This IBM Redbooks publication is intended for those familiar with most of the IBM-provided iSeries performance tools that are generally available through the i5/OS operating systems commands and iSeries Navigator interfaces and the additional-cost Performance Tools for iSeries, 5722-PT1, licensed program. iDoctor for iSeries is a set of software performance analysis tools and associated services that extend your ability to evaluate the health of your iSeries-based system by gathering detailed information and providing automated, graphical analysis of this data. One of these tools, Job Watcher, is the key next-step advanced tool for analyzing detailed performance data. This book: This book's objective is to enhance the performance analyst’s proficiency in using Job Watcher as a key tool in the performance analysis tool kit.