Any of Howard’s written work is always excellent and a $5.95 (USD) fee to get the book is extremely fair. I hope that O'Reilly make a habit of releasing books like this example.
So what is in it for us Oracle security enthusiasts? - This ebook includes a chapter on the security enhancements added in 9i. It also includes a chapter on the Log Miner enhancements. This is a very useful tool in the security person’s arsenal as it is great for forensics work. The book is an excellent read even if it’s mostly not about security. As I have said previously here, to keep up with Oracle security also means knowing as much as possible about the rest of Oracle and also about security. To secure Oracle effectively you need to think like a hacker.