I just finished reading Sam Alapati’s 12c OCP upgrade book for the first time and I really like it because of the content that it covered which I hadn’t discovered through my study of the Oracle manuals. Also, it did a good job explaining some things that Oracle’s manuals left unclear.
After reading each chapter I took the end of chapter test and got between 60% and 75% of the questions right. Next I plan to take the computer based test that was on the CD that came with the book and which covers both parts of the upgrade exam.
I did find minor errors throughout the book, but I still found it very useful especially after having already studied the same topics on my own without a study guide like this one to direct me. The author’s insights into the test and the material it covers adds value because they guide me to the areas that I need to focus on.