Oracle 10g下ocr和votedisk的管理(一)

ocr和votedisk是什么？

votedisk磁盘存储集中地各个节点并用来进行心跳监测

ocr和votedisk的维护是否需要保持脱机状态？

orc的维护在大多数情况下，是需要联机操作的，因为在各个节点具有ocr.loc文件，联机操作可以保证各个节点的ocr.loc文件及时得到更新。但是部分操作，如repaire和重建等操作需要在脱机状态下进行（后面会详细描述）

votedisk磁盘的维护往往需要在脱机状态下进行

ocr维护的命令有哪些？

维护ocr常用的命令有：

ocrcheck

[root@node1 bin]# ./ocrcheck -h
Name:
ocrcheck - Displays health of Oracle Cluster Registry.

Synopsis:
ocrcheck

Description:
prompt> ocrcheck
Displays current usage, location and health of the cluster registry

Notes:
A log file will be created in
$ORACLE_HOME/log//client/ocrcheck_.log. Please ensure
you have file creation privileges in the above directory before
running this tool.

ocrdump（dump出来的内容可以用来查看ocr中的内容，但是不可以用来进行恢复）

[root@node1 bin]# ./ocrdump -h
Name:
ocrdump - Dump contents of Oracle Cluster Registry to a file.

Synopsis:
ocrdump [|-stdout] [-backupfile ] [-keyname ] [-xml] [-noheader]

Description:
Default filename is OCRDUMPFILE. Examples are:

prompt> ocrdump
writes cluster registry contents to OCRDUMPFILE in the current directory

prompt> ocrdump MYFILE
writes cluster registry contents to MYFILE in the current directory

prompt> ocrdump -stdout -keyname SYSTEM
writes the subtree of SYSTEM in the cluster registry to stdout

prompt> ocrdump -stdout -xml
writes cluster registry contents to stdout in xml format

Notes:
The header information will be retrieved based on best effort basis.
A log file will be created in
$ORACLE_HOME/log//client/ocrdump_.log. Make sure
you have file creation privileges in the above directory before
running this tool.

ocrconfig

[root@node1 bin]# ./ocrconfig -h
Name:
ocrconfig - Configuration tool for Oracle Cluster Registry.

Synopsis:
ocrconfig [option]
option:
-export [-s online]
- Export cluster register contents to a file
-import - Import cluster registry contents from a file
-upgrade [ []]
- Upgrade cluster registry from previous version
-downgrade [-version ]
- Downgrade cluster registry to the specified version
-backuploc - Configure periodic backup location
-showbackup - Show backup information
-restore - Restore from physical backup
-replace ocr|ocrmirror [] - Add/replace/remove a OCR device/file
-overwrite - Overwrite OCR configuration on disk
-repair ocr|ocrmirror - Repair local OCR configuration
-help - Print out this help information

Note:
A log file will be created in
$ORACLE_HOME/log//client/ocrconfig_.log. Please ensure
you have file creation privileges in the above directory before
running this tool.

Table D-1 The ocrconfig Command Options

ocr损坏后怎么恢复？

ocr损坏后通常有两种方式进行修正：恢复和重建。恢复的时候，我们可以从之前export导出的文件恢复，也可以从之前有masternode备份的文件进行恢复。

[root@node1 bin]# ./crs_stat -t -v
Name Type R/RA F/FT Target State Host
----------------------------------------------------------------------
httpd_vip application 0/1 0/0 ONLINE ONLINE node2
httpd_web application 0/1 0/4 ONLINE ONLINE node2
ora....SM1.asm application 0/5 0/0 ONLINE ONLINE node1
ora....E1.lsnr application 0/5 0/0 ONLINE ONLINE node1
ora.node1.gsd application 0/5 0/0 ONLINE ONLINE node1
ora.node1.ons application 0/3 0/0 ONLINE ONLINE node1
ora.node1.vip application 0/0 0/0 ONLINE ONLINE node1
ora....SM2.asm ap