Oracle9i中如何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:
$ 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
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