Database upgrade 11.2.0.3

Hi,

We got request to upgrade oracle database/cluster from 10.2.0.3 to 11.2.0.3 database/cluster. First thing to notice is that, we cann’t directy upgrade cluster to 11.2.0.3 because we had 10.2.0.3 database underlying.

11.2.0.3 cluster cann’t run 10.2.0.3 database because of some bugs. So our upgradation setps involved

1) Upgrade 10.2.0.3 CRS to 10.2.0.5

2) Upgrade 10.2.0.3 db to 10.2.0.5

3) Upgrade 10.2.0.5 CRS to 11.2.0.3

4) Upgrade 10.2.0.5 db to 11.2.0.3

This is the strategy we proposed to client.