Oracle 查看表空间的大小及使用情况sql语句

SELECT a.tablespace_name "表空间名称",total / (1024 * 1024) "表空间大小(M)",free / (1024 * 1024) "表空间剩余大小(M)",(total - free) / (1024 * 1024 ) "表空间使用大小(M)",total / (1024 * 1024 * 1024) "表空间大小(G)",free / (1024 * 1024 * 1024) "表空间剩余大小(G)",(total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)",round((total - free) / total,4) * 100 "使用率 %" 
FROM (SELECT tablespace_name,SUM(bytes) free 
FROM dba_free_space 
GROUP BY tablespace_name) a,(SELECT tablespace_name,SUM(bytes) total 
FROM dba_data_files 
GROUP BY tablespace_name) b 
WHERE a.tablespace_name = b.tablespace_name

ALTER DATABASE DATAFILE '/表空间路径/表空间文件名称.dbf' RESIZE 10240M；

SELECT FILE_NAME,TABLESPACE_NAME,AUTOEXTENSIBLE FROM dba_data_files;

ALTER DATABASE DATAFILE '/表空间路径/表空间文件名称.dbf' AUTOEXTEND ON;//打开自动增长
ALTER DATABASE DATAFILE '/表空间路径/表空间文件名称.dbf' AUTOEXTEND ON NEXT 200M ;//每次自动增长200M
ALTER DATABASE DATAFILE '/表空间路径/表空间文件名称.dbf' AUTOEXTEND ON NEXT 200M MAXSIZE 1024M;//每次自动增长200M，表空间最大不超过1G

SELECT t.tablespace_name,round(SUM(bytes / (1024 * 1024)),0) ts_size 
FROM dba_tablespaces t,dba_data_files d 
WHERE t.tablespace_name = d.tablespace_name 
GROUP BY t.tablespace_name;

SELECT tablespace_name,file_id,file_name,round(bytes / (1024 * 1024),0) total_space 
FROM dba_data_files 
ORDER BY tablespace_name;

SELECT segment_name,tablespace_name,r.status,(initial_extent / 1024) initialextent,(next_extent / 1024) nextextent,max_extents,v.curext curextent 
FROM dba_rollback_segs r,v$rollstat v 
WHERE r.segment_id = v.usn(+) 
ORDER BY segment_name;

SELECT NAME FROM v$controlfile;

SELECT MEMBER FROM v$logfile;

SELECT SUM(bytes) / (1024 * 1024) AS free_space,tablespace_name 
FROM dba_free_space 
GROUP BY tablespace_name; 
SELECT a.tablespace_name,a.bytes total,b.bytes used,c.bytes free,(b.bytes * 100) / a.bytes "% USED ",(c.bytes * 100) / a.bytes "% FREE " 
FROM sys.sm$ts_avail a,sys.sm$ts_used b,sys.sm$ts_free c 
WHERE a.tablespace_name = b.tablespace_name 
AND a.tablespace_name = c.tablespace_name;

SELECT owner,object_type,status,COUNT(*) count# 
FROM all_objects 
GROUP BY owner,status;

SELECT version 
FROM product_component_version 
WHERE substr(product,1,6) = 'Oracle';

SELECT created,log_mode,log_mode FROM v$database; 


--1G=1024MB 
--1M=1024KB 
--1K=1024Bytes 
--1M=11048576Bytes 
--1G=1024*11048576Bytes=11313741824Bytes 
SELECT a.tablespace_name "表空间名",total "表空间大小",free "表空间剩余大小",(total - free) "表空间使用大小",SUM(bytes) total 
FROM dba_data_files 
GROUP BY tablespace_name) b 
WHERE a.tablespace_name = b.tablespace_name

（编辑：李大同）

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