Even I have the same question. I am planning to give part I of OCMJEA and I donot know where to start. I have read a few topics here and understood that SCEA Sun Certified Enterprise Architect for Java EE Study Guide by Paul Allen, Joseph J. Bambara is something that everyone is mentioning. Do I start with that book or are there any other books I need to finish to refresh all the basic concepts and then go for exam preparation?
Also is there any difference between SCEA and OCMJEA (apart from the name) ? Are SCEA books still useful for OCMJEA?
Please help me with these questions, so I can start my journey towards OCMJEA.