The third (and hopefully final phase) of Oracle Application Express 4.0 Early Adopter is now available. A new instance with the latest build of Application Express 4.0 is now available on http://tryapexnow.com.
If you have tried to find information on Exadata you'll know how hard it is. Based on a tip, I found last year's OOW sessions and then started to google those to see if I could find one of the presentations.
With permission of the author of the slides, I give you Exadata Top 10 Lessons Learned
When generating SQL for testing, make sure you set the database to the database you will be running against.
I found this out the fun way, of course, by going through, grabbing the SQL from the logs, and then modifying said SQL to run against Oracle. I should have paid attention to that "Check Consistency" warning.