SUMMARY:   This course covers the performance aspects of a CICS/ESA system and how to measure and tune the system to meet performance objectives. The course material is reinforced with classroom examples and review of students' systems. The course concentrates on CICS/ESA V4.1 with its changes and considerations. The course is also appropriate for CICS/ESA V3.1, V3.2 and V3.3. AUDIENCE:   This course is designed for system programmers/analysts responsible for installation, support, debugging, or performance of a CICS/ESA system. Very experienced CICS application programmers wishing to gain knowledge on efficient use of CICS facilities will also benefit from this course. PREREQUISITES:   Before taking this course, you should have experience installing, tailoring, or maintaining a CICS/ESA (any release). If you are in the process of migrating to CICS/ESA, prior experience with CICS in an earlier version satisfies this prerequisite. DURATION:   4 days APPROACH:   Class consists of classroom lecture and lab sessions. OBJECTIVES:   After completion of this course, you should be able to: Describe the elements of performance analysis and resource management Understand methods used to measure and tune a CICS/ESA system List resources used and managed by CICS/ESA and demonstrate methods used to minimize resource consumption Obtain information about CICS/ESA resource utilization Describe CICS/ESA V4.1 storage, task, file, and network management and how to monitor these functions List performance considerations of the CICS DB2 and CICS DL/1 interfaces Identify resource contention and proper use of tuning parameters to control contention Understand performance considerations for interconnected CICS systems COURSE CONTENT:   INTRODUCTION Objectives and Agenda Resource Management Choices CICS/ESA Performance Benefits STATISTICS Statistics Collection, Processing, and Reporting Unsolicited Statistics DFHSTUP Control Statements Statistics Tuning The DFH0STAT Program Monitoring STORAGE MANAGEMENT Major Changes in Storage Management CICS/ESA Address Spaces DSA and Subpool Management Setting the DSA Sizes (DSALIM, EDSALIM) Storage Cushions (only in V3) Dynamic Storage Program Compression Measuring, Monitoring, and Controlling Compression MXT Controlled Storage MVS Managed Storage CMDPROT STORAGE PROTECTION/TRANSACTION ISOLATION Storage Protection Options Subsystem Storage Protection Facility (SSP) Transaction Isolation TRANSACTION MANAGER AND DISPATCHER Task Creation and Dispatching MaXimum Tasks (MXT) Active MaXimum Tasks (AMXT) - V.3.3 and earlier TRANCLASS\Class MaXimum Tasks (CMXT) PURGETHRESH\Class MaXimum Tasks LIMit (CMXTLIM) Priority of Transactions Priority Aging (PRTYAGE) System Exit Time (ICV) RUNAWAY\Runaway Task Time (ICVR) Task Time Outs (RTIMOUT / DTIMOUT) System Purgability (SPURGE) VSAM VSAM Shared Resources Tuning NSR Buffers Tuning LSR Buffers Buffer Waits Buffer Pools in HIPERSPACE VSAM Strings VSAM Subtasking CICS Data Tables TERMINAL CONTROL VTAM High Performance Option RAPOOL Tuning RAMAX IOAREALEN PSDINT (Persistent Session Delay) PVDELAY TCSACTN/TCSWAIT Inbound Message Chain Assembly SENDSIZE / RECEIVESIZE ICVTSD Bracket Control MSGINTEG / PROTECT options OPNDLIM Terminal AutoInstall DFHNET Terminal Data Compression 3174 Local Format Storage MRO/ISC IOAREALEN Cross Memory Services/XCF/MRO Number of Sessions Contention Winners / Losers Controlling Cross-System Traffic MAXSMIR (only in V3) MROLRM MROBTCH USRDELAY/ISRDELAY (only in V3) PVDELAY QUEUELIMIT/MAXQTIME SNSCOPE OTHER TOPICS Trace, Recovery and Restart Program Management Temporary Storage Transient Data CMDSEC (Command Security) CONFDATA/CONFTXT OPERATING SYSTEM CONSIDERATIONS CICS-DL/I INTERFACE TUNING CICS DB2 INTERFACE TUNING