首页 / MYSQL / RMAN异机恢复备份集权限问题
RMAN异机恢复备份集权限问题
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了RMAN异机恢复备份集权限问题,小编现在分享给大家,供广大互联网技能从业者学习和参考。文章包含3917字,纯文字阅读大概需要6分钟。
内容图文
![RMAN异机恢复备份集权限问题](/upload/InfoBanner/zyjiaocheng/547/a3cd19edbda14adba96d187eb2fae114.jpg)
RMAN异机恢复mdash;mdash;备份集权限问题
今天早上收邮件,看到师父发的rman恢复失败的邮件。
内容如下:
数据都已经解压完毕。 在/orabak/Oracle_bak 下
但恢复时读取备份片总是报错
channel dev1: reading from backup piece/orabak/oracle_bak/fullrac_EPTDB_820_1_20130802
ORA-19870: error reading backup piece/orabak/oracle_bak/fullrac_EPTDB_821_1_20130802
ORA-19587: error occurred reading 0 bytesat block number 1
ORA-27091: unable to queue I/O
ORA-27067: size of I/O buffer is invalid
Additional information: 2
ORA-19870: error reading backup piece/orabak/oracle_bak/fullrac_EPTDB_820_1_20130802
ORA-19587: error occurred reading 0 bytesat block number 1
ORA-27091: unable to queue I/O
ORA-27067: size of I/O buffer is invalid
Additional information: 2
系统日志中也可以看到
Fri Aug 9 00:30:04 2013
Corrupt block 1 found during reading backuppiece, file=/orabak/oracle_bak/fullrac_EPTDB_820_1_20130802, corr_type=1
Fri Aug 9 00:30:41 2013
Corrupt block 1 found during reading backuppiece, file=/orabak/oracle_bak/fullrac_EPTDB_819_1_20130802, corr_type=1
Fri Aug 9 00:30:41 2013
确认传输过程中没有问题。
似乎在这台机器上,RMAN没有办法正确读取备份片。。。
晕了。
我第一反应是备份集的问题,于是去备份目录下看了下。
-r--r--r-- 1 oracle oinstall 20611072 Aug 08 16:41 ctl_EPTDB_824_1_20130802
-r--r--r-- 1 oracle oinstall 21474836480 Aug 08 16:42 fullrac_EPTDB_818_1_20130802
-r--r--r-- 1 oracle oinstall 21474836480 Aug 08 16:45 fullrac_EPTDB_818_2_20130802
--都是只读权限,我觉得有问题,可想了下,rman备份是读取备份集,不用写应该不造成什么影响吧,但想是这么想,总觉得怪怪的。
于是查了下MOS,,果然是权限的问题:
APPLIES TO:
Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.4 [Release 10.2]
Oracle Database - Enterprise Edition - Version 10.1.0.2 to 10.2.0.1 [Release 10.1 to 10.2]
Information in this document applies to any platform.
***Checked for relevance on 06-May-2013***
RMAN restore of read only backuppieces fails as follows:
.
ORA-19870: error reading backup piece
/bugmnt/am/ceaixcb5/tar5619852.992/app/oracle/oradata/TARCS/bkup_03hp58dk_1_1
ORA-19587: error occurred reading 0 bytes at block number 1
ORA-27091: unable to queue I/O
ORA-27067: size of I/O buffer is invalid
Additional information: 2
failover to previous backup
.
RMAN-571: ===========================================================
RMAN-569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-571: ===========================================================
RMAN-3002: failure of restore command at 07/26/2006 13:13:17
RMAN-6026: some targets not found - aborting restore
RMAN-6023: no backup or copy of datafile 4 found to restore
The backuppiece is in read only status at the operating system level.
SOLUTIONMake the RMAN backuppiece not only readable but also writable. See Bug 5412531 for other details.
--确实需要写的权限!
REFERENCESBUG:5412531 - RMAN FAILS RESTORING READONLY BACKUPS: ORA-19870 ORA-19587 ORA-27091 ORA-27067
解决:赋予写的权限即可。
经过修改权限后,进行验证就不会报错了。
cd/orabak/oracle_bak
chmod775 *20130802
RMAN>restore controlfile validate;
Startingrestore at 09-AUG-13
usingchannel ORA_DISK_1
channelORA_DISK_1: starting validation of datafile backupset
channelORA_DISK_1: reading from backup piece/orabak/oracle_bak/ctl_EPTDB_824_1_20130802
channelORA_DISK_1: restored backup piece 1
piecehandle=/orabak/oracle_bak/ctl_EPTDB_824_1_20130802 tag=TAG20130802T210600
channelORA_DISK_1: validation complete, elapsed time: 00:00:02
Finishedrestore at 09-AUG-13
之后的恢复也没有问题。
注意:中间恢复失败,或者手工停止后,要将rman相关进程杀干净再重新恢复,否则后面会有问题。说不定在第二次恢复过程中,第一次的进程才停止,然后把相关文件删除,其实删除的是第二次才恢复的文件(因为文件名相同)。
推荐阅读:
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
内容总结
以上是互联网集市为您收集整理的RMAN异机恢复备份集权限问题全部内容,希望文章能够帮你解决RMAN异机恢复备份集权限问题所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错,欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 gblab@vip.qq.com 举报,一经查实,本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。