I cleared OCPJBCD 5.0 exam on Saturday 19th March 2011 with 98%. It took me whole 3 months to prepare for this exam. Firstly being new to EJB province, had to start with EJB 3 In Action. Further took up EJB 3.0 and Specifications for EJB and JPA. Endless hands-on and reading aforementioned documents actually helped me a lot to clear this exam.