Oracle表空间操作详解-入门基础

建立表空间CREATE TABLESPACE data01DATAFILE '/oracle/oradata/db/DATA01.dbf' SIZE 500MUNIFORM SIZE 128k; #指定区尺寸为128k,如不指定，区尺寸默认为64k

删除表空间DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES;

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

移动表至另一表空间alter table move tablespace room1;

一、建立表空间CREATE TABLESPACE data01DATAFILE '/oracle/oradata/db/DATA01.dbf' SIZE 500MUNIFORM SIZE 128k; #指定区尺寸为128k,如不指定，区尺寸默认为64k

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

#注意：在OPEN状态下某些时刻只能用一个UNDO表空间，如果要用新建的表空间，必须切换到该表空间:

ALTER SYSTEM SET undo_tablespace=UNDOTBS02;

三、建立临时表空间CREATE TEMPORARY TABLESPACE temp_dataTEMPFILE '/oracle/oradata/db/TEMP_DATA.dbf' SIZE 50M

四、改变表空间状态

1.使表空间脱机ALTER TABLESPACE game OFFLINE; 如果是意外删除了数据文件，则必须带有RECOVER选项ALTER TABLESPACE game OFFLINE FOR RECOVER;

2.使表空间联机ALTER TABLESPACE game ONLINE;

3.使数据文件脱机ALTER DATABASE DATAFILE 3 OFFLINE;

4.使数据文件联机ALTER DATABASE DATAFILE 3 ONLINE;

5.使表空间只读ALTER TABLESPACE game READ ONLY;

6.使表空间可读写ALTER TABLESPACE game READ WRITE;

五、删除表空间DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES;

六、扩展表空间

首先查看表空间的名字和所属文件select tablespace_name, file_id, file_name,round(bytes/(1024*1024),0) total_spacefrom dba_data_filesorder by tablespace_name;

1.增加数据文件ALTER TABLESPACE gameADD DATAFILE '/oracle/oradata/db/GAME02.dbf' SIZE 1000M;

2.手动增加数据文件尺寸ALTER DATABASE DATAFILE '/oracle/oradata/db/GAME.dbf'RESIZE 4000M;

3.设定数据文件自动扩展ALTER DATABASE DATAFILE '/oracle/oradata/db/GAME.dbf'AUTOEXTEND ON NEXT 100MMAXSIZE 10000M;

4.设定后查看表空间信息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;