As Alan mentioned, Linux will account for the time change automagically. z/VM has a slightly different approach. It keeps track of time zones in the SYSTEM CONFIG file. Although it doesn't automatically adjust the time at the desired instant, it will adjust the time at IPL time based on the table of dates, times and offsets in the SYSTEM CONFIG file. This process covers you at IPL time.
Now does that mean you need to IPL in order to change the time? Absolutely not. For several years now, VM has provided a means to change the timezone on the fly. SET TIMEZONE xxx, will adjust VMs timezone and offset based on the zone parameter that you provide. So, Lionel, if you issue SET TIMEZONE PST, you will see the timestamp move back one hour. Consequently next spring if you issue the command SET TIMEZONE PDT, you will see the timestamp move forward one hour. This whole process works best if your hardware clock is set to UTC to begin with and the timezone parameters in the SYSTEM CONFIG weren't messed with (except to indicate your current timezone). As mentioned previously some software does not take too kindly to this change, but I've never seen that CMS itself really cares. On Tuesday 22 October 2002 11:28 am, you wrote: > Will linux and z/vm automatically adjust the time or does it have to be > done manually this weekend? > > -------------------------------------------------------------------- > Lionel B. Dyck, Systems Software Lead > Kaiser Permanente Information Technology > 25 N. Via Monte Ave > Walnut Creek, Ca 94598 > > Phone: (925) 926-5332 (tie line 8/473-5332) > E-Mail: [EMAIL PROTECTED] > Sametime: (use Lotus Notes address) > AIM: lbdyck -- Rich Smrcina Sytek Services, Inc. Milwaukee, WI [EMAIL PROTECTED] [EMAIL PROTECTED] Catch the WAVV! Stay for Requirements and the Free for All! Update your S/390 skills in 4 days for a very reasonable price. WAVV 2003 in Winston-Salem, NC. April 25-29, 2003 For details see http://www.wavv.org
