ABEND40D, ABEND0F9, ... are what you can get running REGION=0M without any intervention by IEFUSI so your systems programmers are right. This has been discussed at length before search terms REGION and IEFUSI will get you tons of hits in the archives. We use an IEFUSI I updated from one Mike Loos wrote.
http://www.cbttape.org/ftp/cbt/CBT425.zip Mine has less code than Mike's did so if you want to secure REGION=0M then his might be a better starting place. I just have two modes of operation REGION=0M gets you maximum that you can get safely with a buffer reserved above and below otherwise set maximum less buffer below and a 1G default above. It will be here file 518 later today probably http://www.cbttape.org/updates.htm Mike Loos gave an excellent presentation on IEFUSI at SHARE a few years back. Search the archives using REGION=0M or IEFUSI as a keyword and you will locate numerous discussions of virtual storage management. Visit the SHARE web site http://www.share.org/ for Mike's foils From SHARE in Boston - July, 2000. http://shareweb.share.org/proceedings/sh95/share00s.htm 2891 - Use of the IEFUSI Exit to Limit (or not) Region Size http://shareweb.share.org/proceedings/sh95/data/S2891A.PDF http://shareweb.share.org/proceedings/sh95/data/S2891B.PDF http://www.cbttape.org/ftp/cbt/CBT425.zip also of interest is Chris Craddock's foils from this Virtual Storage session last seen in NYC I believe 2829 - z/OS Virtual Storage Mystery Tour http://ew.share.org/client_files/callpapers/attach/SHARE_in_New_York/S28 29.pdf Best Regards, Sam Knutson, GEICO Performance and Availability Management mailto:[EMAIL PROTECTED] (office) 301.986.3574 "Think big, act bold, start simple, grow fast..." -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Chris Hoelscher Sent: Wednesday, April 12, 2006 8:47 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Region size for batch processing our sysprogs discourage (prevent?) 0M on the belief (fact?) that if such a job were to run-away and consume all available memoryon its way to ebending, there would be no room to set up abend-related control blocks in memory when it did abend - thus we are constrained to use 2047M Chris Hoelscher IDMS & DB2 Database Administrator Humana Inc 502-710-3038 [EMAIL PROTECTED] ==================== This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient, please destroy all paper and electronic copies of the original message. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
