以SYS用户登录Oracle 自带的SQL*PLUS的方法: sys oracle orcl as sysdba Oracle的UNDOTBS01.DBF文件太大的解决办法 :-- 创建一个新的小空间的UNDO TABLESPACE CREATE UNDO TABLESPACE UNDOTBS2 DATAFILE 'D:\ORACLE\ORADATA\ORCL\UNDOTBS02.DBF' SIZE 100M REUSE AUTOEXTEND ON; -- 设置新的表空间为系统UNDO_TABLESPACE ALTER SYSTEM SET UNDO_TABLESPACE=UNDOTBS2; -- DROP 旧的表空间 DROP TABLESPACE UNDOTBS1 INCLUDING CONTENTS; SELECT * FROM DBA_TABLESPACES;完成后删除D:\ORACLE\ORADATA\ORCL\UNDOTBS01.DBF,然后进行出下操作:-- 创建一个新的小空间的UNDO TABLESPACE CREATE UNDO TABLESPACE UNDOTBS1 DATAFILE 'D:\ORACLE\ORADATA\ORCL\UNDOTBS01.DBF' SIZE 100M REUSE AUTOEXTEND ON; -- 设置新的表空间为系统UNDO_TABLESPACE ALTER SYSTEM SET UNDO_TABLESPACE=UNDOTBS1; -- DROP 旧的表空间 DROP TABLESPACE UNDOTBS2 INCLUDING CONTENTS; --查看所有表空间的情况 SELECT * FROM DBA_TABLESPACES;完成后删除D:\ORACLE\ORADATA\ORCL\UNDOTBS02.DBF。 如果临时表空间很大处理的方法类似。
sys
oracle
orcl as sysdba
Oracle的UNDOTBS01.DBF文件太大的解决办法 :-- 创建一个新的小空间的UNDO TABLESPACE
CREATE UNDO TABLESPACE UNDOTBS2 DATAFILE 'D:\ORACLE\ORADATA\ORCL\UNDOTBS02.DBF' SIZE 100M REUSE AUTOEXTEND ON;
-- 设置新的表空间为系统UNDO_TABLESPACE
ALTER SYSTEM SET UNDO_TABLESPACE=UNDOTBS2;
-- DROP 旧的表空间
DROP TABLESPACE UNDOTBS1 INCLUDING CONTENTS;
SELECT * FROM DBA_TABLESPACES;完成后删除D:\ORACLE\ORADATA\ORCL\UNDOTBS01.DBF,然后进行出下操作:-- 创建一个新的小空间的UNDO TABLESPACE
CREATE UNDO TABLESPACE UNDOTBS1 DATAFILE 'D:\ORACLE\ORADATA\ORCL\UNDOTBS01.DBF' SIZE 100M REUSE AUTOEXTEND ON;
-- 设置新的表空间为系统UNDO_TABLESPACE
ALTER SYSTEM SET UNDO_TABLESPACE=UNDOTBS1;
-- DROP 旧的表空间
DROP TABLESPACE UNDOTBS2 INCLUDING CONTENTS;
--查看所有表空间的情况
SELECT * FROM DBA_TABLESPACES;完成后删除D:\ORACLE\ORADATA\ORCL\UNDOTBS02.DBF。
如果临时表空间很大处理的方法类似。
SQL>show parameter undo_tablespace;
NAME TYPE VALUE
———————————— ———– ——————————
undo_tablespace string UNDOTBS12. 查找表空间datafile
SQL>select * from dba_data_files where tablespace_name = ‘UNDOTBS1′;
FILE_NAME TABLESPACE_NAME BYTES
——————————————————————————– —————————— ———-
/opt/oracle/oradata/undotbs01.dbf UNDOTBS1 209715200SQL> select usn,xacts,rssize/1024/1024/1024,hwmsize/1024/1024/1024,shrinks from v$rollstat order by rssize;
USN XACTS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
———- ———- ——————— ———————- ———-
0 0 0.00035858154296875 0.00035858154296875 0
2 0 0.00109100341796875 0.00304412841796875 2
4 0 0.00109100341796875 0.00304412841796875 2
10 0 0.00109100341796875 0.00206756591796875 1
5 0 0.00109100341796875 0.00206756591796875 1
7 0 0.00109100341796875 0.00206756591796875 1
1 0 0.00206756591796875 0.00206756591796875 1
3 0 0.00206756591796875 0.00304412841796875 1
8 0 0.00206756591796875 0.00304412841796875 1
9 0 0.00206756591796875 0.00304412841796875 1
6 0 0.00218963623046875 0.00218963623046875 13. 创建新的undo表空间
SQL> create undo tablespace undotbs2 datafile ‘/opt/oracle/oradata/undotbs02.dbf ‘ size 50M autoextend on next 50M maxsize 200M extent management local;4. 切换udon表空间至新表空间
SQL> alter system set undo_tablespace=undotbs2 scope=both;5. 查询切换后的表空间
SQL>show parameter undo_tablespace;
NAME TYPE VALUE
———————————— ———– ——————————
undo_tablespace string UNDOTBS2SQL> select usn,xacts,rssize/1024/1024/1024,hwmsize/1024/1024/1024,shrinks from v$rollstat order by rssize;
SQL> select usn,xacts,rssize/1024/1024/1024,hwmsize/1024/1024/1024,shrinks from v$rollstat order by rssize;USN XACTS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS
———- ———- ——————— ———————- ———-
11 0 0.00011444091796875 0.00011444091796875 0
12 0 0.00011444091796875 0.00011444091796875 0
13 0 0.00011444091796875 0.00011444091796875 0
15 0 0.00011444091796875 0.00011444091796875 0
17 0 0.00011444091796875 0.00011444091796875 0
19 0 0.00011444091796875 0.00011444091796875 0
20 0 0.00011444091796875 0.00011444091796875 0
18 0 0.00011444091796875 0.00011444091796875 0
16 0 0.00011444091796875 0.00011444091796875 0
14 0 0.00011444091796875 0.00011444091796875 0
0 0 0.00035858154296875 0.00035858154296875 06. drop掉原来的表空间
SQL>drop tablespace undotbs1 including contents and datafiles;
可以参考http://www.inthirties.com/?p=681
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