Oracle security expert David Knox explains how to design and develop an integrated, secure Oracle environment. “In my experience in the security world, including 32 years at the Central Intelligence Agency, I’ve not found anyone with more experience in the theory and practice of protecting your data than David Knox.” --Dave Carey, former Executive Director of the CIA
It is a good book about the security basics of Oracle. The author did a good job of covering VPD (Row Level Security) and how to use it including the role of contexts. He also included a chapter about Oracle Label Security which is a different spin on row level security that originated out of the Government work that Oracle did.
Definitely worth a read for those Oracle professionals who wanted to get a broad overview of the different security mechanisms in Oracle and recommendations on how and when to implement them.