Rman实现数据库迁移
(从库A迁移到库B)
环境:
服务器A:Oracle10g+AS3
服务器B:Oracle10g+AS4
准备工作:
1 在数据库B上建立与库A相同的目录结构(若由于磁盘空间等原因可以用软链接做到),其中包括:
$ORACLE_BASE;$ORACLE_HOME;以及archivelog目录和BASE下的admin目录及其子目录
2 在数据库B上安装数据库软件(不建库)
实施工作:
1 备份:在数据库A上
断开连接到A上的应用,并做全备份
[oracle@rman oradata]$ $ORACLE_HOME/bin/rman
Recovery Manager: Release 10.2.0.1.0 - Production on Tue Jun 19 13:48:55 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
RMAN>connect catalog rman/rman
RMAN>connect target /
connected to target database: RMAN (DBID=1509600741)
RMAN>run {
2>configure controlfile autobackup on;
3>configure controlfile autobackup format for device type disk to ‘/home/share/rman/%F‘;
4>allocate channel d1 type disk;
5>allocate channel d2 type disk;
6>backup incremental level=0 database format ‘/home/share/rman/d_%T_%s.bak‘;
7>release channel d1;
8>release channel d2;
9>}
传输备份集:
[oracle@rman rman]$ scp *
oracle@192.168.1.162:/home/share/store oracle@192.168.1.162‘s password:
c-1509600741-20070619-01 100% 6976KB 1.4MB/s 00:05
full_08ikm3h2_1_1 100% 23MB 1.3MB/s 00:18
full_09ikm3h8_1_1 100% 6816KB 1.3MB/s 00:05
full_0aikm3h8_1_1 35% 198MB 1.1MB/s 05:17 ETA
[oracle@rman pfile]$ scp *
oracle@192.168.1.162:/u01/app/oracle/admin/rman/pfile oracle@192.168.1.162‘s password:
init.ora 100% 2471 2.4KB/s 00:00
2 恢复:在数据库B上
首先:启动实例
[oracle@etc pfile]$ echo $ORACLE_SID
rman
[oracle@etc pfile]$ sqlplus "/ as sysdba"
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Jun 19 16:39:32 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup pfile=‘/u01/app/oracle/admin/rman/pfile/init.ora.4212007155133‘ nomount
ORACLE instance started.
Total System Global Area 285212672 bytes
Fixed Size 1218992 bytes
Variable Size 92276304 bytes
Database Buffers 188743680 bytes
Redo Buffers 2973696 bytes
SQL> exit
其次进入Rman恢复controlfile,spfile和database;
[oracle@etc ~]$ $ORACLE_HOME/bin/rman
Recovery Manager: Release 10.2.0.1.0 - Production on Wed Jun 20 14:04:25 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
RMAN> connect target /
connected to target database: rman (not mounted)
RMAN> set dbid=1509600741
executing command: SET DBID
RMAN> restore controlfile from ‘/home/share/rman/c-1509600741-20070619-02‘
Starting restore at 20-JUN-07
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 devtype=DISK
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:05
output filename=/u01/app/oracle/oradata/rman/control01.ctl
output filename=/u01/app/oracle/oradata/rman/control02.ctl
output filename=/u01/app/oracle/oradata/rman/control03.ctl
Finished restore at 20-JUN-07
RMAN> restore spfile from ‘/home/share/rman/c-1509600741-20070619-02‘;
Starting restore at 20-JUN-07
using channel ORA_DISK_1
channel ORA_DISK_1: autobackup found: /home/share/rman/c-1509600741-20070619-02
channel ORA_DISK_1: SPFILE restore from autobackup complete
Finished restore at 20-JUN-07
RMAN> restore database;
Starting restore at 20-JUN-07
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 06/20/2007 14:08:15
ORA-01507: database not mounted
RMAN> alter database mount;
database mounted
released channel: ORA_DISK_1
RMAN> restore database;
Starting restore at 20-JUN-07
Starting implicit crosscheck backup at 20-JUN-07
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=154 devtype=DISK
Crosschecked 10 objects
Finished implicit crosscheck backup at 20-JUN-07
Starting implicit crosscheck copy at 20-JUN-07
using channel ORA_DISK_1
Finished implicit crosscheck copy at 20-JUN-07
searching for all files in the recovery area
cataloging files...
no files cataloged
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 /u01/app/oracle/oradata/rman/system01.dbf
restoring datafile 00002 to /u01/app/oracle/oradata/rman/undotbs01.dbf
restoring datafile 00003 to /u01/app/oracle/oradata/rman/sysaux01.dbf
channel ORA_DISK_1: reading from backup piece /home/share/rman/d_20070619_14.bak
channel ORA_DISK_1: restored backup piece 1
piece handle=/home/share/rman/d_20070619_14.bak tag=TAG20070619T212606
channel ORA_DISK_1: restore complete, elapsed time: 00:01:36
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00004 to /u01/app/oracle/oradata/rman/users01.dbf
restoring datafile 00005 to /u01/app/oracle/oradata/rman/rman01.dbf
channel ORA_DISK_1: reading from backup piece /home/share/rman/d_20070619_13.bak
channel ORA_DISK_1: restored backup piece 1
piece handle=/home/share/rman/d_20070619_13.bak tag=TAG20070619T212606
channel ORA_DISK_1: restore complete, elapsed time: 00:01:16
Finished restore at 20-JUN-07
RMAN> recover database;
Starting recover at 20-JUN-07
using channel ORA_DISK_1
starting media recovery
unable to find archive log
archive log thread=1 sequence=27
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 06/20/2007 14:18:07
RMAN-06054: media recovery requesting unknown log: thread 1 seq 27 lowscn 1101806
RMAN> alter database open resetlogs;
database opened
RMAN> exit
Recovery Manager complete.
[oracle@etc ~]$
由于联机日志没有传送过来，一般需要用resetlogs打开数据库
