Just so you know, the majority of brain dumps are illegal as they breach the copyright of the test:http://www.proprofs.com/forums/blog/nmr ... wentry=122
In addition, Oracle take the view that the use of braindumps constitutes a violation of the rules of certification. If you use braindumps Oracle are within their rights to remove your certification.
Learn the material and understand what it is you're being tested on. Don't just revise the answers to questions. This won't teach you how to do th job!