Dealing with performance problems on z/OS
Use this topic to investigate IBM MQ for z/OS performance problems in more detail.
Performance problems are characterized by the following:- Poor response times in online transactions
- Batch jobs taking a long time to complete
- The transmission of messages is slow
Performance problems can be caused by many factors, from a lack of resource in the z/OS system as a whole, to poor application design.
The following topics present problems and suggested solutions, starting with problems that are relatively simple to diagnose, such as DASD contention, through problems with specific subsystems, such as IBM MQ and CICS or IMS.- IBM MQ for z/OS system considerations
- CICS constraints
- Dealing with applications that are running slowly or have stopped on z/OS
Remote queuing problems can be due to network congestion and other network problems. They can also be caused by problems at the remote queue manager.
- IBM MQ for z/OS system considerations
The z/OS system is an area that requires examination when investigating performance problems. - CICS constraints
CICS constraints can also have an adverse effect on IBM MQ for z/OS performance. Use this topic for further information about CICS constraints. - Dealing with applications that are running slowly or have stopped on z/OS
Waits and loops can exhibit similar symptoms. Use the links in this topic to help differentiate between waits and loops on z/OS.
Parent topic: Problem determination on z/OS
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