There are no hardware requirements for IBM Rational ClearCase.
Enterprises around the world use IBM® Application Performance Analyzer for z/OS® (APA) to help them identify areas of low performance in their applications. Through non-intrusive sampling, IBM Application Performance Analyzer for z/OS provides interactive reports on how your mainframe applications are consuming available resources. Available in ISPF 3270 and Eclipse-based GUI interfaces, IBM Application Performance Analyzer for z/OS helps identify system constraints and will assist in improving application performance. With the power of APA’s source-code mapping, you can maximize existing application performance and improve response times of online transactions and batch job throughput.