I think the best learning path towards the SCBCD 5.0 certification (IF you don't want to read directly the specification) is:
1- Enterprise JavaBeans 3.0 - O'Reilly.
2- Pro EJB 3
Java Persistence API - Apress. (Chapters 3 to 7)
3- Mikalai Zaikin Notes (With the Specification in the other hand since MZ maps every certification objective to the specification's specific chapters).
It takes around 3-5 months with 2-3 hours of daily work.
Hope this helps,