Randy Dray wrote:
"I was reading in the vm manual and it refers to a
command
SET VTOD TIME HH:MM:SS
I was hoping that someone could tell me that If i
issued this at the console I could adjust the time "on
the fly" and It wouldnt have any problems."
Sorry, no - that command is for use with VM's virtual coupling facility.
It transmits the same time to all guests connected to a coupling facility
virtual machine (causing an interrupt that requires a re-IPL, IIRC).
Regards,
Bill Stephens
Sr. Technology Analyst, High Availability
SunGard Availability Services
10th floor
401 North Broad Street
Philadelphia, PA 19108
Phone: (215) 351-1099
Fax: (215) 451-2045
[EMAIL PROTECTED]
Randy Dray
<[EMAIL PROTECTED]
om> To
Sent by: VM/ESA [email protected]
and z/VM cc
Discussions
<[EMAIL PROTECTED] Subject
.UARK.EDU> Re: Reset Time Command
11/03/2005 09:06
AM
Please respond to
VM/ESA and z/VM
Discussions
<[EMAIL PROTECTED]
.UARK.EDU>
Thanks alot for responding.
I will confess, I made the Change to tod and I set it
wrong. I am [if you didnt already know] am really
green to z/vm and sysprog stuff in general. A little
background, I was a cobol programmer and was asked to
back up the sysprog, just incase something happened to
him they might have someone to place a call to service
or something. Well our Sysprog is now gone and they
offered me the job, I took it and I openly admit,
admit I am way over my head. I am a fast learner and
Love a good challange. I plan on fighting this till
they make me stop. This list has been a great source
of info and I thank all for the help.
Back to my question,
I set the clock wrong, having never done it before I
shut down all my VSE's [that are guests] and issued a
shutdown on the vm console. I then proceeded to my
HMC and issued a LOAD. at the load prompt from the vm
console it asked me if I wanted to change the tod. I
said yes and aswered the messages. after i put in the
date and time I waited and waited .....
I then realiezed that I needed to enable tod from the
hmc. I then proceeded to the HMC and Enabled the TOD.
The console then asked me again if I wanted to change
the tod. this time it was correct so I replied no.
But, 6 min had passed since the start of all this and
now my time is off.
I was reading in the vm manual and it refers to a
command
SET VTOD TIME HH:MM:SS
I was hoping that someone could tell me that If i
issued this at the console I could adjust the time "on
the fly" and It wouldnt have any problems.
Thanks again,
--- Mike Walter <[EMAIL PROTECTED]> wrote:
> Hmmm... how did it get that far off? Some Operator
> with a self-wind
> wristwatch (implying that lack of motion by the
> operator slowed the
> watch). :-)
>
> We used to have PROFS users complaining that their
> PROFS Reminders were
> popping late, making them late for meetings. That
> was back on a 3083 or
> so, when the TOD clock drifted a couple minutes
> every week. We sent
> little 1.5" round LCD clocks to stick on the edge of
> their 3270s (it was
> "a while" ago).
>
> One thing you can do is change the time on the HMC,
> and then the next time
> VM is IPLed it should pick up the new time. That's
> good to do regardless.
>
> Before doing the following, ask yourself how
> important the current time is
> on that VM system...
> and then ask yourself how much you trust the time
> source that shows you to
> be 6 minutes off.
> Shortwave radio station WWV is a pretty accurate
> source. :-)
>
> From a Class A user issue
> CP DEFINE TIMEZONE CST WEST 05.54.00
> that will set CST to be 6 minutes sooner that the
> TOD clock shows,
> adjusting the epoch offset to give you your right
> time.
> CP SET TIMEZONE CST
> that will cause every virtual to receive an
> interrupt and message:
> hh:mm:ss HCPTZN6759I The time zone has changed to
> CST.
> How each virtual machine handles the interrupt is
> something you'll have to
> learn from others on the list. There has been
> recent discussion of VSE
> interrupt handling just this week.
> The next time you IPL VM, the normal SYSTEM CONFIG
> timezone_definition
> should return you to "CST WEST 06.00.00", and pick
> up the HMC TOD change.
>
> Mike Walter
> Hewitt Associates
> The opinions expressed herein are mine alone, not my
> employer's.
>
>
>
> "Randy Dray" <[EMAIL PROTECTED]>
>
> Sent by: "VM/ESA and z/VM Discussions"
> <[email protected]>
> 11/02/2005 04:22 PM
> Please respond to
> "VM/ESA and z/VM Discussions"
> <[email protected]>
>
>
>
> To
> [email protected]
> cc
>
> Subject
> Reset Time Command
>
>
>
>
>
>
> How about a command to adjust the tod clock.
>
> I did a q time and
>
> VM USER ID: VSE272
>
>
> * cp q Time
> AR 0015 TIME IS 16:13:28 CST WEDNESDAY 11/02/05
>
> its really 16:19:30
>
> My time is 6 min slow.
>
> is thier a set command that would allow me to adjust
> this????
>
>
> Thanks
>
>
>
> Randy Dray
> Systems Programmer
> Morton Buildings Inc.
>
> Morton IL
>
> (309) 263-6397
>
>
>
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Randy Dray
Systems Programmer
Morton Buildings Inc.
Morton IL
(309) 263-6397
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