Migrate OCR and Vote disk on ASM storage

Storing the OCR and vote disk inside ASM eliminates the need for third party cluster and volume managers and also helps eliminate the complexity of managing separate disk partitions for the OCR in oracle clusterware installations

Steps to migrate OCR and Vote disk on ASM storage:

1. Create ASM diskgroup using ASMCA


2. Voting disk on raw before migration

(root@mysystem) /oracle/product/grid/bin/crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 63b1d7539d25ef7affff433cbdc40f28 (/dev/vx/rdsk/ocrvotedg/votevol) []
Located 1 voting disk(s).


3. Relpacing votedisk from raw to ASM
(root@mysystem) /oracle/product/grid/bin/crsctl replace votedisk +ocrdg

4. Vote disk on ASM after migration
===================================
(root@mysystem) /oracle/product/grid/bin/crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 96c7f0f903174fd1bf15432ad5c6dee6 (/dev/vx/rdsk/asmdg/crsvol1) [OCRDG]
2. ONLINE 14e557f987874f36bf1f116c8a51ba6c (/dev/vx/rdsk/asmdg/crsvol2) [OCRDG]
3. ONLINE 0b1961148b674f00bf64b21ea4e6a126 (/dev/vx/rdsk/asmdg/crsvol3) [OCRDG]
Located 3 voting disk(s).


5. View existing OCR configuration before Migration
(root@mysystem)[/] /oracle/11.2.0/gridhome/bin/ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 302956
Used space (kbytes) : 5820
Available space (kbytes) : 297136
ID : 1087500263
Device/File Name : /dev/vx/rdsk/ocrvotedg/ocrvol
Cluster registry integrity check succeeded

6. ADD new OCR by providing asm diskgroup
( root@mysystem)[/] /oracle/11.2.0/gridhome/bin/ocrconfig -add +ocrdg

7. OCRCHECK after adding ASMDG for OCR
=========================================
(root@mysystem)[/] /oracle/11.2.0/gridhome/bin/ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 302956
Used space (kbytes) : 5820
Available space (kbytes) : 297136
ID : 1087500263
Device/File Name : /dev/vx/rdsk/ocrvotedg/ocrvol
Device/File integrity check succeeded
Device/File Name : +ocrdg
Cluster registry integrity check succeeded

Logical corruption check succeeded

8. DELETING Old OCR

(root@mysystem)[/] /oracle/11.2.0/gridhome/bin/ocrconfig -delete /dev/vx/rdsk/ocrvotedg/ocrvol


9. OCRCHECK after deleting old OCR
=====================================

(root@mysystem)[/] /oracle/11.2.0/gridhome/bin/ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 302956
Used space (kbytes) : 5820
Available space (kbytes) : 297136
ID : 1087500263
Device/File Name : +ocrdg
Device/File integrity check succeeded
Cluster registry integrity check succeeded