RAC和ASM环境下修改控制文件control file

1，目前控制文件只有一个，为了安全性，增加到3个

SQL> select name from v$controlfile;

NAME
--------------------------------------------------------------------------------
+DATA/racdb/controlfile/current.283.914350675

2，执行如下sql

SQL> alter system set control_files = '+DATA/racdb/controlfile/control01.ctl','+DATA/racdb/controlfile/control02.ctl','+DATA/racdb/controlfile/control03.ctl' scope=spfile;

3，停止数据库

$ srvctl stop database -d racdb

4，复制控制文件

ASMCMD> pwd
+data/racdb/CONTROLFILE
ASMCMD> ls       
current.283.914350675
ASMCMD> cp current.283.914350675 control01.ctl
copying +data/racdb/CONTROLFILE/current.283.914350675 -> +data/racdb/CONTROLFILE/control01.ctl
ASMCMD> cp current.283.914350675 control02.ctl
copying +data/racdb/CONTROLFILE/current.283.914350675 -> +data/racdb/CONTROLFILE/control02.ctl
ASMCMD> cp current.283.914350675 control03.ctl
copying +data/racdb/CONTROLFILE/current.283.914350675 -> +data/racdb/CONTROLFILE/control03.ctl
ASMCMD> 

5，重新启动数据库

$ srvctl start database -d racdb

6，验证结果


SQL> select name from v$controlfile;

NAME
--------------------------------------------------------------------------------
+DATA/racdb/controlfile/control01.ctl
+DATA/racdb/controlfile/control02.ctl
+DATA/racdb/controlfile/control03.ctl