> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Jim Blalock > Sent: Wednesday, June 15, 2005 1:39 PM > To: [email protected] > Subject: Sync A z/OS Clock To An SNTP Time Server? > > > Hi folks, > > I have been asked to look into some sort of automated way to > sync a z/OS > clock from Internet time servers. Syncing either local time > (offset) or > the TOD clock (GMT) will be adequate. We are z/OS 1.4, > single image, no > sysplex timer. > > I spent some time looking into the SNTPD daemon that came out > with z/OS > 1.4. SNTPD only supports being a stratum 1 server (where > stratum 0 is a > time reference like an atomic clock or a sysplex timer). > Nowhere does the > (scant) doc say that SNTPD syncs the z/OS clock: it sounds like IBM > assumes you have a big studly 'plex and the sysplex timer > support takes > care of your clock for you. So, this version of SNTPD looks > like a dead end. > > If I were asked to write one of these, I know how I'd try to > do it; it > should be easy. There are tons of little freebie time > syncers available > for Windows; surely there's something for big computers too? > > -- Jim Blalock > z/OS Support, Clemson University > (864) 656-3680 > [EMAIL PROTECTED]
If doing a periodic "T CLOCK=hh.mm.ss" is sufficient, then I'd cheat. I'd have a PC which is running a TN3270E emulator. This emulator would connect to z/OS as a console (Visara, 2074, ICC, or SMCS console). Have this PC sync its clock via the Internet. Have this PC run a script periodically which issues the "T CLOCK=hh.mm.ss". If you don't want a PC with a console, use a PC that somehow does the same thing. But you will need a PC somehow telling something on z/OS to issue the above command. There is __no__ way to update the TOD clock other than via an ETR. -- John McKown Senior Systems Programmer UICI Insurance Center Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its' content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. ---------------------------------------------------------------------- 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
