Unicenter CA-Scheduler Job Management for VSE Systems ...

1.1 Unicenter CA-Scheduler Monitor1.1 Unicenter CA-Scheduler MonitorThis subsystem runs as a subtask of POWER, or as a stand-alone in its ownpartition. It is a never-ending task that should be started up as part of yourIPL procedure and is event-driven and spends most of the time waiting for anevent to occur. It gets posted by various parts of the system to process thatevent and then waits again which reduces the overhead on your systemsignificantly when compared to fixed-interval-driven tasks.After initialization, and once every 24-hour period (at midnight or any timeyou specify on the AUTOTIM parameter of CAIJGEN generation optionmacro), the Unicenter CA-Scheduler Monitor does the following:1. Cancels any schedules or jobs defined with BACKLOG=NO if they are stillwaiting to be processed.2. Purges all completed and canceled schedules from the tracking file3. Deletes any messages older than the MSGHOLD limit.4. Scans the job Master database for schedules and jobs eligible to run thatday.5. Places them in an appropriate queue. (See the topic Online Monitoring inthe Unicenter CA-Scheduler User Guide.)6. Waits for any one of these:Job Start EventJob End EventOutput Data Set CloseUser CommandsTimer EventPosted by $JOBEXITPosted by $JOBACCTPosted by $$BCLOSEPosted by a Unicenter CA-Scheduler userPosted by the operating system through theSETIME macro1-2 Unicenter CA-Scheduler Systems Programmer Guide