Hello all - I passed the part 1 of the exam today with 65%. This is pretty low but I think it is good considering that I spent only 1 week for the preparation. The only book I read was the study guide by Mark Cade and Humphrey Sheil.
I also used the mock exam that I bought from oracle website. Both exams were pretty good.
One tip --- read this book and make sure you work on the exercises at the end of its chapters very well.
If you have worked just enough on ejb's, jms, web services, design pattern's it is easy to pass this exam.