z/OS MVS Programming: Sysplex Services Guide
Previous topic | Next topic | Contents | Contact z/OS | Library | PDF


Understanding How MVS Handles Restart Processing

z/OS MVS Programming: Sysplex Services Guide
SA23-1400-00

When an element unexpectedly fails, automatic restart management is given control during end-of-job and end-of-memory termination after all other recovery has taken place. If the element should be restarted, then MVS™:

  1. Gives control to the element-restart exit.
  2. Gives control to the event exit.
  3. Restarts the element.
  4. Issues an ENF signal when the element re-registers with the automatic restart manager.

When a system unexpectedly fails, automatic restart management determines if any elements were running on the system that failed. If those elements can be restarted on another system, and cross-system restarts are allowed, MVS does the following for each system on which the elements will be restarted:

  1. Gives control to the workload restart exit.
  2. For each element that will be restarted:
    1. Gives control to the element restart exit.
    2. Gives control to the event exit.
    3. Restarts the element.
    4. Issues an ENF signal when the element re-registers with the automatic restart manager.

Go to the previous page Go to the next page




Copyright IBM Corporation 1990, 2014