It's mildly refreshing to have this discussion without the specter a time change event looming before us. I had not heard of a cheating mechanism. Sounds like the old airline magazine syndrome. Years ago we used to IPL at time change, at least for the Fall-Back event. Over the years we made progress on several fronts.
o Switched to running true UTC with local offset (formerly set GMT to local) o Upgraded middleware like DB2 and CICS to current versions o Upgraded automation packages like TWS and System Automation to current versions o Moved over many years from manual SET CLOCK to external timers to STP I'm happy to announce that in the most recent time change, we mainframe folk did nothing at all. STP changed the local time offset as programmed. DB2 and CICS were already logging in UTC. TWS and SA somehow survived the live-again hour unscathed. Even CICS at V5 no longer requires a transaction to reread the system clock, an action we had taken for several years. I'm not aware of any application accommodations for this momentous non-event. I suppose that clients had become used to the local time stamp conundrum. (I remember some consternation when we made the local-to-UTC switch; we got through it.) So the question I would pose, why do customers still fear time change? I understand how it affects chickens and cows, but we are men and machines. Get over it. P.S. Our SAP runs on UNIX. For whatever reason, our SAP was shut down for an hours-long interval that conveniently included the time change event. Chickens, cows, and SAP. The last holdouts. . . . 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 Peter Hunkeler Sent: Friday, November 28, 2014 10:49 AM To: [email protected] Subject: AW: Re: Software to help switching from daylight saving time to standard time Norbert, Many thanks for link to the SAP offering (I intentionally didn't write "solution"). Very interesting. But not applicable to z/OS -- Peter Hunkeler ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
