首页 > 代码库 > oracle增加表空间的四种方法，查询表空间使用情况

oracle增加表空间的四种方法，查询表空间使用情况

2024-08-07 19:22:12   210人阅读

增加表空间大小的四种方法
Meathod1：给表空间增加数据文件
ALTER TABLESPACE app_data ADD DATAFILE
‘D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP03.DBF‘ SIZE 50M;
 
Meathod2：新增数据文件，并且允许数据文件自动增长
ALTER TABLESPACE app_data ADD DATAFILE
‘D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP04.DBF‘ SIZE 50M
AUTOEXTEND ON NEXT 5M MAXSIZE 100M;
 
Meathod3：允许已存在的数据文件自动增长
ALTER DATABASE DATAFILE ‘D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP03.DBF‘
AUTOEXTEND ON NEXT 5M MAXSIZE 100M;
 
Meathod4：手工改变已存在数据文件的大小
ALTER DATABASE DATAFILE ‘D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP02.DBF‘
RESIZE 100M;

--查询表空间使用情况SELECT Upper(F.TABLESPACE_NAME)         "表空间名",       D.TOT_GROOTTE_MB                 "表空间大小(M)",       D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",       To_char(Round(( D.TOT_GROOTTE_MB - F.TOTAL_BYTES ) / D.TOT_GROOTTE_MB * 100, 2), ‘990.99‘)       || ‘%‘                           "使用比",       F.TOTAL_BYTES                    "空闲空间(M)",       F.MAX_BYTES                      "最大块(M)"FROM   (SELECT TABLESPACE_NAME,               Round(Sum(BYTES) / ( 1024 * 1024 ), 2) TOTAL_BYTES,               Round(Max(BYTES) / ( 1024 * 1024 ), 2) MAX_BYTES        FROM   SYS.DBA_FREE_SPACE        GROUP  BY TABLESPACE_NAME) F,       (SELECT DD.TABLESPACE_NAME,               Round(Sum(DD.BYTES) / ( 1024 * 1024 ), 2) TOT_GROOTTE_MB        FROM   SYS.DBA_DATA_FILES DD        GROUP  BY DD.TABLESPACE_NAME) DWHERE  D.TABLESPACE_NAME = F.TABLESPACE_NAMEORDER  BY 1--查询表空间的free spaceselect tablespace_name, count(*) AS extends,round(sum(bytes) / 1024 / 1024, 2) AS MB,sum(blocks) AS blocks from dba_free_space group BY tablespace_name;--查询表空间的总容量select tablespace_name, sum(bytes) / 1024 / 1024 as MB from dba_data_files group by tablespace_name;--查询表空间使用率SELECT total.tablespace_name,       Round(total.MB, 2)           AS Total_MB,       Round(total.MB - free.MB, 2) AS Used_MB,       Round(( 1 - free.MB / total.MB ) * 100, 2)       || ‘%‘                       AS Used_PctFROM   (SELECT tablespace_name,               Sum(bytes) / 1024 / 1024 AS MB        FROM   dba_free_space        GROUP  BY tablespace_name) free,       (SELECT tablespace_name,               Sum(bytes) / 1024 / 1024 AS MB        FROM   dba_data_files        GROUP  BY tablespace_name) totalWHERE  free.tablespace_name = total.tablespace_name;
--查出占用的进程select username,sid,serial# from v$session --删掉进程alter system kill session‘156,108‘;--删除用户drop user psyy cascade;

 

oracle增加表空间的四种方法，查询表空间使用情况


联系
我们