Upgrading to RAC 11g R2 What you should know

How to upgrade?
Recommended: “Swing Kit”
Set up a new cluster on separate hardware
Install Grid Infrastructure at your leisure
Avoid time pressure
Create a physical standby on the new cluster
At a pre-defined outage window, perform a switchover
Remember: you don’t need to upgrade the database at the same time as you upgrade to Grid Infrastructure
The trick is to keep other standby databases in sync

Other upgrade options
If you don’t have Swing Kit…
Upgrade the existing software stack
Grid Infrastructure is an out of place upgrade
New Oracle home
Pre 11.2 Clusterware home and ASM home made redundant after successful upgrade
Out of place upgrade should make downgrade easier
Have not tested downgrade personally
Usually only one in the audience did

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