Post date: 23-May-2009 05:46:11
Following link is from oracle FAQ website, it is actually a good one. I have a video prepared from my test server for this subject, but due to site space constraint i am not able to attach it. Please follow this link. You may also use the steps if you want to change the redundancy of your existing diskgroup, as it is not possible to change the redundancy of the diskgroup after it is prepared. You have to move the data out of that diskgroup and then drop the diskgroup and create it with required redundancy. Enjoy !!