1.查看控制文件：
SQL> select name from v$controlfile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/ORA11GR2/control01.ctl
/u01/app/oracle/fast_recovery_area/ORA11GR2/control02.ctl
2.增加控制文件：
SQL> alter system set control_files=
2 ‘/u01/app/oracle/oradata/ORA11GR2/control01.ctl‘,
3 ‘/u01/app/oracle/fast_recovery_area/ORA11GR2/control02.ctl‘,
4 ‘/u01/app/oracle/oradata/ORA11GR2/control03.ctl‘ scope=spfile;
System altered.
3.操作系统拷贝控制文件
SQL> !cp /u01/app/oracle/oradata/ORA11GR2/control01.ctl /u01/app/oracle/oradata/ORA11GR2/control03.ctl
4.起库
SQL> startup
ORACLE instance started.
Total System Global Area 830930944 bytes
Fixed Size 2257800 bytes
Variable Size 536874104 bytes
Database Buffers 289406976 bytes
Redo Buffers 2392064 bytes
Database mounted.
Database opened.
5.查看控制文件：
SQL> select name from v$controlfile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/ORA11GR2/control01.ctl
/u01/app/oracle/fast_recovery_area/ORA11GR2/control02.ctl
/u01/app/oracle/oradata/ORA11GR2/control03.ctl
原文：http://www.cnblogs.com/tomatoes-/p/6120344.html