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Hello,1 person found this helpful
backup your ocr and voting definition with the standards tools. You can look and configure this Backup with the ocrconfig tool. Default would be $ORACLE_HOME/cdata/<cluster_name/.
ASM Backup is not realy need, ok you should have a copy of your init+ASM.ora file for desaster. The md_backup tool is to Backup the Disk Layout and Header Definition in ASM.
In 11gR2 Oracle automatically backs up OCR and VOTING devices.1 person found this helpful
Hi NB,1 person found this helpful
In 11gR2 Voting Disk is automatically backed up as part of OCR backup.
Have a look http://docs.oracle.com/cd/E11882_01/rac.112/e16794/votocr.htm#CWADD90970 how to do OCR backup
Hope it helps
>1 person found this helpful
I have basic below 2 questions concerning ASM and OCR and voting disks datawith the help of md_backup you can backup the metadata of the ASM instance .
1. Is there any way to backup the ASM instance? Is that needed in a production environment? What is the best way to do that ? is it through RMAN ?
Nice articles from arup on this
2. My OCR and Voting disks info are stored on ASM diskgroup +OCR, should I backup that? I am seeing md_backup command in asmcmd helpOCR backup detail -http://docs.oracle.com/cd/E11882_01/rac.112/e16794/votocr.htm#i1012456
The voting disk data is automatically backed up in OCR as part of any configuration change.
So as a summary there is no need to backup my ASM or my OCR and voting disks as per the below;
All what I should do is to use md_backup to backup all my ASM diskgroups metadata.
Automatic backups: Oracle Clusterware automatically creates OCR backups every four hours. At any one time, Oracle Database always retains the last three backup copies of OCR. The CRSD process that creates the backups also creates and retains an OCR backup for each full day and at the end of each week. You cannot customize the backup frequencies or the number of files that Oracle Database retains.
For more info you can refer below links1 person found this helpful
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