Interesting questions on Grid Control Patching Automation

In a recent Grid Control Webinar, I heard some interesting questions
by clients that were answered by the Grid Control patching automation
expert in Oracle, Hari, who also writes on this EM Blog. The configuration
question was answered by another Grid expert, Shahid.

I am sharing these answers with you.

Question: Can rollback of patches be done using Grid Control?

Answer: As a part of the procedure, there are validate steps if the patch is
rightly applied or not. Rollback is not available Out-of-box for now, but
you could insert the step into the framework using the metalink note
info - :577557.1

Question: May I know that how frequently Grid Control gathers
configuration changes?

Answer: It is upto you. The interval is configurable. e.g. in the compliance
scenario you would want to gather changes at real time while for standard
application configuration it may be done once or twice a day.

Question: How do I get the details on how to use sudo etc. for patching?

Answer: See the Administrator's guide for provisioning and patching.