切换undo表空间和temp表空间
1 切换undo表空间
1.1查看undo表空间位置及使用大小
SQL> col FILE_NAME for a60
SQL> select file_name,bytes/1024/1024 from dba_data_files where tablespace_name like 'UNDOTBS1';
FILE_NAME BYTES/1024/1024
------------------------------------------------------------ ---------------
/u01/app/oracle/oradata/lottery/undotbs01.dbf 2048
注：
1.2查询回滚段使用状态
SQL> select usn,xacts,rssize/1024/1024/1024,hwmsize/1024/1024/1024,shrinks
2 from v$rollstat order by rssize;
USN XACTS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------------- ---------------------- ----------
0 0 .000358582 .000358582 0
25 0 .049797058 .049797058 15
22 0 .050773621 .050773621 0
19 0 .051750183 .051750183 61
23 0 .060539246 .060539246 0
13 0 .061515808 .061515808 0
15 0 .078117371 .078117371 0
12 0 .078117371 .078117371 0
10 0 .078422546 .078422546 0
4 0 .080070496 .080070496 0
1 0 .086112976 .086112976 71
USN XACTS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------------- ---------------------- ----------
7 0 .086845398 .086845398 0
11 0 .093742371 .093742371 0
5 0 .101554871 .101554871 0
3 0 .101554871 .101554871 0
9 0 .101554871 .101554871 0
8 0 .101676941 .101676941 0
6 0 .101676941 .101676941 0
2 0 .101860046 .101860046 0
19 rows selected.
1.3创建新的undo表空间
SQL> CREATE SMALLFILE UNDO TABLESPACE "UNDOTBS02" DATAFILE
'/u01/app/oracle/oradata/lottery/undotbs21.dbf' SIZE 10M
AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED;
Tablespace created.
1.4使用新的undo表空间
SQL> alter system set undo_tablespace=UNDOTBS02 scope=both;
System altered.
1.5查看原表空间使用情况
等带SHRINKS全部为0时删除原undo表空间
SQL> set line 200
SQL> select usn,xacts,status,rssize/1024/1024/1024,hwmsize/1024/1024/1024,shrinks
2 from v$rollstat order by rssize;
USN XACTS STATUS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------- --------------------- ---------------------- ----------
28 0 ONLINE .000114441 .000114441 0
44 0 ONLINE .000114441 .000114441 0
29 0 ONLINE .000114441 .000114441 0
30 0 ONLINE .000114441 .000114441 0
31 0 ONLINE .000114441 .000114441 0
32 0 ONLINE .000114441 .000114441 0
33 0 ONLINE .000114441 .000114441 0
34 0 ONLINE .000114441 .000114441 0
35 0 ONLINE .000114441 .000114441 0
36 0 ONLINE .000114441 .000114441 0
37 0 ONLINE .000114441 .000114441 0
USN XACTS STATUS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------- --------------------- ---------------------- ----------
38 0 ONLINE .000114441 .000114441 0
39 0 ONLINE .000114441 .000114441 0
40 0 ONLINE .000114441 .000114441 0
41 0 ONLINE .000114441 .000114441 0
42 0 ONLINE .000114441 .000114441 0
43 0 ONLINE .000114441 .000114441 0
0 0 ONLINE .000358582 .000358582 0
18 rows selected.
1.6删除原临时表空间同时删除数据文件
SQL> drop tablespace undotbs1 including contents and datafiles;
Tablespace dropped.
1.7重新创建原undo表空间
SQL> CREATE SMALLFILE UNDO TABLESPACE "undotbs1" DATAFILE
'/u01/app/oracle/oradata/lottery/undotbs01.dbf' SIZE 10M
AUTOEXTEND ON NEXT 100M MAXSIZE 16G;
Tablespace created.
1.8查看当前undo表空间使用情况
SQL> select usn,xacts,rssize/1024/1024/1024,hwmsize/1024/1024/1024,shrinks
2 from v$rollstat order by rssize;
USN XACTS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------------- ---------------------- ----------
28 0 .000114441 .000114441 0
44 0 .000114441 .000114441 0
29 0 .000114441 .000114441 0
30 0 .000114441 .000114441 0
31 0 .000114441 .000114441 0
32 0 .000114441 .000114441 0
33 0 .000114441 .000114441 0
34 0 .000114441 .000114441 0
35 0 .000114441 .000114441 0
36 0 .000114441 .000114441 0
37 0 .000114441 .000114441 0
USN XACTS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------------- ---------------------- ----------
38 0 .000114441 .000114441 0
39 0 .000114441 .000114441 0
40 0 .000114441 .000114441 0
41 0 .000114441 .000114441 0
42 0 .000114441 .000114441 0
43 0 .000114441 .000114441 0
0 0 .000358582 .000358582 0
18 rows selected.
1.9切换当前undo表空间为原undo表空间
SQL> alter system set undo_tablespace=undotbs1 scope=both;
System altered.
1.10查看当前undo表空间使用状态
SQL> select usn,xacts,status,rssize/1024/1024/1024,hwmsize/1024/1024/1024,shrinks
2 from v$rollstat order by rssize;
USN XACTS STATUS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------- --------------------- ---------------------- ----------
1 0 ONLINE .000114441 .000114441 0
17 0 ONLINE .000114441 .000114441 0
2 0 ONLINE .000114441 .000114441 0
3 0 ONLINE .000114441 .000114441 0
4 0 ONLINE .000114441 .000114441 0
5 0 ONLINE .000114441 .000114441 0
6 0 ONLINE .000114441 .000114441 0
7 0 ONLINE .000114441 .000114441 0
8 0 ONLINE .000114441 .000114441 0
9 0 ONLINE .000114441 .000114441 0
10 0 ONLINE .000114441 .000114441 0
USN XACTS STATUS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
---------- ---------- --------------- --------------------- ---------------------- ----------
11 0 ONLINE .000114441 .000114441 0
12 0 ONLINE .000114441 .000114441 0
13 0 ONLINE .000114441 .000114441 0
14 0 ONLINE .000114441 .000114441 0
15 0 ONLINE .000114441 .000114441 0
16 0 ONLINE .000114441 .000114441 0
0 0 ONLINE .000358582 .000358582 0
18 rows selected.
1.11删除undo2表空间
SQL> drop tablespace UNDOTBS02 including contents and datafiles;
Tablespace dropped.
2切换temp表空间
2.1查询当前temp表空间使用情况
SQL> select username,temporary_tablespace from dba_users;
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
MGMT_VIEW TEMP
SYS TEMP
SYSTEM TEMP
DBSNMP TEMP
SYSMAN TEMP
LOTTERY TEMP
SIMULATOR_TJ TEMP
LOTTERY_GXLD TEMP
SIMULATOR_GX TEMP
LOTTERY_TJLD TEMP
OUTLN TEMP
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
FLOWS_FILES TEMP
MDSYS TEMP
ORDSYS TEMP
EXFSYS TEMP
WMSYS TEMP
APPQOSSYS TEMP
APEX_030200 TEMP
OWBSYS_AUDIT TEMP
ORDDATA TEMP
CTXSYS TEMP
ANONYMOUS TEMP
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
XDB TEMP
ORDPLUGINS TEMP
OWBSYS TEMP
SI_INFORMTN_SCHEMA TEMP
OLAPSYS TEMP
SCOTT TEMP
ORACLE_OCM TEMP
XS$NULL TEMP
MDDATA TEMP
DIP TEMP
APEX_PUBLIC_USER TEMP
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
SPATIAL_CSW_ADMIN_USR TEMP
SPATIAL_WFS_ADMIN_USR TEMP
35 rows selected.
2.2查询temp表空间位置
SQL> select name from v$tempfile;
NAME
----------------------------------------------------------------------------------------
/u01/app/oracle/oradata/lottery/temp01.dbf
2.3创建新的临时表空间
SQL> create temporary tablespace temp2 tempfile
'/u01/app/oracle/oradata/lottery/temp02.dbf' size 20m;
Tablespace created.
2.4修改默认temp表空间为新的临时表空间
SQL> alter database default temporary tablespace temp2;
Database altered.
2.5查看当前临时表空间使用情况
SQL> select username,temporary_tablespace from dba_users;
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
OUTLN TEMP2
SYSTEM TEMP2
SYS TEMP2
MGMT_VIEW TEMP2
OLAPSYS TEMP2
SI_INFORMTN_SCHEMA TEMP2
OWBSYS TEMP2
ORDPLUGINS TEMP2
XDB TEMP2
ANONYMOUS TEMP2
CTXSYS TEMP2
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
ORDDATA TEMP2
OWBSYS_AUDIT TEMP2
APEX_030200 TEMP2
APPQOSSYS TEMP2
WMSYS TEMP2
EXFSYS TEMP2
ORDSYS TEMP2
MDSYS TEMP2
FLOWS_FILES TEMP2
SYSMAN TEMP2
DBSNMP TEMP2
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
SPATIAL_WFS_ADMIN_USR TEMP2
SPATIAL_CSW_ADMIN_USR TEMP2
APEX_PUBLIC_USER TEMP2
DIP TEMP2
MDDATA TEMP2
XS$NULL TEMP2
ORACLE_OCM TEMP2
SCOTT TEMP2
LOTTERY_TJLD TEMP2
SIMULATOR_GX TEMP2
LOTTERY_GXLD TEMP2
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
SIMULATOR_TJ TEMP2
LOTTERY TEMP2
35 rows selected.
2.6删除原临时表空间
这里数据库hang住，因为临时表空间正在被使用
SQL> drop tablespace temp including contents and datafiles;
2.7查询哪些sql在使用临时表空间
开启另外一个session查询
SQL> select se.username,se.sid,se.serial#,su.extents,su.blocks*to_number(rtrim(p.value))as space,
2 tablespace,segtype,sql_text
3 from v$sort_usage su,v$parameter p,v$session se,v$sql s
4 where p.name='db_block_size' and su.session_addr=se.saddr and s.hash_value=su.sqlhash
5 and s.address=su.sqladdr
6 order by se.username,se.sid;
USERNAME SID SERIAL# TABLESPACE SQL_TEXT
-------- ------------------------ ---------------------------------------------------
SYS 187 55619 TEMP2 select username,temporary_tablespace from dba_users
SYS 187 55619 TEMP2 select username,temporary_tablespace from dba_users
2.8 kill掉这些sql语句
alter system kill session '187,55619';
2.9查看hang住的session
SQL> drop tablespace temp including contents and datafiles;
drop tablespace temp including contents and datafiles
*
ERROR at line 1:
ORA-00028: your session has been killed
ORA-00028: your session has been killed
2.10重新删除temp表空间
在hang住的session删除
SQL> drop tablespace temp including contents and datafiles;
ERROR:
ORA-03114: not connected to ORACLE
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
oracle@db100:/u01/app/oracle/oradata/lottery$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Sun Oct 21 22:23:05 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> drop tablespace temp including contents and datafiles;
Tablespace dropped.
2.11查看当前临时表空间使用情况
SQL> select username,temporary_tablespace from dba_users;
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
OUTLN TEMP2
SYSTEM TEMP2
SYS TEMP2
MGMT_VIEW TEMP2
OLAPSYS TEMP2
SI_INFORMTN_SCHEMA TEMP2
OWBSYS TEMP2
ORDPLUGINS TEMP2
XDB TEMP2
ANONYMOUS TEMP2
CTXSYS TEMP2
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
ORDDATA TEMP2
OWBSYS_AUDIT TEMP2
APEX_030200 TEMP2
APPQOSSYS TEMP2
WMSYS TEMP2
EXFSYS TEMP2
ORDSYS TEMP2
MDSYS TEMP2
FLOWS_FILES TEMP2
SYSMAN TEMP2
DBSNMP TEMP2
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
SPATIAL_WFS_ADMIN_USR TEMP2
SPATIAL_CSW_ADMIN_USR TEMP2
APEX_PUBLIC_USER TEMP2
DIP TEMP2
MDDATA TEMP2
XS$NULL TEMP2
ORACLE_OCM TEMP2
SCOTT TEMP2
LOTTERY_TJLD TEMP2
SIMULATOR_GX TEMP2
LOTTERY_GXLD TEMP2
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
SIMULATOR_TJ TEMP2
LOTTERY TEMP2
35 rows selected.
2.12重新创建原临时表空间
SQL> create temporary tablespace temp tempfile
'/u01/app/oracle/oradata/lottery/temp01.dbf' SIZE 10M
AUTOEXTEND ON NEXT 100M MAXSIZE 16G;
Tablespace created.
2.13还原默认临时表空间为temp
SQL> alter database default temporary tablespace temp;
Database altered.
2.14查看当前默认临时表空间
SQL> select username,temporary_tablespace from dba_users;
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
OUTLN TEMP
SYSTEM TEMP
SYS TEMP
MGMT_VIEW TEMP
OLAPSYS TEMP
SI_INFORMTN_SCHEMA TEMP
OWBSYS TEMP
ORDPLUGINS TEMP
XDB TEMP
ANONYMOUS TEMP
CTXSYS TEMP
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
ORDDATA TEMP
OWBSYS_AUDIT TEMP
APEX_030200 TEMP
APPQOSSYS TEMP
WMSYS TEMP
EXFSYS TEMP
ORDSYS TEMP
MDSYS TEMP
FLOWS_FILES TEMP
SYSMAN TEMP
DBSNMP TEMP
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
SPATIAL_WFS_ADMIN_USR TEMP
SPATIAL_CSW_ADMIN_USR TEMP
APEX_PUBLIC_USER TEMP
DIP TEMP
MDDATA TEMP
XS$NULL TEMP
ORACLE_OCM TEMP
SCOTT TEMP
LOTTERY_TJLD TEMP
SIMULATOR_GX TEMP
LOTTERY_GXLD TEMP
USERNAME TEMPORARY_TABLESPACE
------------------------------ ------------------------------
SIMULATOR_TJ TEMP
LOTTERY TEMP
35 rows selected.
2.15查看临时表空间是否有sql在使用
SQL> select se.username,se.sid,se.serial#,su.extents,su.blocks*to_number(rtrim(p.value))as space,
2 tablespace,segtype,sql_text
3 from v$sort_usage su,v$parameter p,v$session se,v$sql s
4 where p.name='db_block_size' and su.session_addr=se.saddr and s.hash_value=su.sqlhash
5 and s.address=su.sqladdr
6 order by se.username,se.sid;
USERNAME SID SERIAL# TABLESPACE SQL_TEXT
-------- ------------------------ ---------------------------------------------------
SYS 187 55739 TEMP2 select username,temporary_tablespace from dba_users
SYS 187 55739 TEMP2 select username,temporary_tablespace from dba_users
2.16 kill这些sql语句
alter system kill session '187,55739';
2.17删除temp2临时表空间
切换成功
SQL> drop tablespace temp2 including contents and datafiles;
Tablespace dropped.