This chapter covered many different areas related to WebLogic Server application performance, including basic principles and tuning options, design patterns and best practices, and specific performance best practices and troubleshooting tips. As you can tell from this wide- ranging discussion, there is a lot to know and consider when tuning or troubleshooting a complex J2EE system. Nothing beats experience when it comes to successful performance tuning, and experience is gained only by doing, so go do some performance tuning!