Overview

Learn a methodology to improve the performance of a large-scale z/OS IMS/TM data communication system. This course explains the impact of user-specified options on IMS performance, how to determine performance bottlenecks by interpreting information from certain performance reports, and how to use the information gained to implement a plan to improve the performance of an IMS system.

Audience

This advanced course is for experienced IMS system programmers or performance analysts responsible for the performance of a large-scale IMS DB/DC system.

Prerequisites

You should have moderate level of knowledge of IMS/TM which can be gained through work experience or through completing the IMS System Programming: Database and Transaction Management - ILO (CMW11)

Objective

• Create and implement a performance improvement plan based on the methodology presented
• Discuss the performance options available to the IMS user
• Describe the performance impact of the IMS storage pools and datasets and their interrelationships
• Interpret the information contained in performance reports
• Analyze the performance reports to determine performance bottlenecks in the IMS system

Course Outline

• Monitoring and Tuning Overview
• IMS Structure and Major Control Blocks
• The IMS Logger and Pool Management
• IMS Communication Component
• IMS OTMA (Open Transaction Management Access) Communication Component
• z/OS Considerations for IMS
• IMS Scheduling
• IMS Program Loading Options
• IMS Program Elapsed Time
• IMS Database Buffering