As the OP, I'm quite satisfied with the jump-ahead explanation. Contrary to my original post, we do not specify a time on the command in question, only an interval. So it's understandable what happened.
-- Before the most recent IPL, the command was issued every hour (I=3600) at +23 minutes -- Immediately after the IPL, the command was issued at +45 minutes -- Since the DST time change, the command has been issued at +1 minute At IPL, when JES2 starts, auto commands are executed immediately. That starts the 1 hour timer 'randomly' depending on when JES2 comes up. Each IPL will result (most likely) in a new anchor time. But when DST hits all LPARs simultaneously, all active intervals of one hour or less suddenly expire. Since time change occurs at the top of the hour, all such intervals now anchor there. The apparent effect is to synchronize auto commands with each other across all LPARs. It's now understandable but not previously expected nor immediately explicable. . . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Elardus Engelbrecht Sent: Tuesday, March 10, 2015 11:40 PM To: [email protected] Subject: Re: Time change effect on JES2 AUTO commands Lucas Rosalen wrote: >Mike is right. >At 2:01 you've "added" 3600s (to make it 3:01), so JES2 tried to catch up as >the interval had already been more than satisfied. Indeed and this is documented, <quote> If, at 1:15 a.m., the clock is set ahead two hours, making the current time 3:15 a.m., the command will be issued immediately, at 3:15 a.m., and will be issued again at the next interval (two hours beyond 3:15 a.m.), which is 5:15 a.m. <end quote> But does not 100% describe the OP's problem. I'm also puzzled by this. I believe we all missed something obvious. What we're doing is, we let the automation software issues several $T commands (with T= and I= keywords) on the hour (whatever) or about 5 minutes after hour and then we let JES2 go on. Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
