How to Move OCR and Voting Disk to ASM Diskgroup in 11gR2
We can use the following steps to migrate OCR and Vote Disk from RAW to ASM Disk.
Step 1:- Check the current OCR File status
bash-3.2$ ./ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 100192
Used space (kbytes) : 6376
Available space (kbytes) : 93816
ID : 1523118380
Device/File Name : /dev/rdsk/c1t1d0s0
Device/File integrity check succeeded
Device/File not configured
Device/File not configured
Device/File not configured
Device/File not configured
Cluster registry integrity check succeeded
Logical corruption check bypassed due to non-privileged user
Step 2:- Check the Voting Disk status
bash-3.2$ ./crsctl query css votedisk
## STATE File Universal Id File Name Disk group
— —– —————– ——— ———
1. ONLINE 3cdba20959096f37ffebf8b0da6b741e (/dev/rdsk/c1t1d0s1) []
Located 1 voting disk(s).
Step 3:- Create a new ASM diskgroup for OCR and Voting disk.
SQL> create diskgroup data external redundancy disk ‘/dev/rdsk/c1t1d0s4’, ‘/dev/rdsk/c1t1d0s5’;
SQL> alter diskgroup CRS mount;
Step 4:- Change the compatible version of the asm diskgroup to 11.2
SQL> select name,COMPATIBILITY,DATABASE_COMPATIBILITY from v$asm_diskgroup;
NAME COMPATIBILITY DATABASE_COMPATIBILITY
————————————————————————————–
DATA 10.1.0.0.0 10.1.0.0.0
CRS 10.1.0.0.0 10.1.0.0.0
SQL> alter diskgroup DATA set attribute ‘compatible.asm’=’11.2’;
SQL> alter diskgroup CRS set attribute ‘compatible.asm’=’11.2’;
Step 5:- Move the voting disk from raw to ASM with the crsctl command:
root>./crsctl replace votedisk +CRS
Step 6:- Check the voting disk on ASM after the migration
root>./crsctl query css votedisk
Step 7:- View existing OCR before migration using the ocrcheck command
root>./ocrcheck
Step 8:- ADD new OCR by providing ASM diskgroup
root> ./ocrconfig -add +CRS
Step 9:- Run ocrcheck again after adding asmdg for OCR
root> ./oracle/11.2.0/gridhome/bin/ocrcheck
Step 10:- Delete the old OCR with the ocrconfig command:
root> ./oracle/11.2.0/gridhome/bin/ocrconfig -delete /dev/rdsk/c1t1d0s0
Step 11:- Re-run ocrcheck again after deleting the old OCR
root> ./ocrcheck
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