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