Vasu,
I have completed the Oracle Jcert track and am now preparing for the IBM Jcert track.I am on track to take the IBM VisualAge for Java test, very soon!
I have about 3.5 years of experience in IT and have worked mostly on Mainframes.I still have to work on a live Java project.However, with these certifications I have gained enough confidence to work on actual projects.Infact, I have executed many small Java assignments on an independent basis for my earlier firm.Had received a positive feedback from them.
From your post, I believe you would like to appear for Test 486 (Vendor Independent Jcert test) first.You would find lots of information in this forum for this test.All the pre-assessment questions have been discussed here.For this test the 2 recommended books are enough!
I had suggested in one of threads of JavaRanch forum, that IBM is the way to go for the Jcert track.It is because its products (Mainframes,AS/400,AIX,etc.) have already been established in the industry and for most of the expected migration projects to web, you would get better support from IBM than any other vendor.
Having said that, I wouldn't discount others.Other Jcert vendors are also doing well from software development point of view; i.e building applications right from scratch.For example, Oracle Business Components for Java (BC4J) is an extremely good solution to develop business solutions.It is a Java-XML solution, which I see as having every chance of scoring more points than
EJB solution.However, when it comes to integration of existing business systems, IBM stands out in the Enterprise market!
Hope this helps,
Sandeep
SCJP2, OCSD(Oracle JDeveloper), OCED(Oracle Internet Platform)