I attempted 1Z0-902 certification exam and got 92% at first attempt. My decision to give oracle changed my life for good but the best decision that i took was to subscribe to dbexam.com site. The site has Oracle Exadata Database Machine X9M Implementation Essentials certification practice tests that really made a difference to my preparation. I gave 1Z0-902 practice tests for 2 months. The site gave me free access for 60 days. This was very helpful. My result proved that I invested hard work and money in a good brand. The site gives simulated tests and an environment that makes you feel that you giving the actual test. It made all the difference. The site goes an extra mile to make your preparation for the exam easy and hassle-free.