eygle.com   eygle.com
eygle.com eygle
eygle.com  
 

« 《Oracle DBA手记》- 第二章PDF版本下载 | Blog首页 | ORA-07445 cold_qerfxArrayMaxSize 的Bug »

使用RMAN验证备份的有效性

RMAN提供VALIDATE的命令,可以用于校验备份集的有效性,常用命令如下:
restore validate controlfile;
restore validate database;
验证命令会建议备份的存在性、完好性和可恢复性,帮助我们确认备份的有效与否。

比如验证控制文件和参数文件:
RMAN> restore validate controlfile;

Starting restore at 25-JAN-10
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=388 devtype=DISK

channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /opt/oracle/product/db10g/dbs/c-1341966532-20100125-01
channel ORA_DISK_1: restored backup piece 1
piece handle=/opt/oracle/product/db10g/dbs/c-1341966532-20100125-01 tag=TAG20100125T094817
channel ORA_DISK_1: validation complete, elapsed time: 00:00:02
Finished restore at 25-JAN-10

RMAN> restore validate spfile;

Starting restore at 25-JAN-10
using channel ORA_DISK_1

channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /opt/oracle/product/db10g/dbs/c-1341966532-20100116-00
channel ORA_DISK_1: restored backup piece 1
piece handle=/opt/oracle/product/db10g/dbs/c-1341966532-20100116-00 tag=TAG20100116T033113
channel ORA_DISK_1: validation complete, elapsed time: 00:00:02
Finished restore at 25-JAN-10
验证全备份一般会很慢,谨慎试验:
RMAN> restore validate database;

Starting restore at 25-JAN-10
using channel ORA_DISK_1

data file 22 will be created automatically during restore operation
channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /data3/ordrbak/orderfullback_order_20100124_4691
channel ORA_DISK_1: restored backup piece 1
piece handle=/data3/ordrbak/orderfullback_order_20100124_4691 tag=order
channel ORA_DISK_1: validation complete, elapsed time: 00:02:36
channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /data3/ordrbak/orderfullback_order_20100124_4692
channel ORA_DISK_1: restored backup piece 1
piece handle=/data3/ordrbak/orderfullback_order_20100124_4692 tag=order
channel ORA_DISK_1: validation complete, elapsed time: 00:01:45
channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /data3/ordrbak/orderfullback_order_20100124_4693
channel ORA_DISK_1: restored backup piece 1
piece handle=/data3/ordrbak/orderfullback_order_20100124_4693 tag=order
channel ORA_DISK_1: validation complete, elapsed time: 00:00:26
channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /data3/ordrbak/orderfullback_order_20100124_4694
channel ORA_DISK_1: restored backup piece 1
piece handle=/data3/ordrbak/orderfullback_order_20100124_4694 tag=order
channel ORA_DISK_1: validation complete, elapsed time: 00:00:56
channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /data3/ordrbak/orderfullback_order_20100124_4695
channel ORA_DISK_1: restored backup piece 1
piece handle=/data3/ordrbak/orderfullback_order_20100124_4695 tag=order
channel ORA_DISK_1: validation complete, elapsed time: 00:00:07
channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /data3/ordrbak/orderfullback_order_20100124_4696
channel ORA_DISK_1: restored backup piece 1
piece handle=/data3/ordrbak/orderfullback_order_20100124_4696 tag=order
channel ORA_DISK_1: validation complete, elapsed time: 00:00:04
channel ORA_DISK_1: starting validation of datafile backupset
channel ORA_DISK_1: reading from backup piece /data3/ordrbak/orderfullback_order_20100124_4697
channel ORA_DISK_1: restored backup piece 1
piece handle=/data3/ordrbak/orderfullback_order_20100124_4697 tag=order
channel ORA_DISK_1: validation complete, elapsed time: 00:00:07
failover to previous backup

data file 22 will be created automatically during restore operation
Finished restore at 25-JAN-10
验证命令并不会真正执行恢复,所以可以减去异机测试等的麻烦。

-The End-





历史上的今天...
    >> 2007-01-26文章:
           Metalink的替代访问站点
    >> 2006-01-26文章:
           Oracle7.3.4数据库已经启动
    >> 2005-01-26文章:
           HP-Unix中的时区设置

无觅

By eygle on 2010-01-26 08:01 | Comments (5) | Backup&Recovery | 2497 |

5 Comments

老大你的这篇文章纯属凑数吧,呵呵。

高深的东西平常一般用不上。这样的命令别看他简单,平常能用上就是好东西。

执行restore validate spfile;
还有restore validate controlfile;报错:
RMAN-06564: must use the TO clause when the instance is started with SPFILE
能说说为啥啊???

不错,好东东,学习了!!!


CopyRight © 2004~2020 云和恩墨,成就未来!, All rights reserved.
数据恢复·紧急救援·性能优化 云和恩墨 24x7 热线电话:400-600-8755 业务咨询:010-59007017-7040 or 7037 业务合作: marketing@enmotech.com