基于catalog 的RMAN 备份与恢复


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-- 基于catalog 的RMAN 备份与恢复

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RMAN的备份与恢复存储仓库的数据通常存放于控制文件或恢复目录中，本文主要讲述基于catalog的备份与恢复。

关于catalog的创建请参考：RMAN catalog的创建和使用

 

catalog方式的RMAN备份与恢复只不过是将备份恢复信息数据放在catalog目录内，普通的rman方式则是存放在控制文件中

catalog方式可以存储常用或特定的备份与恢复的脚本

有关catalog方式RMAN存储脚本请参考：基于 catalog 创建RMAN存储脚本

 

一、基于catalog来备份数据库(目标数据库orcl，恢复目录数据库asmdb)

首先基于catalog创建备份脚本

--连接到RMAN

[Oracle@oradb ~]$ rman target sys/RedHat@orcl catalog rman/rman@asmdb

connected to target database: ORCL (DBID=1263182651)

connected to recovery catalog database

 

--创建全局删除废弃备份的脚本

RMAN> create global script global_del_obsocomment 'A script for obsolete backup and delete it' {

2> allocate channel ch1 device type disk;

3> delete obsolete recovery window of 7 days;

4> release channel ch1;

5> }

 

new incarnation of database registered in recovery catalog

starting full resync of recovery catalog

full resync complete

created global script global_del_obso

 

--创建全局归档日志的备份脚本

RMAN> create global script global_arch

2> comment ' A script for archivelog and delete it '

3> {

4>allocate channel ch1 device type disk;

5>sql " alter system archive log current";

6>set limit channel ch1 readrate=10240;

7>set limit channel ch1 kbytes=2048000;

8>backup as compressed backupset archivelog all delete input

9>format='/u01/bk/rmbk/arch_%d_%U'

10>tag='Archbk';

11>release channel ch1;

12> }

 

created global script global_arch

 

--创建全局0级增量备份脚本

RMAN> create global script global_inc0

2> comment ' A script for backup database using incremental level 0'

3> {

4>execute global script global_del_obso;

5>allocate channel ch1 device type disk;

6>set limit channel ch1 readrate=10240;

7>set limit channel ch1 kbytes=2048000;

8>backup as compressed backupset incremental level 0 database

9>format='/u01/bk/rmbk/inc0_%d_%U'

10>tag='Inc0';

11>release channel ch1;

12>execute global script global_arch;

13> }

 

created global script global_inc0

 

--列出已经创建的全局脚本

RMAN> list global script names;

 

List of Stored Scripts in Recovery Catalog

 

Global Scripts

 

Script Name

Description

-----------------------------------------------------------------------

global_arch

A script for archivelog and delete it

 

global_del_obso

A script for obsolete backup and delete it

 

global_inc0

A script for backup database using incremental level 0

 

--启用控制文件的自动备份功能

RMAN> configure controlfile autobackup on;

RMAN> configure controlfile autobackup format for device type disk to '/u01/bk/rmbk/auto_ctl_%d_%f';

 

--删除以前的备份

RMAN> delete noprompt backupset;

 

--备份前验证归档日志是否存在

RMAN> crosscheck archivelog all;

 

--删除无效的归档日志信息

RMAN> delete noprompt expired archivelog all;

 

--使用0级增量备份数据库

RMAN> run { execute global script global_inc0;}

 

--查看刚刚完成的备份情况

RMAN> list backupset summary;

RMAN> list backupset ;

RMAN> list backup of controlfile ;

RMAN> list backup of archivelog all;

RMAN> list backup of database;

RMAN> list backup of datafile n ;

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