Oracle DB Upgrade TO DO LIST

[KENNETH JANUSZ]

I am looking at a project to upgrade a number of Oracle development, test and production DB's to newer releases.  I have reviewed Oracle's list of tasks from OTN.  I would like your feedback on other tasks, etc. that should be included.  Is there a list somewhere on the web that gives a comprehensive list of tasks that need to be accomplished and "gotchas"?   TIA, Ken Janusz, CPIM