I dont know EJB, and never worked on it before. But would like to take up this exam. I work fulltime do you think i can prepare myself for this exam in 3 months. without any instructor led coaching. I passed my SCJP .And i know Hibernate.
I think thats possible ;)
I think that new EJB standard is very easy to learn. Read for example Manning EJB 3 in Action, after that MZ_SCBCD_5_Study_Guide, do few mock exams (enthruware test is quite cheap and I think it's better then whizzlabs).