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opatch auto will take care, please refer:
Ordinarily, a Clusterware patch requires several manual steps before and after you apply the patch, such as:
Stopping all dependent databases
Stopping Clusterware resources
Running pre-patch scripts
Shutting down Clusterware
Running post-patch scripts
Starting Clusterware and dependent databases
The opatch auto command automates all of these tasks for patching the CRS home and all other applicable RDBMS homes.
951368 wrote:It will do a ROLLING upgrade - you execute the opatch auto on each node -one at a time. and yes it does everything needed to do the install. And it works great!!
I read the article. Perhaps still unclear, I am trying to apply GI PSU which includes DB PSU. So with opatch auto, does it stop all the instances,listener,dbconsole on that node and all the clusterware of the node. And automatically restarts everything???