Does anyone has any idea what is the differnece between these two exams - 101 and 147. Both are on PL/SQL. I am preparing for 147 and there is no book for that exam from the certification point of view. But there is one for the 101 exam. I am just asking this if I could use that book for the 147. Currently I am following the book Oracle 9i PL/SQL Programming for the preparation. I was thinking of the certification book for the practice sample exams etc. Thanks Vibha.