The retry mechanism for operation waiting for SE

To monitor the availability of the scheduling environments, the trackers activate an ENF listener mechanism for event code 57 (the event that reports the status change of a scheduling environment) and for event code 41 (the event that reports on WLM policy activation) according to the value stored in the OPCOPTS SECHECK parameter.

When a scheduling environment becomes again available on a specific image, the tracker generates a new event to report this to the controller. Consequently, the controller resets the extended status of the operation so that it is again eligible for submission.

When a Policy Activation occurs, all the operations waiting for Scheduling Environment belonging to the Sysplex where the Policy change occurred, are resubmitted.