Can you reproduce the problem?

If we can reproduce the problem, consider the conditions under which you do so:

• Is it caused by a command?

  Does the operation work if it is entered by another method? If the command works if it is entered on the command line, but not otherwise, check that the command server has not stopped, and that the queue definition of the

  SYSTEM.ADMIN.COMMAND.QUEUE has not been changed.

• Is it caused by a program? If so, does it fail in batch? Does it fail on all WebSphere MQ for iSeries systems, or only on some?

• Can you identify any application that always seems to be running in the system when the problem occurs? If so, examine the application to see if it is in error.

• Does the problem occur with any queue manager, or when connected to one specific queue manager?

• Does the problem occur with the same type of object on any queue manager, or only one particular object? What happens after this object has been cleared or redefined?

• Is the problem independent of any message persistence settings?

• Does the problem occur only when syncpoints are used?

• Does the problem occur only when one or more queue-manager events are enabled?