Re: Rolling upgrades and client connection

If I understand you question correctly, these are the steps to follow for a rolling patch install:

1. Stop the instance in node 1 and all other relevant processes (asm if running from the same home, listener, em...)

2. Install the patch with the OPatch option -local

3. Restart services from step 1

3. Repeat for other nodes.

All that is under the assumption that the patch can be installed in a rolling fashion.

Harel Safra 

hrishy wrote:

Hi   I have a question on rolling upgrades of 2 node RAC databases.   I understand while performing a rolling upgrade i need to stage the patch to a directory and just launch Opatch from that directory and Opatch would roll over the patch to the remote node and apply it there .   My question is what happens to the existing and new user connections as the database is not stopped what happens when the patch is being applied to node 1   a)Users are already connectted to node 1 b) new users connection who are attempting to connect to node 1     regards Hrishy