To Day i cleared SCBCD EXAM with 85%.
HFEJB is very good book. Very thankful to Kathy and Bates.
To get good score HFEJB is only enough.
But better to read specs also to become a real SUN certified.
Materials used for preparation:
1) Head first
EJB 2) SUN EJB Specifications
Mock Exam simulators which i used are
softSCBCD
Enthuware
Jandhyala Sastry
SCJP, SCWCD, SCBCD