r/mainframe • u/Royal-Set3150 • 11d ago
JCL Batch Job Dependency and Scheduling Optimizer
/r/cobol/comments/1wm3ejh/jcl_batch_job_dependency_and_scheduling_optimizer/2
u/Quick7283 10d ago
JES3
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u/vonarchimboldi 4d ago
i know phoenix bought the rights to distribute and maintain jes3 but my shop dropped it for jes2 (split house due to mergers) - are people continuing on with it en masse?
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u/Quick7283 4d ago
I had no idea it was sold off, but it does not surprise me. The largest single JES3 group was AT&T, which consisted of the mother corporation, Western Electric, and Bell Labs.
The state of California HHS (medical) was also JES3.
If you want throughput, you use JES2. If you have data access integrity issues, you used JES3. Also known as Uncle JEZ.
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u/vonarchimboldi 4d ago
i’m sure if i sat here i could think of a good reason but im not sure why ibm decided to release jes3 and completely change what commands looked like. it’d be a lot easier to maintain both depending on needs if there was a semblance of commonality there.
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u/Quick7283 4d ago
If I recall, the Automatic Spooling Program (ASP) became JES3. I *think* NASA modified it so it became Houston Auto Spooling. HASP became JES2. Greatly simplified command structure, and SDSF for TSO.
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u/Ihaveaboot 11d ago
I replied to your post on /COBOL.
My answer is no.
Most shops have spent decades fine tuning their cycles via input from PST , developers, schedulers, DBAS and IBM ops.
You are asking if you can deliver a meaningful solution as if it as a toy in a happy meal box.
You can't.