一、环境
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11g rac
二、演示步骤
1. 查看控制文件路径
SYS@ysdb1>show parameter control_files
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_files string +DATA1/ysdb/control01.ctl
2. 关闭所有实例，启动一个实例到nomount状态，恢复一个控制文件
[oracle@ysdb1 dbs]$ rman target /
Recovery Manager: Release 11.2.0.4.0 - Production on Wed Jun 28 11:10:03 2017
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: YSDB (DBID=3762312883)
RMAN> shutdown immediate;
using target database control file instead of recovery catalog
database closed
database dismounted
Oracle instance shut down
RMAN>
RMAN>
RMAN> startup nomount;
connected to target database (not started)
Oracle instance started
Total System Global Area 647204864 bytes
Fixed Size 2256032 bytes
Variable Size 536871776 bytes
Database Buffers 104857600 bytes
Redo Buffers 3219456 bytes
RMAN> restore controlfile to '+data1/ysdb/control03.ctl' from '+data1/ysdb/control01.ctl';
Starting restore at 28-JUN-17
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=34 instance=ysdb1 device type=DISK
channel ORA_DISK_1: copied control file copy
Finished restore at 28-JUN-17
RMAN>
3. 在nomount下，修改参数文件，重启数据库
[oracle@ysdb1 dbs]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Wed Jun 28 11:14:08 2017
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SYS@ysdb1>select status from v$instance;
STATUS
------------
STARTED
SYS@ysdb1>alter system set control_files='+data1/ysdb/control01.ctl','+data1/ysdb/control03.ctl' scope=spfile sid='*';
System altered.
SYS@ysdb1>shutdown immediate;
ORA-01507: database not mounted
ORACLE instance shut down.
SYS@ysdb1>startup
ORACLE instance started.
Total System Global Area 647204864 bytes
Fixed Size 2256032 bytes
Variable Size 536871776 bytes
Database Buffers 104857600 bytes
Redo Buffers 3219456 bytes
Database mounted.
Database opened.
SYS@ysdb1>show parameter control_files
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_files string +DATA1/ysdb/control01.ctl, +DA TA1/ysdb/control03.ctl
SYS@ysdb1>
