David Litchfield has devoted years to relentlessly searching out the flaws in the Oracle database system and creating defenses against them. Now he offers you his complete arsenal to assess and defend your own Oracle systems. This in-depth guide explores every technique and tool used by black hat hackers to invade and compromise Oracle and then it shows you how to find the weak spots and defend them. Without that knowledge, you have little chance of keeping your databases truly secure. 

The Oracle Hacker's Handbook. Hacking and Defending Oracle