1，目前控制文件只有一个，为了安全性，计划增加到3个
sql> select name from v$controlfile;
name
--------------------------------------------------------------------------------
+data/tyolap/controlfile/current.256.772291325
2，执行如下sql
alter system set control_files = '+data/tyolap/controlfile/control01.ctl','+data/tyolap/controlfile/control02.ctl','+data/tyolap/controlfile/control03.ctl' scope=spfile;
3，停止数据库
[grid@dtydb3 ~]$ srvctl stop database -d tyolap
4，复制控制文件
asmcmd> pwd
+data/tyolap/controlfile
asmcmd> ls
current.256.772291325
test.ctl
asmcmd> cp current.256.772291325 control01.ctl
copying +data/tyolap/controlfile/current.256.772291325 -> +data/tyolap/controlfile/control01.ctl
asmcmd> cp current.256.772291325 control02.ctl
copying +data/tyolap/controlfile/current.256.772291325 -> +data/tyolap/controlfile/control02.ctl
asmcmd> cp current.256.772291325 control03.ctl
copying +data/tyolap/controlfile/current.256.772291325 -> +data/tyolap/controlfile/control03.ctl
asmcmd>
5，，重新启动数据库
[grid@dtydb3 ~]$ srvctl start database -d tyolap
6，验证结果
sql> select name from v$controlfile;
name
--------------------------------------------------------------------------------
+data/tyolap/controlfile/control01.ctl
+data/tyolap/controlfile/control02.ctl
+data/tyolap/controlfile/control03.ctl