Don't want to start a War between the 2 versions, but I'm curious as to why you believe JES3 to be superior to JES2 ?? Is this from a Systems perspective ?? Maybe JES3 does far many things that JES2 doesn't IDK. But for me, I'm not a System guy, I'm a technical guy that has worked with many applications for vendors. Almost all sites I have worked on used JES2 (and I'm very comfortable with it). But 1 site had JES3...when you develop a Credit Card application for a large Bank on JES2...it had about 3200+ jobs to run daily. Putting those jobs on JES3 was a total disaster. At the time, JES3 required all datasets to exist or the job would JCL Error. Even jobs with a couple input files, creating an output file...it would require output to be there. To fix this, it required us to split many jobs in half, some even more...the run total got to be somewhere around 6500+ jobs in total. But we had to build dataset create jobs that were parm cards to a utility to create the files, because if JES3 scanned the JCL and couldn't find it...boom JCL ERROR.
So, I was scarred because "I" saw this restriction as pretty stupid...and never saw the point. To me JES2 is and was exactly what I believe it was designed for a tool to support and run applications very efficiently, whereas I felt that JES3 was getting in the way of normal application jobs. Seemed like we were constantly trying to please JES3 in some way...so I hope and pray this "standard" wont make it to JES2. Thanks, Tom Savor -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Seymour J Metz Sent: Wednesday, February 27, 2019 4:50 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: z/OS V2R5 Will be the Last Release to Include JES3 I would consider JES3 superior to JES2, but such questions rarely have a consensus answer. Is TSO really considered by all to be better than CMS? Is REXX really considered by all to be better than Perl? Is P/I really considered by all to be superior to C? I couldn't even get consensus on C versus C++, and they are at least similar. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Savor, Thomas (Alpharetta) <thomas.sa...@fiserv.com> Sent: Wednesday, February 27, 2019 11:18 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: z/OS V2R5 Will be the Last Release to Include JES3 >That means a) IBM has until September 2023 to fully bring JES2 up to >JES3 standard Is JES3 really considered by all to be better than JES2 ?? I know it was 20 years ago, but JES3 gave me nightmares, whereas JES2 never has. >From an application point of view. Thanks, Tom Savor ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
