Oracle表空間操作詳解-入門基礎

建立表空間CREATE TABLESPACE data01DATAFILE '/oracle/oradata/db/DATA01.dbf' SIZE 500MUNIFORM SIZE 128k; #指定區尺寸為128k,如不指定，區尺寸默認為64k

刪除表空間DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES;

修改表空間大小alter database datafile '/path/NADDate05.dbf' resize 100M

移動表至另一表空間alter table move tablespace room1;

一、建立表空間CREATE TABLESPACE data01DATAFILE '/oracle/oradata/db/DATA01.dbf' SIZE 500MUNIFORM SIZE 128k; #指定區尺寸為128k,如不指定，區尺寸默認為64k

二、建立UNDO表空間CREATE UNDO TABLESPACE UNDOTBS02DATAFILE '/oracle/oradata/db/UNDOTBS02.dbf' SIZE 50M

#注意：在OPEN狀態下某些時刻只能用一個UNDO表空間，如果要用新建的表空間，必須切換到該表空間:

ALTER SYSTEM SET undo_tablespace=UNDOTBS02;

三、建立臨時表空間CREATE TEMPORARY TABLESPACE temp_dataTEMPFILE '/oracle/oradata/db/TEMP_DATA.dbf' SIZE 50M

四、改變表空間狀態

1.使表空間脫機ALTER TABLESPACE game OFFLINE; 如果是意外刪除了數據文件，則必須帶有RECOVER選項ALTER TABLESPACE game OFFLINE FOR RECOVER;

2.使表空間聯機ALTER TABLESPACE game ONLINE;

3.使數據文件脫機ALTER DATABASE DATAFILE 3 OFFLINE;

4.使數據文件聯機ALTER DATABASE DATAFILE 3 ONLINE;

5.使表空間只讀ALTER TABLESPACE game READ ONLY;

6.使表空間可讀寫ALTER TABLESPACE game READ WRITE;

五、刪除表空間DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES;

六、擴展表空間

首先查看表空間的名字和所屬文件select tablespace_name, file_id, file_name,round(bytes/(1024*1024),0) total_spacefrom dba_data_filesorder by tablespace_name;

1.增加數據文件ALTER TABLESPACE gameADD DATAFILE '/oracle/oradata/db/GAME02.dbf' SIZE 1000M;

2.手動增加數據文件尺寸ALTER DATABASE DATAFILE '/oracle/oradata/db/GAME.dbf'RESIZE 4000M;

3.設定數據文件自動擴展ALTER DATABASE DATAFILE '/oracle/oradata/db/GAME.dbf'AUTOEXTEND ON NEXT 100MMAXSIZE 10000M;

4.設定后查看表空間信息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 CWHERE A.TABLESPACE_NAME=B.TABLESPACE_NAME AND A.TABLESPACE_NAME=C.TABLESPACE_NAME;