Note: A new PL/SQL book "Beginning PL/SQL: From Novice to Professional" was recently published by Apress. Please note the errata as published by Apress:
Erratum: Apress's listing of Connor McDonald as technical reviewer on the copyright page of the book (in the first printing) was a production mistake. Apress's technical reviewer for the book is Larry Johnson. Apress apologizes for the mixup.