Dan Hotka is a Training Specialist and an Oracle ACE Director who has over 32 years in the computer industry, over 27 years of experience with Oracle products. His experience with the Oracle RDBMS dates back to the Oracle V4.0 days. Dan’s latest book is the Oracle SQL Tuning: A Close Look at Explain Plans by Amazon. He is also the author of SQL Developer Handbook by Oracle Press, Oracle9i Development By Example, and Oracle8i from Scratch by Que and has co-authored 7 other popular books including the Database Oracle10g Linux Administration by Oracle Press. He is frequently published in Oracle trade journals, and regularly speaks at Oracle conferences and user groups around the world.