mounting file system in exclusive mode in cluster

[Neeraj Bajpai]

Hi all

I had a problem in oracle database, it crashed and now need recovery. But my database in HP
cluster (two node HPUX 11.x) so when oracle got the ora-01113 and ora-01110 error it umonted all the file system and i am not able to do the recovery.

So I would like to confirm the following commands and procedure is ok or not ?

1. Taking out all the file system from the cluseter mode.
# vgchange -c n

2. Activate the volume gruop in non-cluster mode
# vgchange -a y

3. mount all the file system and do the recovery

4. umount and deactivate the volume group
# vchange -a n

5. run the cluster for including the volume in the cluster mode again.
# cmruncl

6. include all volume in the cluster mode
# vchange -c y

7. stop and start the cluster again.


thanks in advance for your valuable time.

[Sanjiv Sharma_1]

Hi Neeraj,

The steps seems to be ok.
You can go ahead.

[A. Clay Stephenson]

That will work but there should be no need to do anything except a vgchange -a e and then manually mount the filesystems.

[SS_6]

A.clay is right for exclusive mode activation. You can also touch debug file in /etc/cmcluster directory. Start the cluster and it will mount the file systems(as per standard cluster configuration)but will not invoke any start/stop script. This is also good for troubleshooting. Remove debug file at the last.

[Printaporn_1]

Hi,

as more convenient you better use service guard to start the package cause you will get complete file system and right mount point.
make copy of /etc/cmcluster//control.sh as it backup.
remove custom script to start database just let the control script mount file system for you.
then start recovery.

HTH.

[Neeraj Bajpai]

thanks to all of you.
It is ok now..