Virtually every time I've turned to this book for answers to specific Oracle questions, it has failed to have any useful answers. It does, however, have useful bits of advice like: "Warning: if you have instances or applications that are crashing, you may have some really serious problems." No kidding! "It is often more important to know where to find the answers than to know the answers themselves." Unfortunately, the answers I've needed have yet to be found in this book.