修改Oracle重做日志文件大小

修改Oracle重做日志文件大小1.创建3个新的日志组SQL> ALTER DATABASE ADD LOGFILE GROUP 4 （"/u01/app/oracle/oradata/orcl/redo06.log"） SIZE 500M;SQL> ALTER DATABASE ADD LOGFILE GROUP 5 （"/u01/app/oracle/oradata/orcl/redo05.log"） SIZE 500M;SQL> ALTER DATABASE ADD LOGFILE GROUP 6 （"/u01/app/oracle/oradata/orcl/redo06.log"） SIZE 500M; 查看日志组SQL> select * from v$logfile;2.切换当前日志到新的日志组SQL> alter system switch logfile;SQL> alter system switch logfile;SQL> alter system switch logfile; 切到要删除为INCACTIVE才行 SQL> select group#,sequence#,bytes,members,status from v$log; GROUP# SEQUENCE# BYTES MEMBERS STATUS
---------- ---------- ---------- ---------- ----------------
1 139 52428800 1 INACTIVE
2 137 52428800 1 INACTIVE
3 138 52428800 1 INACTIVE
4 140 524288000 1 ACTIVE
5 141 524288000 1 CURRENT
6 136 524288000 1 INACTIVE3.删除旧的日志组SQL> alter database drop logfile group 1;Database altered.SQL> alter database drop logfile group 2;Database altered.SQL> alter database drop logfile group 3; 查看是否删除了日志组SQL> select group#,sequence#,bytes,members,status from v$log; GROUP# SEQUENCE# BYTES MEMBERS STATUS
---------- ---------- ---------- ---------- ----------------
4 140 524288000 1 INACTIVE
5 141 524288000 1 CURRENT
6 136 524288000 1 INACTIVE4.操作系统删除原日志组1、2、3中的文件 [oracle@oracle122 log]$ cd /u01/app/oracle/oradata/orcl
[oracle@oracle122 orcl]$
[oracle@oracle122 orcl]$ pwd
/u01/app/oracle/oradata/orcl
[oracle@oracle122 orcl]$ ls
control01.ctl example01.dbf redo01.log redo02.log redo03.log redo04.log redo05.log redo06.log sysaux01.dbf system01.dbf temp01.dbf undotbs01.dbf users01.dbf
[oracle@oracle122 orcl]$ rm -rf redo01.log
[oracle@oracle122 orcl]$ rm -rf redo02.log
[oracle@oracle122 orcl]$ rm -rf redo03.log 5.重建日志组1、2、3SQL> ALTER DATABASE ADD LOGFILE GROUP 1 （"/u01/app/oracle/oradata/orcl/redo01.log"） SIZE 500M;SQL> ALTER DATABASE ADD LOGFILE GROUP 2 （"/u01/app/oracle/oradata/orcl/redo02.log"） SIZE 500M;SQL> ALTER DATABASE ADD LOGFILE GROUP 3 （"/u01/app/oracle/oradata/orcl/redo03.log"） SIZE 500M; 7.删除中间过渡用的日志组4、5、6 ，在删除时查询select group#,sequence#,bytes,members,status from v$log; 删除组是否为INACTIVE，如果不是INACTIVE 就要执行alter system switch logfile;查询看一下SQL> select group#,sequence#,bytes,members,status from v$log; GROUP# SEQUENCE# BYTES MEMBERS STATUS
---------- ---------- ---------- ---------- ----------------
1 148 524288000 1 CURRENT
2 143 524288000 1 INACTIVE
3 144 524288000 1 INACTIVE
4 146 524288000 1 INACTIVE
5 147 524288000 1 INACTIVE
6 145 524288000 1 INACTIVE SQL> alter database drop logfile group 4;Database altered.SQL> alter database drop logfile group 5;Database altered.SQL> alter database drop logfile group 6;Database altered.8.到操作系统删除组4、5、6[oracle@oracle122 orcl]$ rm -rf redo04.log
[oracle@oracle122 orcl]$ rm -rf redo05.log
[oracle@oracle122 orcl]$ rm -rf redo06.log 9.备份当前最新的控制文件SQL> alter database backup controlfile to trace resetlogs ;Oracle 增大在线重做日志文件大小 http://www.linuxidc.com/Linux/2013-11/92426.htm在CentOS 6.4下安装Oracle 11gR2（x64） http://www.linuxidc.com/Linux/2014-02/97374.htmOracle 11gR2 在VMWare虚拟机中安装步骤 http://www.linuxidc.com/Linux/2013-09/89579p2.htmDebian 下安装 Oracle 11g XE R2 http://www.linuxidc.com/Linux/2014-03/98881.htm更多Oracle相关信息见Oracle 专题页面 http://www.linuxidc.com/topicnews.aspx？tid=12本文永久更新链接地址