Problem determination on z/OS
IBM MQ for z/OS®, CICS®, Db2®,
and IMS produce diagnostic information which can be
used for problem determination.
This section contains information about the following topics:
The recovery actions attempted by the queue manager when a problem is detected.
IBM MQ for z/OS abends, and the information produced when an abend occurs.
The diagnostic information produced by IBM MQ for z/OS, and additional sources of useful information.
The type of information provided to help with problem determination and application debugging depends on the type of error encountered, and the way your subsystem is set up.
See the following subtopics for more information about problem determination and diagnostic
information on IBM MQ for z/OS.
IBM MQ for z/OS performance constraints
Use this topic to investigate z/OS resources that can cause performance constraints.
IBM MQ for z/OS recovery actions
Use this topic to understand some of the recovery actions for user detected and queue manager detected errors.
IBM MQ for z/OS abends
Abends can occur in WebSphere for z/OS or other z/OS systems. Use this topic to understand the IBM MQ system abend codes and how to investigate abends which occur in CICS, IMS, and z/OS.
Diagnostic information produced on IBM MQ for z/OS
Use this topic to investigate some of the diagnostic information produced by z/OS that can be useful in problem determination and understand how to investigate error messages, dumps, console logs, job output, symptom strings, and queue output.
Other sources of problem determination information for IBM MQ for z/OS
Use this topic to investigate other sources of information for IBM MQ for z/OS problem determination.
Diagnostic aids for CICS
We can use the CICS diagnostic transactions to display information about queue manager tasks, and MQI calls. Use this topic to investigate these facilities.
Diagnostic aids for IMS
Use this topic to investigate IMS diagnostic facilities.
Diagnostic aids for Db2
Use this topic to investigate references for Db2 diagnostic tools.
Troubleshooting the connection to Product Insights from IBM MQ for z/OS
The IBM Cloud Product Insights service is no longer available. For more information, see this blog post: Service Deprecation: IBM Cloud Product Insights .
IBM MQ for z/OS dumps
Use this topic for information about the use of dumps in problem determination. It describes the steps you should take when looking at a dump produced by an IBM MQ for z/OS address space.
Dealing with performance problems on z/OS
Use this topic to investigate IBM MQ for z/OS performance problems in more detail.
Dealing with incorrect output on z/OS
Incorrect output can be missing, unexpected, or corrupted information. Read this topic to investigate further.
Dealing with issues when capturing SMF data for the channel initiator (CHINIT)
Channel accounting and CHINIT statistics SMF data might not be captured for various reasons.
Parent topic: IBM MQ Troubleshooting and support
Related concepts
Related tasks