Amazon has just made the book available and reviews have already been posted on their site. You can checkout the book and reviews at:
http://www.amazon.com/Oracle-Database-Performance-Tuning-Techniques/dp/0072263059
The book explains how to monitor, analyze, and optimize Oracle Database 10g using the tested methods and insider advice contained in this definitive volume. The book is packed with detailed case studies, best practices, and code samples illustrating Oracle's new tuning features. Find out how to select optimal indexing options, effectively manage drives and disk arrays, troubleshoot queries, and reliably predict future performance. You'll also get detailed coverage of PL/SQL performance enhancements, initialization file tweaks, and the latest database surveying and reporting utilities.