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1) OCR
1) Normal cluster filesystem
2) ASM diskgroup
1) Identify the manual or automatic OCR backups
2) Shutdown grid on all the nodes
3) ocrconfig -restore
4) restart the cluster
When OCR is under ASM
1) Identify our backup
2) Shutdown the grid on all the nodes
3) crsctl start crs -excl
4) $CRS_HOME/bin/crsctl stop res ora.crsd -init
5) If the asm disk is lost ,recreate them --> make sure name disk as earrlier
OCR ---> vote1 --
6) sqlplus or asmcmd--> create the disk group -> OCR
7) # cd $CRS_HOME/cdata/rac_cluster1/
# $CRS_HOME/bin/ocrconfig -restore backup00.ocr
8) Start the crs damon
$CRS_HOME/bin/crsctl start res ora.crsd -init
9) Recreate the voting disk
# $CRS_HOME/bin/crsctl replace votedisk +OCR
10) Recreate the ASM spfile under the new diskgroup
a) create a dummy initASM1.ora
b) sqlplus / as sysasm
c) create spfile='+OCR' from pfile
11) Shutdown the cluster
12) Make ASM disks are available
13) Restart the cluster on all the nodes
