Shulou(Shulou.com)06/01 Report--

Oracle Study-OCR disk failure under AIX RAC (PROT-602)

*

* Welcome to AIX Version 5.3! *

* *

* Please see the README file in / usr/lpp/bos for information pertinent to *

* this release of the AIX Operating System. *

*

Failure phenomenon:

[root@aix208 /] # crsctl check crs

Failure 1 contacting CSS daemon

Cannot communicate with CRS

EVM appears healthy

[root@aix208 /] # ocrcheck

PROT-602: Failed to retrieve data from the cluster registry

-OCR disk was mistakenly deleted by users!

Solution:

Restore through the ocrconfig tool:

[root@aix208 /] # ocrconfig

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 an 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.

1) repair via repair

[root@aix208 /] # ocrconfig-repair ocr

[root@aix208 /] # ocrcheck

PROT-601: Failed to initialize ocrcheck

View the ocr device file:

[root@aix208 /] # ls-l / dev | grep ocr

Brw-rw---- 1 oracle dba 123, 1 Feb 24 14:54 rac_ocr

Brw-rw---- 1 root system 123, 20 Feb 25 12:01 rac_ocr2

Crw-r- 1 root dba 123, 1 Feb 25 12:16 rrac_ocr

-rw-r--r-- 1 root system 139264000 Feb 22 13:50 rrac_ocr1

Crw-rw---- 1 oracle dba 123, 20 Feb 25 12:16 rrac_ocr2

[root@aix208 /] # ocrconfig-repair ocr / dev/rrac_ocr

[root@aix208 /] # ocrcheck

PROT-601: Failed to initialize ocrcheck

[root@aix208 /] # ocrconfig-replace ocr / dev/rrac_ocr

PROT-1: Failed to initialize ocrconfig

2) repair through ocr backup:

[root@aix208 /] # ocrconfig-showbackup

View backup data:

[root@aix208 /] # cd / u01/crs_1/cdata/crs

[root@aix208 crs] # ls

Backup00.ocr day.ocr week.ocr

[root@aix208 crs] # ls-l

Total 20256

-rw-r--r-- 1 root system 3457024 Feb 25 11:48 backup00.ocr

-rw-r--r-- 1 root system 3457024 Feb 25 11:48 day.ocr

-rw-r--r-- 1 root system 3457024 Feb 25 11:48 week.ocr

[root@aix208 crs] # ls-lt

Total 20256

-rw-r--r-- 1 root system 3457024 Feb 25 11:48 week.ocr

-rw-r--r-- 1 root system 3457024 Feb 25 11:48 day.ocr

-rw-r--r-- 1 root system 3457024 Feb 25 11:48 backup00.ocr

"from backup, use the restore tool to repair:"

[root@aix208 crs] # ocrconfig-restore / u01/crs_1/cdata/crs/day.ocr

[root@aix208 crs] # ocrcheck

Status of Oracle Cluster Registry is as follows:

Version: 2

Total space (kbytes): 130984

Used space (kbytes): 3252

Available space (kbytes): 127732

ID: 133619783

Device/File Name: / dev/rrac_ocr

Device/File integrity check succeeded

Device/File not configured

Cluster registry integrity check succeeded

[root@aix208 crs] # crsctl check crs

CSS appears healthy

CRS appears healthy

EVM appears healthy

[root@aix208 crs] # crs_stat-t

Name Type Target State Host

Ora....07.lsnr application ONLINE ONLINE aix207

Ora.aix207.gsd application ONLINE ONLINE aix207

Ora.aix207.ons application ONLINE ONLINE aix207

Ora.aix207.vip application ONLINE ONLINE aix207

Ora....08.lsnr application ONLINE ONLINE aix208

Ora.aix208.gsd application ONLINE ONLINE aix208

Ora.aix208.ons application ONLINE ONLINE aix208

Ora.aix208.vip application ONLINE ONLINE aix208

Ora.prod.db application ONLINE ONLINE aix207

Ora....d1.inst application ONLINE ONLINE aix207

Ora....d2.inst application ONLINE OFFLINE aix208

-repair succeeded!

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