Home Database Mysql Tutorial Linux平台下使用RMAN进行Oracle数据库迁移

Linux平台下使用RMAN进行Oracle数据库迁移

Jun 07, 2016 pm 05:32 PM

将oracle数据库从一台机器迁移到另外的一台机器(同为linux平台),设置为不同的路径,不同的实例名

实验目的:将Oracle数据库从一台机器迁移到另外的一台机器(同为linux平台),,设置为不同的路径,不同的实例名
源端:
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1
ORACLE_SID=test
数据文件位置:/oradata/test
目标端:
ORACLE_BASE=/u02/app/oracle
ORACLE_HOME=/u02/app/oracle/product/10.2.0/db_1
ORALCE_SID=test2
数据文件位置:/oradata2/test2
注:两台主机非一台,但是主机名一致均为model.rhel5

第一步:在源端取得备份数据
查询一下MAI用户下的数据,做最后校验使用
MAI@test > select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
TEST TABLE
TEST01 TABLE
开始备份:
$ oracle@model /mnt/hgfs/software/backup> rman target /
RMAN> run{
2> allocate channel c1 device type disk format '/mnt/hgfs/software/backup/%T_%U';
3> backup database;
4> backup current controlfile format '/mnt/hgfs/software/backup/%T_CTL_%U';
5> backup spfile format '/mnt/hgfs/software/backup/%T_SPFILE_%U';
6> release channel c1;
7> }
备份集信息:
$ oracle@model /mnt/hgfs/software/backup> ls -lh
total 304M
-rwxrwxrwx 1 root root 594M Aug 29 20:31 20120829_02njsrtb_1_1*
-rwxrwxrwx 1 root root 6.9M Aug 29 20:31 20120829_03njss0b_1_1*
-rwxrwxrwx 1 root root 6.8M Aug 29 20:31 20120829_CTL_04njss0k_1_1*
-rwxrwxrwx 1 root root 96K Aug 29 20:31 20120829_SPFILE_05njss0m_1_1*

第二步:备端的准备
1、安装数据库软件,基位置参考上文说明。
2、创建相关的目录:
$ oracle@model ~> env | grep ORACLE
ORACLE_BASE=/u02/app/oracle
ORACLE_HOME=/u02/app/oracle/product/10.2.0/db_1
$ oracle@model ~> cd $ORACLE_BASE
$ oracle@model /u02/app/oracle> mkdir flash_recovery_area
$ oracle@model /u02/app/oracle> mkdir -p admin/test2
$ oracle@model /u02/app/oracle> cd admin/test2
$ oracle@model /u02/app/oracle/admin/test2> mkdir {a,b,c,d,u}dump

第三步:开始恢复,此时恢复的实例名为test
$ oracle@model ~> export ORACLE_SID=test
$ oracle@model ~> rman target /
RMAN> startup nomount
1、恢复spfile:
RMAN> restore spfile from '/mnt/hgfs/software/backup/20120829_SPFILE_05njss0m_1_1';
RMAN> shutdown immediate;
2、编辑参数文件,使参数中的相关路径变更为新路径
$ oracle@model ~> sqlplus / as sysdba
SYS@test > create pfile from spfile;
编辑生成的$ORACLE_HOME/dbs/inittest.ora文件,将文件中的路径改为新的路径,即:
/oradata/test/修改为/oradata2/test2/
/u01/app/oracle/修改为/u02/app/oracle
/u01/app/oracle/admin/test修改为/u02/app/oracle/admin/test2
$ oracle@model ~> sqlplus / as sysdba
SYS@test > create spfile from pfile;
3、恢复控制文件:
$ oracle@model ~> rman target /
RMAN> startup nomount
RMAN> restore controlfile from '/mnt/hgfs/software/backup/20120829_CTL_04njss0k_1_1';
4、恢复数据文件:
RMAN> alter database mount;
RMAN> run {
2> set newname for datafile 1 to '/oradata2/test2/system01.dbf';
3> set newname for datafile 2 to '/oradata2/test2/undotbs01.dbf';
4> set newname for datafile 3 to '/oradata2/test2/sysaux01.dbf';
5> set newname for datafile 4 to '/oradata2/test2/users01.dbf';
6> set newname for datafile 5 to '/oradata2/test2/example01.dbf';
7> restore database;
8> }
5、重建控制文件,更新控制文件中的数据文件路径
$ oracle@model ~> sqlplus / as sysdba
SYS@test > alter database backup controlfile to trace;
到$ORACLE_BASE/admin/udump中找到刚才生成的TRACE文件,复制出其中的创建文件集的片段,修改其中的路径信息为新的路径信息,备用
SYS@test > shutdown immediate;
SYS@test > startup nomount
利用刚才修改过的控制文件创建脚本重建控制文件:
SYS@test > CREATE CONTROLFILE REUSE DATABASE "TEST" RESETLOGS ARCHIVELOG
2 MAXLOGFILES 16
3 MAXLOGMEMBERS 3
4 MAXDATAFILES 100
5 MAXINSTANCES 8
6 MAXLOGHISTORY 292
7 LOGFILE
8 GROUP 1 '/oradata2/test2/redo01.log' SIZE 50M,
9 GROUP 2 '/oradata2/test2/redo02.log' SIZE 50M,
10 GROUP 3 '/oradata2/test2/redo03.log' SIZE 50M
11 -- STANDBY LOGFILE
12 DATAFILE
13 '/oradata2/test2/system01.dbf',
14 '/oradata2/test2/undotbs01.dbf',
15 '/oradata2/test2/sysaux01.dbf',
16 '/oradata2/test2/users01.dbf',
17 '/oradata2/test2/example01.dbf'
18 CHARACTER SET ZHS16GBK
19 ;
SYS@test > alter database open resetlogs;
至此,数据库已经能够正常启动了,但是此时的实例名以及数据库名均为test,需要将其更改为test2,继续向下走

更多详情见请继续阅读下一页的精彩内容

Oracle基础教程之通过RMAN复制数据库

RMAN备份策略制定参考内容

RMAN备份学习笔记

Oracle数据库备份加密 RMAN加密

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