Thanks for the link. I see what you mean by "complex". From the reading I just did it would appear that we must be using more than one converter and the conversions happen at different rates, so first converted, first executed. None of the other factors in that link apply to the cases I have observed.
As another poster said, effectively random from the submitter's POV. Peter -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of ITschak Mugzach Sent: Tuesday, April 14, 2020 4:34 PM To: [email protected] Subject: Re: Order of execution for nearly-identical batch jobs with the same name Complex answer. See this link (for 2.2): https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.hasa300/has2v5_Job_selection_and_execution.htm ITschak Mugzach *|** IronSphere Platform* *|* *Information Security Continuous Monitoring for z/OS, x/Linux & IBM I **| z/VM comming son * On Tue, Apr 14, 2020 at 11:00 PM Farley, Peter x23353 < [email protected]> wrote: > I have been confused by this behavior in z/OS for a long time now. > Can anyone explain to me how JES2 selects which job will be executed > next from a set of identically-named jobs at the same priority level > in the same job class? > > Recently observed behavior has been all over the map. E.G., today I > submitted four jobs from TSO all with the same job name. Each was > assigned a sequential job number, like this: > > TSOUSERM 1001 > TSOUSERM 1002 > TSOUSERM 1003 > TSOUSERM 1004 > > Observed execution order was: > > TSOUSERM 1004 > TSOUSERM 1002 > TSOUSERM 1003 > TSOUSERM 1001 > > On a different day I saw that the order executed was third, second, > fourth, first. > > These jobs execute the same number of PROC's and programs in the same > order just using a different initial input file name. They are > identical in every way except for the input file name. > > Why are these jobs not executed in the order submitted? That I guess > is what I really don't understand. Fortunately I don't *need* them to > execute in a particular order, I just don't understand why they do NOT > execute in submission order. > > TIA for curing my ignorance. > > Peter -- This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
