oracle创建用户，分配表空间，表空间维护

创建表空间和临时表空间：

create tablespace test
logging
datafile 'D:/tablespace/test.dbf' 
size 50m 
autoextend on 
next 1m maxsize 20480m  
extent management local;


create temporary tablespace test_temp
tempfile 'D:/tablespace/test_temp.dbf'
size 50m 
autoextend on 
next 1m maxsize 2048m  
extent management local;

create user test identified by test
default tablespace test
temporary tablespace test_temp;

grant all privileges to test;(所有权限)
grant resource,connect,dba to test;

SELECT tbs 表空间名,sum(totalM) 总共大小M,sum(usedM) 已使用空间M,sum(remainedM) 剩余空间M,sum(usedM)/sum(totalM)*100 已使用百分比,sum(remainedM)/sum(totalM)*100 剩余百分比                            
    FROM(                                            
     SELECT b.file_id ID,b.tablespace_name tbs,b.file_name name,b.bytes/1024/1024 totalM,(b.bytes-sum(nvl(a.bytes,0)))/1024/1024 usedM,sum(nvl(a.bytes,0)/1024/1024) remainedM,0)/(b.bytes)*100),(100 - (sum(nvl(a.bytes,0))/(b.bytes)*100))                            
     FROM dba_free_space a,dba_data_files b                            
     WHERE a.file_id = b.file_id                                
     GROUP BY b.tablespace_name,b.file_name,b.file_id,b.bytes                    
     ORDER BY b.tablespace_name                                
    )                                            
    GROUP BY tbs  

alter database datafile  'D:APPADMINISTRATORORADATAORACLEtest.DBF'  resize 5000M;
 select  file_name from dba_data_files where tablespace_name = 'test_data';

修改表空间大小不限制，自动增长
alter database datafile 'F:APPORACLEORADATAORCLtest_DATA.DBF' autoextend on maxsize unlimited;

ALTER TABLESPACE aaa

ADD DATAFILE 'E:APPORACLE11GR2ORADATAORCLtest_DATA02.DBF'

SIZE 32767M;

（编辑：李大同）

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