I bought this book as an Oracle Developer hoping to improve the efficiency of my coding. The name "Programming Techniques and Solutions" lead me to think this was a book for developers rather than DBA's.
This book however is a lot more suitable for DBA's, with some sections that are not available for application developers.
If you are a DBA, I would definitely recommend this book as Thomas Kyle definitely knows his stuff. If you are an application developer working with PL/SQL, then there are more suitable books for us.