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Chapter 3: Introduction to Application Performance Analyzer for z/OS - Pg. 37

3 Chapter 3. Introduction to Application Performance Analyzer for z/OS This chapter describes the main functions provided by Application Performance Analyzer for z/OS, hereafter referred to as Application Performance Analyzer (APA). These functions can be used safely in both test and production environments. Application Performance Analyzer uses a low-impact sampling technology so it runs with very low processor overhead. It contains an online, instantaneous monitoring and measurement function for real-time