一、备份原库
run{
backup database format '/home/oracle/backup/db_%U_%T.bak';
backup current controlfile format '/home/oracle/backup/ctl_%U_%T.bak';
backup spfile format '/home/oracle/backup/spfile_%U_%T.bak';
backup archivelog from time 'sysdate -1' format '/home/oracle/backup/arch_%U_%T.bak';
}
二、修改单实例的参数文件
将备份的文件拷贝到单实例的相同目录
db_name=suq log_archive_dest_1='location=/arch' pga_aggregate_target=400000000 sga_target=800000000 control_files='/oradata/control.ctl'
启动单实例到nomount
[oracle@11g1 dbs]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Fri Dec 12 20:39:56 2014 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to an idle instance. SQL> SQL> startup nomount ORACLE instance started. Total System Global Area 797523968 bytes Fixed Size 2257472 bytes Variable Size 222301632 bytes Database Buffers 566231040 bytes Redo Buffers 6733824 bytes
三、恢复控制文件
[oracle@11g1 ~]$ rman target / Recovery Manager: Release 11.2.0.4.0 - Production on Fri Dec 12 20:40:14 2014 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. connected to target database: SUQ (not mounted) RMAN> restore controlfile from '/home/oracle/backup/clt_0dpq0ka5_1_1_20141212.bak'; Starting restore at 12-DEC-14 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=171 device type=DISK channel ORA_DISK_1: restoring control file channel ORA_DISK_1: restore complete, elapsed time: 00:00:01 output file name=/oradata/control.ctl Finished restore at 12-DEC-14 RMAN> SQL> startup mount ORACLE instance started. Total System Global Area 797523968 bytes Fixed Size 2257472 bytes Variable Size 222301632 bytes Database Buffers 566231040 bytes Redo Buffers 6733824 bytes ORA-00201: control file version 11.2.0.4.0 incompatible with ORACLE version 11.2.0.0.0 ORA-00202: control file: '/oradata/control.ctl'
这里一个报错，需要在pfile中添加版本的参数
compatible='11.2.0.4.0'
SQL> startup mount ORACLE instance started. Total System Global Area 797523968 bytes Fixed Size 2257472 bytes Variable Size 222301632 bytes Database Buffers 566231040 bytes Redo Buffers 6733824 bytes Database mounted. SQL> exit
四、修改日志文件的路径
alter database rename file '+BACKUP/suq/onlinelog/group_1.258.850940549' to '/oradata/group_1.258.850940549'; alter database rename file '+BACKUP/suq/onlinelog/group_1.259.850940549' to '/oradata/group_1.259.850940549'; alter database rename file '+BACKUP/suq/onlinelog/group_2.260.850940551' to '/oradata/group_2.260.850940551'; alter database rename file '+BACKUP/suq/onlinelog/group_2.261.850940551' to '/oradata/group_2.261.850940551'; alter database rename file '+BACKUP/suq/onlinelog/group_3.268.850941051' to '/oradata/group_3.268.850941051'; alter database rename file '+BACKUP/suq/onlinelog/group_3.269.850941053' to '/oradata/group_3.269.850941053'; alter database rename file '+BACKUP/suq/onlinelog/group_4.270.850941053' to '/oradata/group_4.270.850941053'; Database altered. SQL> Database altered. SQL> Database altered. SQL> Database altered. SQL> Database altered. SQL> Database altered. SQL> Database altered. SQL> alter database rename file '+BACKUP/suq/onlinelog/group_4.271.850941053' to '