Oracle中如何重建与切换临时表空间

Oracle9i中如何重建与切换临时表空间

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作者：eygle |English
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链接：http://www.eygle.com/archives/2006/04/oracle9i_default_temporary_tablespace.html

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Oracle9i引入了全局缺省临时表空间,缺省的如果不指定用户临时表空间,Oracle会为用户指定这个缺省临时表空间.

首先查询用户的缺省临时表空间:

[oracle@jumper oracle]$ sqlplus "/ as sysdba" SQL*Plus: Release 9.2.0.4.0 - Production on Wed Apr 12 11:11:43 2006 Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved. Connected to: Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production With the Partitioning option JServer Release 9.2.0.4.0 - Production SQL> select username,temporary_tablespace from dba_users; USERNAME TEMPORARY_TABLESPACE ------------------------------ ------------------------------ SYS TEMP2 SYSTEM TEMP2 OUTLN TEMP2 EYGLE TEMP2 CSMIG TEMP2 TEST TEMP2 REPADMIN TEMP2 ...... 13 rows selected. SQL> select name from v$tempfile; NAME --------------------------------------------------------------------- /opt/oracle/oradata/conner/temp02.dbf /opt/oracle/oradata/conner/temp03.dbf

重建新的临时表空间并进行切换:

SQL> create temporary tablespace temp tempfile '/opt/oracle/oradata/conner/temp1.dbf' size 10M; Tablespace created. SQL> alter tablespace temp add tempfile '/opt/oracle/oradata/conner/temp2.dbf' size 20M; Tablespace altered. SQL> alter database default temporary tablespace temp; Database altered. SQL> select username,temporary_tablespace from dba_users; USERNAME TEMPORARY_TABLESPACE ------------------------------ ------------------------------ SYS TEMP SYSTEM TEMP OUTLN TEMP EYGLE TEMP CSMIG TEMP TEST TEMP REPADMIN TEMP ....... 13 rows selected.

如果原临时表空间无用户使用,我们可以删除该表空间:

SQL> drop tablespace temp2;

Tablespace dropped.

SQL>

SQL> select name from v$tempfile;

NAME

---------------------------------------------------------------

/opt/oracle/oradata/conner/temp1.dbf

/opt/oracle/oradata/conner/temp2.dbf

SQL> select file_name,tablespace_name,bytes/1024/1024 MB,autoextensible

2 from dba_temp_files

3 /

FILE_NAME TABLESPACE_NAME MB AUTOEXTENSIBLE

-------------------------------------- -------------------- ---------- --------------

/opt/oracle/oradata/conner/temp2.dbf TEMP 20 NO

/opt/oracle/oradata/conner/temp1.dbf TEMP 10 NO