oracle 日志文件管理
2016-02-01 09:45
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OS:
[root@b28-122 ~]# more /etc/oracle-release
Oracle Linux Server release 5.7
DB:
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
1.假设现有三个日志组,每个组内有一个成员,每个成员的大小为1MB,现在想把此三个日志组的成员大小都改为20MB。
2.创建新的日志群组
alter database add logfile group4(‘d:\oradb\redo04.log’) size 2048k;
alter database add logfile group5(‘d:\oradb\redo05.log’) size 2048k;
3. 切换当前日志到新的日志组
alter system switch logfile;
alter system switch logfile;
4.日志组的信息:
select group#,archived,status from v$log;
5.若日志处于active,无法删除,使日志处于inactive:
shutdown immediate;
startup mount;
alter database drop logfile group 5;
commit;
6.删除旧的oracle日志文件
alter database drop logfile group 1;
alter database drop logfile group 2;
alter database drop logfile group 3;
7.到操作系统下删除原旧的oracle日志文件组1,2,3中的文件。
8.重建日志组1,2,3
alter database add logfile group 1 ('d:\oradb\redo01_1.log') size 20M;
alter database add logfile group 2 ('d:\oradb\redo02_1.log') size 20M;
alter database add logfile group 3 ('d:\oradb\redo03_1.log') size 20M;
9.切换日志组
alter system switch logfile;
alter system switch logfile;
alter system switch logfile;
10.删除中间过渡的日志组4,5
alter database drop logfile group 4;
alter database drop logfile group 5;
[root@b28-122 ~]# more /etc/oracle-release
Oracle Linux Server release 5.7
DB:
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
1.假设现有三个日志组,每个组内有一个成员,每个成员的大小为1MB,现在想把此三个日志组的成员大小都改为20MB。
2.创建新的日志群组
alter database add logfile group4(‘d:\oradb\redo04.log’) size 2048k;
alter database add logfile group5(‘d:\oradb\redo05.log’) size 2048k;
3. 切换当前日志到新的日志组
alter system switch logfile;
alter system switch logfile;
4.日志组的信息:
select group#,archived,status from v$log;
5.若日志处于active,无法删除,使日志处于inactive:
shutdown immediate;
startup mount;
alter database drop logfile group 5;
commit;
6.删除旧的oracle日志文件
alter database drop logfile group 1;
alter database drop logfile group 2;
alter database drop logfile group 3;
7.到操作系统下删除原旧的oracle日志文件组1,2,3中的文件。
8.重建日志组1,2,3
alter database add logfile group 1 ('d:\oradb\redo01_1.log') size 20M;
alter database add logfile group 2 ('d:\oradb\redo02_1.log') size 20M;
alter database add logfile group 3 ('d:\oradb\redo03_1.log') size 20M;
9.切换日志组
alter system switch logfile;
alter system switch logfile;
alter system switch logfile;
10.删除中间过渡的日志组4,5
alter database drop logfile group 4;
alter database drop logfile group 5;
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