4. Technique 1 : Creating a new cluster. Step 4 : Take notes of the current services configuration (prefered nodes,TAF policies,etc…) Step 1 : If your db is 10.2.0.1 or below so first upgrade it to 10.2.0.4 Step 2 : Taking (of course) a full backup of the db (rman or storage snapshot). The following steps are if you perform the upgrade on the existing servers: Step 3 : Backup spfile (if not in asm)/init.ora
5. Step 8 : Install 10.2.0.1 rdbms software and upgrade it to 10.2.0.4 (or the version of your DB). Technique 1 : Creating a new cluster. Step 5 : Uninstall rdbms software (if ASM and DB are separated then both of them ) and cluster software. Step 6 : Uninstall clusterware and cleanup the machine (use metalink:239998.1) Step 7 : Install 11gR2 Grid Infrastructure
6. Step 9 : Copy the backed up spfile/init.ora to it’s new place. Step 10 : Add the DB to the new cluster by using “srvctl add database” and then add instances by using “srvctl add instance” Step 11 : Add services by using srvctl add service. Technique 1 : Creating a new cluster.
