Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good book but not for everyone

This is an excellent book but is not for everyone: it's written for db architects, managers and people who want to gain in-depth understanding of the way Oracle works. I am an DBA and I expected a little more hands-on approach (it's '24x7 Tips and Techniques' book so it could have some kind of backup scripts or recovery principles for various platforms)- in short, it should concentrate more on keeping database up and running and minimizing time needed for database recovery than on tuning (of course, tuning it is important but this is not a tuning book). Also, I think the book is unneceseraly big (are authors paid per page they write?) Anyway, I am satisfied to have it in my library - it's definitely worth to have it as long as you know what you can get from it and what you can't.