Here are two handy links for trying to sort out where you want to be if you are trying to juggle attending these 3 conferences in parallel (like I am).

The JavaOne and Oracle Develop Keynotes can be found here:

The Oracle OpenWorld Keynotes can be found here:

The only conflicting Keynotes are on Wednesday morning at 8am when there is both an Develop and an OpenWorld keynote. I am interested in seeing the Develop Keynote as Ryan Martens from Rally is speaking, however Michael Dell is speaking at the OpenWorld Keynote, who I would also like to see. Might be a game time decision.