z/OS DFSMShsm Implementation and Customization Guide
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Reasons why automatic dump can appear not to be running

z/OS DFSMShsm Implementation and Customization Guide
SC23-6869-01

If an automatic function does not start when you think it should, there are many conditions that can be the cause. They include but are not limited to the following:
  • The function is held or DFSMShsm is in EMERGENCY mode.
  • Today is a "N" day in the automatic processing cycle.
  • The function is already running.
  • The function appears to have already run today. This means that the window is defined in a way such that the present time is a new day in the automatic processing cycle. For automatic primary space management and automatic dump, the planned start time must be later than the last actual completion time.
  • The operator’s permission reply is outstanding.

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