLY

_TRACE_EVENTS??? :? trace events enabled at startup
_TRACE_FILES_PU? :? Create publicly accessible trace files
BLIC

_TRACE_KQLIDP??? :? trace kqlidp0 operation
_TRACE_KTFS????? :? Trace ILM Stats Tracking
_TRACE_KTFS_MEM? :? Debug memleak
_TRACE_NAVIGATI? :? enabling trace navigation linking
ON_SCOPE

_TRACE_PIN_TIME? :? trace how long a current pin is held
_TRACE_POOL_SIZ? :? trace pool size in bytes
E

_TRACE_PROCESSE? :? enable KST tracing in process
S

_TRACE_TEMP????? :? Trace Tempspace Management
_TRACE_VIRTUAL_? :? trace virtual columns exprs
COLUMNS

_TRACK_METRICS_? :? Enable/disable Metrics Memory Tracking
MEMORY

_TRANSACTION_AU? :? transaction auditing records generated in the redo log
DITING

_TRANSACTION_RE? :? max number of parallel recovery slaves that may be used
COVERY_SERVERS

_TRANSIENT_LOGI? :? clear KCCDI2HMRP flag during standby recovery
CAL_CLEAR_HOLD_
MRP_BIT

_TRUNCATE_OPTIM? :? do truncate optimization if set to TRUE
IZATION_ENABLED

_TSENC_OBFUSCAT? :? Encryption key obfuscation in memory
E_KEY

_TSENC_TRACING?? :? Enable TS encryption tracing
_TSM_CONNECT_ST? :? TSM test connect string
RING

_TSM_DISABLE_AU? :? Disable TSM auto cleanup actions
TO_CLEANUP

_TSTZ_LOCALTIME? :? Should TTC not convert to LocalTime to preserve
_BYPASS???????????? Timestamp with Timezone values

_TTS_ALLOW_CHAR? :? allow plugging in a tablespace with an incompatible
SET_MISMATCH??????? character set

_TWELFTH_SPARE_? :? twelfth spare parameter – integer
PARAMETER

_TWENTIETH_SPAR? :? twentieth spare parameter – string
E_PARAMETER

_TWENTY-EIGHTH_? :? twenty-eighth spare parameter – boolean
SPARE_PARAMETER

_TWENTY-FIFTH_S? :? twenty-fifth spare parameter – string list
PARE_PARAMETER

_TWENTY-FIRST_S? :? twenty-first spare parameter – string list
PARE_PARAMETER

_TWENTY-FOURTH_? :? twenty-fourth spare parameter – string list
SPARE_PARAMETER

_TWENTY-SECOND_? :? twenty-second spare parameter – string list
SPARE_PARAMETER

_TWENTY-SEVENTH? :? twenty-seventh spare parameter – boolean
_SPARE_PARAMETE
R

_TWENTY-SIXTH_S? :? twenty-sixth spare parameter – boolean
PARE_PARAMETER

_TWENTY-THIRD_S? :? twenty-third spare parameter – string list
PARE_PARAMETER

_TWO_PASS??????? :? enable two-pass thread recovery
_TWO_PASS_REVER? :? uses two-pass reverse polish alg. to generate canonical
SE_POLISH_ENABL???? forms
ED

_TXN_CONTROL_TR? :? size the in-memory buffer size of txn control
ACE_BUF_SIZE

_UGA_CGA_LARGE_? :? UGA/CGA large extent size
EXTENT_SIZE

_ULTRAFAST_LATC? :? maintain fast-path statistics for ultrafast latches
H_STATISTICS

_UNDO_AUTOTUNE?? :? enable auto tuning of undo_retention
_UNDO_BLOCK_COM? :? enable undo block compression
PRESSION

_UNDO_DEBUG_MOD? :? debug flag for undo related operations
E

_UNDO_DEBUG_USA? :? invoke undo usage functions for testing
GE

_UNIFIED_AUDIT_? :? Unified Audit SGA Queue Flush Interval
FLUSH_INTERVAL

_UNIFIED_AUDIT_? :? Unified Audit SGA Queue Flush Threshold
FLUSH_THRESHOLD

_UNIFIED_AUDIT_? :? Disable Default Unified Audit Policies on DB Create
POLICY_DISABLED

_UNION_REWRITE_? :? expand queries with GSets into UNIONs for rewrite
FOR_GS

_UNNEST_SUBQUER? :? enables unnesting of complex subqueries
Y

_UNUSED_BLOCK_C? :? enable unused block compression
OMPRESSION

_UPDATE_DATAFIL? :? user requested update of datafile headers of locally
E_HEADERS_WITH_???? managed datafiles with space information
SPACE_INFORMATI
ON

_UPDDEL_DBA_HAS? :? controls masking of lower order bits in DBA
H_MASK_BITS

_USE_ADAPTIVE_L? :? Adaptively switch between post/wait and polling
OG_FILE_SYNC

_USE_BEST_FIT??? :? use best fit to allocate space
_USE_COLUMN_STA? :? enable the use of column statistics for DDP functions
TS_FOR_FUNCTION

_USE_FIPS_MODE?? :? Enable use of crypographic libraries in FIPS mode
_USE_HIDDEN_PAR? :? use hidden partitions
TITIONS

_USE_HYBRID_ENC? :? Enable platform optimized encryption in hybrid mode
RYPTION_MODE

_USE_ISM???????? :? Enable Shared Page Tables – ISM
_USE_ISM_FOR_PG? :? Use ISM for allocating large extents
A

_USE_NOSEGMENT_? :? use nosegment indexes in explain plan
INDEXES

_USE_PLATFORM_C? :? Enable platform optimized compression implementation
OMPRESSION_LIB

_USE_PLATFORM_E? :? Enable platform optimized encryption implementation
NCRYPTION_LIB

_USE_REALFREE_H? :? use real-free based allocator for PGA memory
EAP

_USE_SEQ_PROCES? :? whether to use process local seq cache
S_CACHE

_USE_SINGLE_LOG? :? Use a single process for redo log writing
_WRITER

_USE_VECTOR_POS? :? use vector post
T

_USE_ZERO_COPY_? :? Should network vector IO interface be used for data
IO????????????????? transfer

_UTLMMIG_TABLE_? :? enable/disable utlmmig table stats gathering at upgrade
STATS_GATHERING

_UTS_FIRST_SEGM? :? Should we retain the first trace segment
ENT_RETAIN

_UTS_FIRST_SEGM? :? Maximum size (in bytes) of first segments
ENT_SIZE

_UTS_TRACE_DISK? :? Trace disk threshold parameter
_THRESHOLD

_UTS_TRACE_SEGM? :? Maximum number of trace segments
ENTS

_UTS_TRACE_SEGM? :? Maximum size (in bytes) of a trace segment
ENT_SIZE

_VALIDATE_FLASH? :? Scan database to validate result of flashback database
BACK_DATABASE

_VALIDATE_METRI? :? Enable/disable SGA Metric Structure validation
C_GROUPS

_VALIDATE_READM? :? validate redo blocks read from in-memory log buffer
EM_REDO

_VENDOR_LIB_LOC? :? Vendor library search root directory
_VERIFY_FG_LOG_? :? LGWR verifies redo checksums generated by foreground
CHECKSUM??????????? processes

_VERIFY_FLASHBA? :? Verify that the redo logs needed for flashback are
CK_REDO???????????? available

_VERIFY_UNDO_QU? :? TRUE – verify consistency of undo quota statistics
OTA

_VERY_LARGE_OBJ? :? upper threshold level of object size for direct reads
ECT_THRESHOLD

_VERY_LARGE_PAR? :? very_large_partitioned_table
TITIONED_TABLE

_VIRTUAL_COLUMN? :? overload virtual columns expression
_OVERLOAD_ALLOW
ED

_VKRM_SCHEDULE_? :? VKRM scheduling interval
INTERVAL

_VKTM_ASSERT_TH? :? soft assert threshold VKTM timer drift
RESH

_WAIT_BREAKUP_T? :? Wait breakup threshold (in centiseconds)
HRESHOLD_CSECS

_WAIT_BREAKUP_T? :? Wait breakup time (in centiseconds)
IME_CSECS

_WAIT_FOR_SYNC?? :? wait for sync on commit MUST BE ALWAYS TRUE
_WAIT_SAMPLES_M? :? Wait Samples maximum sections
AX_SECTIONS

_WAIT_SAMPLES_M? :? Wait Samples maximum time in seconds
AX_TIME_SECS

_WAIT_TRACKER_I? :? Wait Tracker number of seconds per interval
NTERVAL_SECS

_WAIT_TRACKER_N? :? Wait Tracker number of intervals
UM_INTERVALS

_WAIT_YIELD_HP_? :? Wait Yield – High Priority Mode
MODE

_WAIT_YIELD_MOD? :? Wait Yield – Mode
E

_WAIT_YIELD_SLE? :? Wait Yield – Sleep Frequency
EP_FREQ

_WAIT_YIELD_SLE? :? Wait Yield – Sleep Time (in milliseconds)
EP_TIME_MSECS

_WAIT_YIELD_YIE? :? Wait Yield – Yield Frequency
LD_FREQ

_WALK_INSERT_TH? :? maximum number of unusable blocks to walk across
RESHOLD???????????? freelist

_WATCHPOINT_ON?? :? is the watchpointing feature turned on?
_WCR_CONTROL???? :? Oracle internal test WCR parameter used ONLY for
testing!

_WCR_GRV_CACHE_? :? Oracle internal: Set the replay cache size for
SIZE??????????????? WRR$_REPLAY_DATA.

_WCR_SEQ_CACHE_? :? Oracle internal: Set the replay cache size for
SIZE??????????????? WRR$_REPLAY_SEQ_DATA.

_WIDETAB_COMP_E? :? wide table compression enabled
NABLED

_WINDOWFUNC_OPT? :? settings for window function optimizations
IMIZATION_SETTI
NGS

_WITH_SUBQUERY?? :? WITH subquery transformation
_WRITE_CLONES??? :? write clones flag
_XA_INTERNAL_RE? :? number of internal retries for xa transactions
TRIES

_XDS_MAX_CHILD_? :? Maximum number of XDS user-specific child cursors
CURSORS

_XENGEM_DEVNAME? :? override default VM GEM device name used by skgvm
_XENGEM_DIAGMOD? :? set to OFF to disable VM GEM support and
E?????????????????? functionalities

_XENGEM_ENABLED? :? Enable OVM GEM support
_XPL_PEEKED_BIN? :? maximum bytes for logging peeked bind values for
DS_LOG_SIZE???????? V$SQL_PLAN (0 = OFF)

_XPL_TRACE?????? :? Explain Plan tracing parameter
_XSOLAPI_AUTO_M? :? OLAP API lower bound for auto materialization.
ATERIALIZATION_
BOUND

_XSOLAPI_AUTO_M? :? OLAP API behavior for auto materialization
ATERIALIZATION_
TYPE

_XSOLAPI_BUILD_? :? OLAP API output build info to trace file
TRACE

_XSOLAPI_DEBUG_? :? OLAP API debug output disposition
OUTPUT

_XSOLAPI_DENSIF? :? OLAP API cube densification
Y_CUBES

_XSOLAPI_DIMENS? :? OLAP API symmetric overfetch
ION_GROUP_CREAT
ION

_XSOLAPI_DML_TR? :? OLAP API output dml commands and expressions to trace
ACE???????????????? file

_XSOLAPI_FETCH_? :? OLAP API fetch type
TYPE

_XSOLAPI_FIX_VP? :? OLAP API Enable vptr fixing logic in shared server mode
TRS

_XSOLAPI_GENERA? :? OLAP API generates WITH clause?
TE_WITH_CLAUSE

_XSOLAPI_HIERAR? :? OLAP API hierarchy value type
CHY_VALUE_TYPE

_XSOLAPI_LOAD_A? :? When to load OLAP API library at server process start
T_PROCESS_START

_XSOLAPI_MATERI? :? OLAP API min number of rows required to use rowcache in
ALIZATION_ROWCA???? query materialization
CHE_MIN_ROWS_FO
R_USE

_XSOLAPI_MATERI? :? OLAP API Enable source materialization
ALIZE_SOURCES

_XSOLAPI_METADA? :? OLAP API metadata reader mode
TA_READER_MODE

_XSOLAPI_ODBO_M? :? OLAP API uses ODBO mode?
ODE

_XSOLAPI_OPTIMI? :? OLAP API optimizes suppressions?
ZE_SUPPRESSION

_XSOLAPI_OPT_AW? :? OLAP API enables AW position and count optimization?
_POSITION

_XSOLAPI_PRECOM? :? OLAP API precomputes subqueries?
PUTE_SUBQUERY

_XSOLAPI_REMOVE? :? OLAP API removes columns for materialization?
_COLUMNS_FOR_MA
TERIALIZATION

_XSOLAPI_SET_NL? :? OLAP API sets NLS?
S

_XSOLAPI_SHARE_? :? OLAP API share executors?
EXECUTORS

_XSOLAPI_SOURCE? :? OLAP API output Source definitions to trace file
_TRACE

_XSOLAPI_SQL_AL? :? OLAP API multi-join non-base hints
L_MULTI_JOIN_NO
N_BASE_HINTS

_XSOLAPI_SQL_AL? :? OLAP API non-base hints
L_NON_BASE_HINT
S

_XSOLAPI_SQL_AU? :? OLAP API enable automatic dimension hints
TO_DIMENSION_HI
NTS

_XSOLAPI_SQL_AU? :? OLAP API enable automatic measure hints
TO_MEASURE_HINT
S

_XSOLAPI_SQL_DI? :? OLAP API dimension hints
MENSION_HINTS

_XSOLAPI_SQL_EN? :? OLAP API enables AW join?
ABLE_AW_JOIN

_XSOLAPI_SQL_EN? :? OLAP API enables AW QDR merge?
ABLE_AW_QDR_MER
GE

_XSOLAPI_SQL_HI? :? OLAP API generic hints
NTS

_XSOLAPI_SQL_ME? :? OLAP API measure hints
ASURE_HINTS

_XSOLAPI_SQL_MI? :? OLAP API SQL MINUS threshold
NUS_THRESHOLD

_XSOLAPI_SQL_OP? :? OLAP API enable optimization
TIMIZE

_XSOLAPI_SQL_PR? :? OLAP API prepare statement cache size
EPARE_STMT_CACH
E_SIZE

_XSOLAPI_SQL_RE? :? OLAP API enable remove unused columns optimizations
MOVE_COLUMNS

_XSOLAPI_SQL_RE? :? OLAP API result set cache size
SULT_SET_CACHE_
SIZE

_XSOLAPI_SQL_SY? :? OLAP API enable symmetric predicate for dimension
MMETRIC_PREDICA???? groups
TE

_XSOLAPI_SQL_TO? :? OLAP API top dimension hints
P_DIMENSION_HIN
TS

_XSOLAPI_SQL_TO? :? OLAP API top measure hints
P_MEASURE_HINTS

_XSOLAPI_SQL_US? :? OLAP API enable bind variables optimization
E_BIND_VARIABLE
S

_XSOLAPI_STRING? :? OLAP API stringifies order levels?
IFY_ORDER_LEVEL
S

_XSOLAPI_SUPPOR? :? OLAP API MTM mapping classes supported?
T_MTM

_XSOLAPI_SUPPRE? :? OLAP API suppression AW mask threshold
SSION_AW_MASK_T
HRESHOLD

_XSOLAPI_SUPPRE? :? OLAP API suppression chunk size
SSION_CHUNK_SIZ
E

_XSOLAPI_USE_MO? :? OLAP API uses models?
DELS

_XSOLAPI_USE_OL? :? OLAP API uses OLAP DML?
AP_DML

_XSOLAPI_USE_OL? :? OLAP API uses OLAP DML for rank?
AP_DML_FOR_RANK

_XS_CLEANUP_TAS? :? Triton Session Cleanup
K

_XS_DISPATCHER_? :? XS dispatcher only mode
ONLY

_XTBUFFER_SIZE?? :? buffer size in KB needed for populate/query operation
_XTTS_ALLOW_PRE? :? allow cross platform for pre10 compatible tablespace
10

_XTTS_SET_PLATF? :? set cross platform info during file header read
ORM_INFO

_XT_COVERAGE???? :? external tables code coverage parameter
_XT_TRACE??????? :? external tables trace parameter
_ZONEMAP_CONTRO? :? control different uses/algorithms related to zonemaps
L

_ZONEMAP_STALEN? :? control the staleness tracking of zonemaps via trigger
ESS_TRACKING

_ZONEMAP_USE_EN? :? enable the use of zonemaps for IO pruning
ABLED

__DATA_TRANSFER? :? Actual size of data transfer cache
_CACHE_SIZE

__DB_CACHE_SIZE? :? Actual size of DEFAULT buffer pool for standard block
size buffers

__DG_BROKER_SER? :? service names for broker use
VICE_NAMES

__JAVA_POOL_SIZ? :? Actual size in bytes of java pool
E

__LARGE_POOL_SI? :? Actual size in bytes of large pool
ZE

__ORACLE_BASE??? :? ORACLE_BASE
__PGA_AGGREGATE? :? Current target size for the aggregate PGA memory
_TARGET???????????? consumed

__SGA_TARGET???? :? Actual size of SGA
__SHARED_IO_POO? :? Actual size of shared IO pool
L_SIZE

__SHARED_POOL_S? :? Actual size in bytes of shared pool
IZE

__STREAMS_POOL_? :? Actual size in bytes of streams pool
SIZE

2984 rows selected.

References: Oracle Documentation

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