As a DBA I was really looking forward to reading this book and I wasn't disappointed. It is perhaps, a little hard-going in places, but this is not at all surprising as the subject it covers is complex. I thought the book was well structured and very well written. Each chapter contained lots of detailed information, plenty of interesting examples and a list of downloadable scripts to illustrate the text. All in all, I thought this was an excellent book and a very useful and comprehensive reference. It comes highly recommended and definitely deserves a place on my Oracle bookshelf.