Upgrade to 11.2.0.3 from 11.2.0.3 (DB & GRID)
After reading various documents, it looks like I have to do this following for each environment:
1) upgrade opatch to minimum of 11.2.0.1.3 for all GRID and DB homes
2) Apply 11.2.0.2.1 (aka PSU1) against all GRID and DB homes
3) Apply one-off patch 12539000
(required for all GRID; recommended for DB also)
4) Upgrade to 11.2.0.3
This seems like a lot of work. Have I got this correct?