Recently I've created a new ASM instance. In that I've created a diskgroup named DATA and created with Normal redundancy, but I supposed to create it with External redundacy. Now I need to change the redundancy to Normal of that diskgroup. I tried many steps, but at last I did change the redundancy and below are the steps I followed.
Finally I decided to do the dismount and drop the diskgroup using force option. Since this is a new instance and the diskgroup doesn't contain any data I used 'including contents'.
Trying to dismount the Diskgroup DATA in-order to change the redundancy, but in the attempt of dismounting the diskgroup I faced below issues.
So, I decided to take a bounce on the ASM Instance and dismount the diskgroup, it works. Now I tried to drop that diskgroup and recreate the same with External redundancy but no luck!
Facing the above issue, since the diskgroup is in mount state. Tried to dismount,disable the diskgroup but nothing worked.
Finally I decided to do the dismount and drop the diskgroup using force option. Since this is a new instance and the diskgroup doesn't contain any data I used 'including contents'.
Now I created the diskgroup with External redundancy as I intended.
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