ORACLE RMAN实现数据迁移

原来的数据库服务器使用rman进行全库的备份，然后再异地的服务器上恢复一模一样的数据库

1.1      原服务器备份数据库

第一步，查看数据库的实例名和DBID

connected to target database: DB3 (DBID=2060124769, not open)

第二步，进行全备份

backup AS COMPRESSED BACKUPSET database

include current controlfile format '/orabak/db_%d_%T_%s'

plus archivelog format '/orabak/arch_%d_%T_%s' ;

第三步，查看数据库文件的位置： /home/Oracle/oradata/db3/

第四步，将备份文件arch_DB3_20140910_8和 db_ DB3_20140910_7复制异机上/home/oracle/orabak

1.2      目标服务器上创建数据库

第一步，创建实例名相同（db3）,数据库文件的位置相同（/home/oracle/oradata/db3/）的数据库。

 第二步，关闭实例，启动到nomount状态。Sql>startup nomount;

 第三步，设置dbid和原数据库dbid相同

rman target/

Recovery Manager: Release 10.2.0.5.0 - Production on Thu Sep 11 19:53:50 2014

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

connected to target database: db3 (not mounted)

RMAN> set dbid 2060124769

executing command: SET DBID

 第四步，恢复控制文件

RMAN> restore controlfile from '/home/oracle/db_DB3_20140910_7';

Starting restore at 11-SEP-14

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=153 devtype=DISK

channel ORA_DISK_1: restoring control file

channel ORA_DISK_1: restore complete, elapsed time: 00:00:05

output filename=/home/oracle/oradata/db3/db3/control01.ctl

output filename=/home/oracle/oradata/db3/db3/control02.ctl

output filename=/home/oracle/oradata/db3/db3/control03.ctl

Finished restore at 11-SEP-14

第五步，mount数据库

RMAN> alter database mount;

database mounted

released channel: ORA_DISK_1

第六步，注册从源数据库拷贝过来的备份集到rman中

RMAN> catalog start with '/home/oracle/orabak';

searching for all files that match the pattern /home/oracle/orabak

List of Files Unknown to the Database

=====================================

File Name: /home/oracle/orabak/arch_DB3_20140910_8

File Name: /home/oracle/orabak/db_DB3_20140910_7

Do you really want to catalog the above files (enter YES or NO)? yes

cataloging files...

cataloging done

第七步，恢复归档日志

RMAN> restore archivelog all;

Starting restore at 11-SEP-14

using channel ORA_DISK_1

archive log thread 1 sequence 6 is already on disk as file /oracle/product/10.2.0.5/dbs/arch1_6_857918757.dbf

channel ORA_DISK_1: starting archive log restore to default destination

channel ORA_DISK_1: restoring archive log

archive log thread=1 sequence=3

channel ORA_DISK_1: reading from backup piece /home/oracle/orabak/arch_DB3_20140910_1

channel ORA_DISK_1: restored backup piece 1

piece handle=/home/oracle/orabak/arch_DB3_20140910_1 tag=TAG20140910T172944

（注：如果不恢复归档日志，

RMAN> recover database;

Starting recover at 11-SEP-14

using channel ORA_DISK_1

starting media recovery

unable to find archive log

archive log thread=1 sequence=7）

第八步，恢复数据库文件（因为目标数据库和原数据库的数据文件位置相同，所以简单些）

RMAN> restore database;

Starting restore at 11-SEP-14

using channel ORA_DISK_1

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00001 to /home/oracle/oradata/db3/system01.dbf

restoring datafile 00002 to /home/oracle/oradata/db3/undotbs01.dbf

restoring datafile 00003 to /home/oracle/oradata/db3/sysaux01.dbf

restoring datafile 00004 to /home/oracle/oradata/db3/users01.dbf

channel ORA_DISK_1: reading from backup piece /home/oracle/orabak/db_DB3_20140910_6

channel ORA_DISK_1: restored backup piece 1

piece handle=/home/oracle/orabak/db_DB3_20140910_6 tag=TAG20140910T173540

第九步，恢复数据库

RMAN> recover database;

Starting recover at 11-SEP-14

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=152 devtype=DISK

starting media recovery

media recovery complete, elapsed time: 00:00:03

Finished recover at 11-SEP-14

第十步，启动数据库

alter database open resetlogs;