Making initial checks on z/OS

Before you start problem determination in detail on z/OS®, consider whether there is an obvious cause of the problem, or an area of investigation that is likely to give useful results. This approach to diagnosis can often save a lot of work by highlighting a simple error, or by narrowing down the range of possibilities.

About this task

The cause of your problem could be in:

• IBM MQ
• The network
• The application
• Other applications that we have configured to work with IBM MQ

Some initial questions to consider are listed in the subtopics. As you go through the list of questions, make a note of anything that might be relevant to the problem. Even if your observations do not suggest a cause straight away, they might be useful later if we have to carry out a systematic problem determination exercise.