Move/Replace/Change Location of OCR & Voting Disk

How To Change the location of OCR & Voting Disk in 10gR2 Oracle RAC

Voting Disk:
1.) Login as root
2.) Shutdown CRS on all nodes:

root@oracle-server:/home/crs/bin[bin]# ./crsctl stop crs
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
root@oracle-server:/home/crs/bin[bin]# ./crsctl check crs
Failure 1 contacting CSS daemon
Cannot communicate with CRS
Cannot communicate with EVM

3.) Check the the location of the voting disk:

root@oracle-server:/home/crs/bin[bin]# ./crsctl query css votedisk
0. 0 /mnt/db_crs/vd1
1. 0 /mnt/db_crs/vd2
2. 0 /mnt/db_crs/vd3

4.) Copy the voting disk to the new location:
root@oracle-server:/home/crs/bin[bin]# cp /mnt/db_crs/vd2 /mnt/db_crs_mirror1/
root@oracle-server:/home/crs/bin[bin]# cp /mnt/db_crs/vd3 /mnt/db_crs_mirror2/

5.) Change the location in CRS:

root@oracle-server:/home/crs/bin[bin]# ./crsctl add css votedisk /mnt/db_crs_mirror1/vd2
Now formatting voting disk: /mnt/db_crs_mirror1/vd2
successful addition of votedisk /mnt/db_crs_mirror1/vd2.
root@oracle-server:/home/crs/bin[bin]# ./crsctl add css votedisk /mnt/db_crs_mirror2/vd3
Now formatting voting disk: /mnt/db_crs_mirror2/vd3
successful addition of votedisk /mnt/db_crs_mirror2/vd3.

6.) Delete the old Voting Disks:

root@oracle-server:/home/crs/bin[bin]# crsctl delete css votedisk /mnt/db_crs/vd2 -force
successful deletion of votedisk /mnt/db_crs/vd2.
root@oracle-server:/home/crs/bin[bin]# crsctl delete css votedisk /mnt/db_crs/vd3 -force
successful deletion of votedisk /mnt/db_crs/vd3.

7.) Query CRS to see if the changes where proper:

root@oracle-server:/home/crs/bin[bin]# ./crsctl query css votedisk
0. 0 /mnt/db_crs/vd1
1. 0 /mnt/db_crs_mirror2/vd3
2. 0 /mnt/db_crs_mirror1/vd2

PS: The permission to the voting disk should be root:dba, while copying and creating voting disk as we are using the root user, the permission will change to root:root, which will give error when starting crs.

OCR:

1.) Login as root.

2.) Start CRS on all nodes:

root@oracle-server:/home/crs/bin[bin]# ./crsctl start crs

Attempting to start CRS stack

The CRS stack will be started shortly

root@oracle-server:/home/crs/bin[bin]# ./crsctl check crs

Failure 1 contacting CSS daemon

Cannot communicate with CRS

Cannot communicate with EVM

root@oracle-server:/home/crs/bin[bin]# ./crsctl check crs

CSS appears healthy

CRS appears healthy

EVM appears healthy

3.) Check OCR configuration/backups:

root@oracle-server:/home/crs/bin[bin]# ocrcheck

Status of Oracle Cluster Registry is as follows :

Version : 2

Total space (kbytes) : 262144

Used space (kbytes) : 2812

Available space (kbytes) : 259332

ID : 429958626

Device/File Name : /mnt/db_crs/crs

Device/File integrity check succeeded

Device/File Name : /mnt/db_crs/crs_mirror

Device/File integrity check succeeded

Cluster registry integrity check succeeded

root@oracle-server:/home/crs/bin[bin]# ocrconfig -showbackup

oracle-server 2008/04/10 23:47:02 /oracle/product/10.2.0/crs/cdata/ac4-db-crs

oracle-server 2008/04/10 19:47:03 /oracle/product/10.2.0/crs/cdata/ac4-db-crs

oracle-server 2008/04/10 15:47:04 /oracle/product/10.2.0/crs/cdata/ac4-db-crs

oracle-server 2008/04/08 19:47:17 /oracle/product/10.2.0/crs/cdata/ac4-db-crs

oracle-server 2008/04/03 15:47:53 /oracle/product/10.2.0/crs/cdata/ac4-db-crs

4.) Copy the OCR mirror to the new location:

root@oracle-server:/mnt/prdaudit_crs[root@oracle-server db_crs]# ls -rlt

mtotal 38916

-rw-r--r-- 1 oracle dba 10240000 Apr 11 02:27 vd2.old

-rw-r--r-- 1 oracle dba 10240000 Apr 11 02:27 vd3.old

-rw-r----- 1 root dba 3121152 Apr 11 02:59 crs_mirror

-rw-r----- 1 root dba 3121152 Apr 11 03:22 crs

-rw-r--r-- 1 oracle dba 10240000 Apr 11 03:23 vd1

root@oracle-server:/mnt/db_crs[root@oracle-server db_crs]# cp crs_mirror /mnt/db_crs_mirror1

Check the permission, it should be root:dba

5.) Change the OCR location in the CRS:

root@oracle-server:/home/crs/bin[bin]# ./ocrconfig -replace ocrmirror /mnt/db_crs_mirror1/crs_mirror

Same way to can move the ocr:

oraconfig -replace ocr

root@oracle-server:/home/crs/bin[bin]# ocrcheck

Status of Oracle Cluster Registry is as follows :

Version : 2

Total space (kbytes) : 262144

Used space (kbytes) : 2812

Available space (kbytes) : 259332

ID : 429958626

Device/File Name : /mnt/db_crs/crs

Device/File integrity check succeeded

Device/File Name : /mnt/db_crs_mirror1/crs_mirror

Device/File integrity check succeeded

Cluster registry integrity check succeeded

root@oracle-server:/home/crs/bin[bin]# exit

OCR AND VOTING DISK MOVED!!!!