A few years back I had the pleasure of meeting Ben Prusinski at Oracle Open world. Ben has published several books on Oracle Internals and Debugging. In his most recent project he teams with Guenadi Jilevski and Syed Jaffer Hussain to write
“Oracle 11g R1/R2 Real Application Clusters Handbook”. I have only just cracked the cover but already know this will be a good resource for the beginner and seasoned professional. If you want to look for yourself, you can preview or order the book through PACKT publishing.