Home Database Mysql Tutorial 利用RMAN备份复制数据库

利用RMAN备份复制数据库

Jun 07, 2016 pm 05:07 PM
oracle database

一、在oracle数据open状态下,用rman备份rman备份必须在归档模式下查看是否是归档模式SQLgt; archivelog list;

一、在Oracle数据open状态下,用rman备份

rman备份必须在归档模式下

查看是否是归档模式

SQL> archivelog list;

修改为归档模式

shutdown immediate

startup mount

alter database archivelog;(alter database noarchivelog)

1、在第三台机器上用rman连接源数据库

rman target sys/sysdba@demo1

2、启动自动备份

RMAN> configure controlfile autobackup on;

3、备份

RMAN> backup database plus archivelog delete input format '/u01/rmanbackup/dup_%U';

4、查看备份情况

RMAN> list backup;

5、拷贝spfile和口令文件到dbs下,并建立init+实例名.ora

输入

db_name=实例名

例如:db_name='demo1'

6.把生成的rman备份拷贝到相应的目录

7.启动目标数据库到nomount状态

startup nomount

8.在连接主机上建立dup.txt

输入

run {

    allocate auxiliary channel dup1 type disk;

    duplicate database to demo1 spfile backup location '/u01/rmanbackup' nofilenamecheck

    logfile

      group 1 ('/u01/app/oracle/oradata/redo01_1.rdo','/u01/app/oracle/oradata/redo01_2.rdo') size 52428800,

      group 2 ('/u01/app/oracle/oradata/redo02_1.rdo','/u01/app/oracle/oradata/redo02_2.rdo') size 52428800,

      group 3 ('/u01/app/oracle/oradata/redo03_1.rdo','/u01/app/oracle/oradata/redo03_2.rdo') size 52428800;

}

9.用rman连接数据库

RMAN> connect auxiliary sys/sysdba@demo2

10.执行脚本

RMAN>@dup.txt

11.当执行出错时及某个进程不能启动时,,执行

[oracle@localhost u01]$ ipcs

[oracle@localhost u01]$ ipcrm -s semid

linux

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