Any recommendation on these books? Do they both cover 10G exclusively? If I have to get one, which one and why? Thanks. Oracle Wait Interface: A Practical Guide to Performance Diagnostics & Tuning (Osborne ORACLE Press Series) by Richmond Shee Oracle Database 10g Performance Tuning Tips & Techniques (Paperback) by Richard Niemiec (Author) -- //www.freelists.org/webpage/oracle-l