It looked like I was going to have to upgrade one of our DEV databases from 10.2.0.1 to 10.2.0.4 today. I was a bit nervous about doing that so I tried it on one of my test databases first. It didn’t seem to work. Now it also seems that the issue we were having with the DEV database has gone away, it was an application issue. So I don’t really need to upgrade it now. Which is good. I might still try upgrading my test database though. The process seems different to a recent version 9 patch I did and I want to make sure it get it working and understand how it works and what happens.