Rich - thanks - that is much better.
--------------------------------------------------------------------
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

Linux on 390 Port <[EMAIL PROTECTED]> wrote on 10/22/2002 10:37:41
AM:

> 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!
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