RAC的OCR和VOTING DISK备份方法

我们知道在对RAC节点做一些配置均需要做好备份工作，以便于能够恢复到配置前的状态，这也是一个DBA的基本素质要求，如下是比较常用的方法：

备份voting disk磁盘

[root@RAC2 bin]# ./crsctl query css votedisk

0. 0 /dev/raw/raw2

located 1 votedisk(s).

[root@RAC2 bin]# dd if=/dev/raw/raw2 of=/home/oracle/votedisk.bak

208896+0 records in

208896+0 records out

106954752 bytes (107 MB) copied, 68.1215 seconds, 1.6 MB/s

备份OCR磁盘：

[root@RAC2 bin]# export LANG=C

[root@RAC2 bin]# ./crsctl stop crs

Stopping resources. This could take several minutes.

Successfully stopped CRS resources.

Stopping CSSD.

Shutting down CSS daemon.

Shutdown request successfully issued.

[root@RAC2 bin]# ./ocrconfig -export /home/oracle/ocr.exp

[root@RAC2 bin]# ./ocrcheck

Status of Oracle Cluster Registry is as follows :

Version : 2

Total space (kbytes) : 104216

Used space (kbytes) : 3856

Available space (kbytes) : 100360

ID : 1338542740

Device/File Name : /dev/raw/raw1

Device/File integrity check succeeded

Device/File not configured

Cluster registry integrity check succeeded

crsctl用法可以参见如下：

[root@RAC2 bin]# ./crsctl

Usage: crsctl check crs – checks the viability of the CRS stack

crsctl check cssd – checks the viability of CSS

crsctl check crsd – checks the viability of CRS

crsctl check evmd – checks the viability of EVM

crsctl set css <parameter> <value> – sets a parameter override

crsctl get css <parameter> – gets the value of a CSS parameter

crsctl unset css <parameter> – sets CSS parameter to its default

crsctl query css votedisk – lists the voting disks used by CSS

crsctl add css votedisk <path> – adds a new voting disk

crsctl delete css votedisk <path> – removes a voting disk

crsctl enable crs – enables startup for all CRS daemons

crsctl disable crs – disables startup for all CRS daemons

crsctl start crs – starts all CRS daemons.

crsctl stop crs – stops all CRS daemons. Stops CRS resources in case of cluster.

crsctl start resources – starts CRS resources.

crsctl stop resources – stops CRS resources.

crsctl debug statedump evm – dumps state info for evm objects

crsctl debug statedump crs – dumps state info for crs objects

crsctl debug statedump css – dumps state info for css objects

crsctl debug log css [module:level]{,module:level} …

- Turns on debugging for CSS

crsctl debug trace css – dumps CSS in-memory tracing cache

crsctl debug log crs [module:level]{,module:level} …

- Turns on debugging for CRS

crsctl debug trace crs – dumps CRS in-memory tracing cache

crsctl debug log evm [module:level]{,module:level} …

- Turns on debugging for EVM

crsctl debug trace evm – dumps EVM in-memory tracing cache

crsctl debug log res <resname:level> turns on debugging for resources

crsctl query crs softwareversion [<nodename>] – lists the version of CRS software installed

crsctl query crs activeversion – lists the CRS software operating version

crsctl lsmodules css – lists the CSS modules that can be used for debugging

crsctl lsmodules crs – lists the CRS modules that can be used for debugging

crsctl lsmodules evm – lists the EVM modules that can be used for debugging

If necesary any of these commands can be run with additional tracing by

adding a “trace” argument at the very front.

Example: crsctl trace check css

ocrconfig的用法参见如下：

[root@RAC2 bin]# ./ocrconfig

Name:

ocrconfig – Configuration tool for Oracle Cluster Registry.

Synopsis:

ocrconfig [option]

option:

-export <filename> [-s online]

- Export cluster register contents to a file

-import <filename> – Import cluster registry contents from a file

-upgrade [<user> [<group>]]

- Upgrade cluster registry from previous version

-downgrade [-version <version string>]

- Downgrade cluster registry to the specified version

-backuploc <dirname> – Configure periodic backup location

-showbackup – Show backup information

-restore <filename> – Restore from physical backup

-replace ocr|ocrmirror [<filename>] – Add/replace/remove a OCR device/file

-overwrite – Overwrite OCR configuration on disk

-repair ocr|ocrmirror <filename> – Repair local OCR configuration

-help – Print out this help information

Note:

A log file will be created in

$ORACLE_HOME/log/<hostname>/client/ocrconfig_<pid>.log. Please ensure

you have file creation privileges in the above directory before

running this tool.