Oracle9i重建与切换临时表空间

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