Case: Moving to Redhat Linux 5/Oracle Enterprise Linux 5, which does not support Raw filesytem. Steps: (these steps can be performanced on 11gR2) 1.) Check the current location of ocr file:
[root@host1 bin]# ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 262120
Used space (kbytes) : 3004
Available space (kbytes) : 259116
ID : 798462606
Device/File Name : /mnt/cludata/ocrfile
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 succeeded
2.) Add a Mirror OCR location else you might encounter error :PROT-28: Cannot delete or replace the only configured Oracle Cluster Registry location i.) Create the file (as root)
cp /dev/null /mnt/cludata/ocrmirror chown root:dba /mnt/cludata/ocrmirror chmod 640 /mnt/cludata/ocrmirror [root@host1 cludata]# pwd /rmanbkp1/cludata [root@host1 cludata]# ls -lrt total 23784 -rw-r----- 1 root dba 272756736 Aug 31 12:37 ocrfile -rw-r----- 1 root dba 0 Aug 31 13:12 ocrmirror -rw-r----- 1 oracle dba 21004288 Aug 31 13:12 cssfile
ii.) Add the mirror OCR file
[root@host1 cludata]# ocrconfig -add /rmanbkp1/cludata/ocrmirror
[root@host1 cludata]# ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 262120
Used space (kbytes) : 3004
Available space (kbytes) : 259116
ID : 798462606
Device/File Name : /mnt/cludata/ocrfile
Device/File integrity check succeeded
Device/File Name : /mnt/cludata/ocrmirror
Device/File integrity check succeeded
Device/File not configured
Device/File not configured
Device/File not configured
Cluster registry integrity check succeeded
Logical corruption check succeeded
3.) Check ASM Diskgroup compatibility (login as sqlplus / as sysasm)
col name format a10 col COMPATIBILITY format a20 col DATABASE_COMPATIBILITY format a20 select name,COMPATIBILITY,DATABASE_COMPATIBILITY from v$asm_diskgroup; NAME COMPATIBILITY DATABASE_COMPATIBILI ---------- -------------------- -------------------- DG_ARCH01 10.1.0.0.0 10.1.0.0.0 DG_SYS01 10.1.0.0.0 10.1.0.0.0 DG_TEMP01 10.1.0.0.0 10.1.0.0.0 DG_DATA01 10.1.0.0.0 10.1.0.0.04.) Upgrade the compatibility to 11.2 compatible.asm
SQL> alter diskgroup DG_ARCH01 set attribute 'compatible.asm'='11.2'; Diskgroup altered. SQL> alter diskgroup DG_SYS01 set attribute 'compatible.asm'='11.2'; Diskgroup altered. SQL> alter diskgroup DG_TEMP01 set attribute 'compatible.asm'='11.2'; Diskgroup altered. SQL> alter diskgroup DG_DATA01 set attribute 'compatible.asm'='11.2'; Diskgroup altered. SQL> select name,COMPATIBILITY,DATABASE_COMPATIBILITY from v$asm_diskgroup; NAME COMPATIBILITY DATABASE_COMPATIBILI ---------- -------------------- -------------------- DG_ARCH01 11.2.0.0.0 10.1.0.0.0 DG_SYS01 11.2.0.0.0 10.1.0.0.0 DG_TEMP01 11.2.0.0.0 10.1.0.0.0 DG_DATA01 11.2.0.0.0 10.1.0.0.0Update compatible.rdbms
SQL> alter diskgroup DG_ARCH01 set attribute 'compatible.rdbms'='11.2'; Diskgroup altered. SQL> alter diskgroup DG_SYS01 set attribute 'compatible.rdbms'='11.2'; Diskgroup altered. SQL> alter diskgroup DG_TEMP01 set attribute 'compatible.rdbms'='11.2'; Diskgroup altered. SQL> alter diskgroup DG_DATA01 set attribute 'compatible.rdbms'='11.2'; Diskgroup altered. SQL> select name,COMPATIBILITY,DATABASE_COMPATIBILITY from v$asm_diskgroup; NAME COMPATIBILITY DATABASE_COMPATIBILI ---------- -------------------- -------------------- DG_ARCH01 11.2.0.0.0 11.2.0.0.0 DG_SYS01 11.2.0.0.0 11.2.0.0.0 DG_TEMP01 11.2.0.0.0 11.2.0.0.0 DG_DATA01 11.2.0.0.0 11.2.0.0.05.) Move OCR file to ASM:
ocrconfig -replace /rmanbkp1/cludata/ocrfile -replacement +DG_ARCH01 ocrconfig -replace /rmanbkp1/cludata/ocrmirror -replacement +DG_SYS016.) Check OCR:
[root@host1 cludata]# ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 262120
Used space (kbytes) : 3004
Available space (kbytes) : 259116
ID : 798462606
Device/File Name : +DG_ARCH01
Device/File integrity check succeeded
Device/File Name : +DG_SYS01
Device/File integrity check succeeded
Device/File not configured
Device/File not configured
Device/File not configured
Cluster registry integrity check succeeded
Logical corruption check succeeded
7.) Restart CRS to check if it comes back fine.NOTE: You will not be able to stop just ASM now, as the OCR file is in ASM
8.) Check OCR:( as oracle user )
[oracle@host1]~% /home/oragrid/product/11.2/bin/cluvfy comp ocr -n all -verbose Verifying OCR integrity Checking OCR integrity... Checking the absence of a non-clustered configuration... All nodes free of non-clustered, local-only configurations ASM Running check passed. ASM is running on all cluster nodes Checking OCR config file "/etc/oracle/ocr.loc"... OCR config file "/etc/oracle/ocr.loc" check successful Disk group for ocr location "+DG_SYS01" available on all the nodes Disk group for ocr location "+DG_ARCH01" available on all the nodes Checking size of the OCR location "+DG_SYS01" ... Size check for OCR location "+DG_SYS01" successful... Size check for OCR location "+DG_SYS01" successful... Size check for OCR location "+DG_SYS01" successful... Size check for OCR location "+DG_SYS01" successful... Checking size of the OCR location "+DG_ARCH01" ... Size check for OCR location "+DG_ARCH01" successful... Size check for OCR location "+DG_ARCH01" successful... Size check for OCR location "+DG_ARCH01" successful... Size check for OCR location "+DG_ARCH01" successful... WARNING: This check does not verify the integrity of the OCR contents. Execute 'ocrcheck' as a privileged user to verify the contents of OCR. OCR integrity check passed Verification of OCR integrity was successful.9.) Move Voting disk now
[root@host1 cludata]# crsctl replace votedisk +DG_ARCH01 CRS-4256: Updating the profile Successful addition of voting disk aa5d2a1024384faebf3f2c108e6b203a . Successful deletion of voting disk 253472991d324fb9bfab1f1301385697. Successfully replaced voting disk group with +DG_ARCH01. CRS-4256: Updating the profile CRS-4266: Voting file(s) successfully replaced10.) Check Voting Disk:
[root@host1 cludata]# crsctl query css votedisk ## STATE File Universal Id File Name Disk group -- ----- ----------------- --------- --------- 1. ONLINE aa5d2a1024384faebf3f2c108e6b203a (ORCL:DISK2) [DG_ARCH01] Located 1 voting disk(s). [root@host1 cludata]# crsctl check crs CRS-4638: Oracle High Availability Services is online CRS-4537: Cluster Ready Services is online CRS-4529: Cluster Synchronization Services is online CRS-4533: Event Manager is online11.) Check contents of ocr.loc file
[root@host1 cludata]# more /etc/oracle/ocr.loc #Device/file /mnt/cludata/ocrmirror getting replaced by device +DG_SYS01 ocrconfig_loc=+DG_ARCH01 ocrmirrorconfig_loc=+DG_SYS01 local_only=falseALL LOOKS GOOD NOW !!!
