Tested Version
Verify OCR backup and check OCR location
Locate OCR backups
[root@grac42 ~]# ocrconfig -showbackup auto
grac42 2014/10/01 12:53:10 /u01/app/11204/grid/cdata/grac4/backup00.ocr
grac42 2014/10/01 08:53:09 /u01/app/11204/grid/cdata/grac4/backup01.ocr
grac42 2014/09/30 18:41:00 /u01/app/11204/grid/cdata/grac4/backup02.ocr
grac42 2014/09/30 09:16:23 /u01/app/11204/grid/cdata/grac4/day.ocr
grac42 2014/09/16 09:34:38 /u01/app/11204/grid/cdata/grac4/week.ocr
--> After an OCR corruption we need to restore: /u01/app/11204/grid/cdata/grac4/week.ocr
Locate our OCR location
[root@grac42 ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 262120
Used space (kbytes) : 4040
Available space (kbytes) : 258080
ID : 630679368
Device/File Name : +OCR
Check OCR DG content
ASMCMD> ls -l OCR/grac4/asmparameterfile/
Type Redund Striped Time Sys Name
ASMPARAMETERFILE MIRROR COARSE JUN 21 10:00:00 Y REGISTRY.253.850819057
N spfileASM.ora => +OCR/grac4/asmparameterfile/REGISTRY.253.850819057
ASMCMD> ls -l OCR/grac4/OCRFILE/
Type Redund Striped Time Sys Name
OCRFILE MIRROR COARSE OCT 02 09:00:00 Y REGISTRY.255.828888017
Restore OCR from weekly backup
Stop the CRS stack on all nodes and restart ASM in exclusive mode on grac42
[root@grac42 ~]# crsctl stop crs
[root@grac42 ~]# crsctl stop crs
[root@grac42 ~]# $GRID_HOME/bin/crsctl start crs -excl -nocrs
Remove the corrupted OCR file
ASMCMD> cd +OCR/grac4/OCRFILE
ASMCMD> rm REGISTRY.255.828888017
Restore OCR
[root@grac42 ~]# $GRID_HOME/bin/ocrconfig -restore /u01/app/11204/grid/cdata/grac4/week.ocr
ASMCMD> pwd
+OCR/grac4/OCRFILE
ASMCMD> ls -l
Type Redund Striped Time Sys Name
OCRFILE MIRROR COARSE OCT 02 10:00:00 Y REGISTRY.255.859888799
Restart CRS on all nodes any verify database startup
[root@grac42 ~]# crsctl stop crs
[root@grac42 ~]# crsctl stop crs
[root@grac43 ~]# crsctl start crs
[grid@grac42 bin]$ crs | egrep 'NAME|---|db'
NAME TARGET STATE SERVER STATE_DETAILS
------------------------- ---------- ---------- ------------ ------------------
ora.grac4.db ONLINE ONLINE grac42 Open
ora.grac4.db ONLINE ONLINE grac43 Open
Reference
Hi Helmut
In your great example you stop crs on the nodes. I can see you do it on the same node twice
[root@grac42 ~]# crsctl stop crs
[root@grac42 ~]# crsctl stop crs
[root@grac42 ~]# $GRID_HOME/bin/crsctl start crs -excl -nocrs
Should this be on grac42 and grac43?