Classification: Confidential I would check your PCEDEF. JES2 allows for up to 10 concurrent processes, and defaults to 1. Your very large output may have been monopolizing the only purge processor available.
I do not believe your checkpoint, per se, was the problem, however, As of z/OS 2.1 JES2 offers "auto-tuning" of the minhold, maxdorm and other parameters related to checkpoint processing in the MAS. I strongly suggest utilizing this function. Check the fine manuals for details. BTW, ISTR that there is no initparm for this. It can only be set via command(?). HTH, -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Mark Jacobs Sent: Tuesday, March 22, 2022 4:25 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: JES2 Purge Processing [CAUTION: This Email is from outside the Organization. Unless you trust the sender, Don't click links or open attachments as it may be a Phishing email, which can steal your Information and compromise your Computer.] Yesterday we had a job with a huge amount of output take about 48 minutes to complete purge processing. While it was being purged everything else on that system that required JES2 services, basically spool space, wasn't able to do so and was waiting for the purge to complete. This is a 3 system MAS, and I think it's safe to say that any JES2 tuning activities hasn't been done in a very long time. Does anyone have suggestions on what to look at in the system/JES2PARM configuration that might speed purge processing up if this problem occurs again? Mark Jacobs Sent from [ProtonMail](https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fprotonmail.com%2F&data=04%7C01%7Callan.staller%40HCL.COM%7C940b59fc6a9446de16ec08da0c4a884d%7C189de737c93a4f5a8b686f4ca9941912%7C0%7C0%7C637835811513743578%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=ylKI7xZvsZ61Y8he1LOLAodBtbHqOH%2F5pxElB%2FrXePE%3D&reserved=0), Swiss-based encrypted email. GPG Public Key - https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fapi.protonmail.ch%2Fpks%2Flookup%3Fop%3Dget%26search%3Dmarkjacobs%40protonmail.com&data=04%7C01%7Callan.staller%40HCL.COM%7C940b59fc6a9446de16ec08da0c4a884d%7C189de737c93a4f5a8b686f4ca9941912%7C0%7C0%7C637835811513743578%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=IFmAY8Ke2hU4C86BTzpw33gntTYJ6IjEwQ%2B67MN0SM4%3D&reserved=0 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ::DISCLAIMER:: ________________________________ The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. ________________________________ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
