topic Re: setting time im VMS in Operating System - OpenVMS

setting time im VMS

Vogra — Mon, 17 Oct 2005 05:45:05 GMT

Hi all,

how can I set time in vms 7.2-1?
exactly command please,
Lima.

Re: setting time im VMS

Volker Halle — Mon, 17 Oct 2005 05:49:16 GMT

Hi,

to set the time and date in OpenVMS, use the SET TIME command. See HELP SET TIME

$ SET TIME=17-OCT-2005:13:00:00

Volker.

Re: setting time im VMS

Daniel Fernandez Illan — Mon, 17 Oct 2005 09:34:29 GMT

Hi
you can also use:
SET TIME="17-oct-2005 16:33"
or
SET TIME=" + 01:00 "
to increase un hour the current time.
Saludos.
Daniel.

Re: setting time im VMS

Arch_Muthiah — Mon, 17 Oct 2005 13:37:42 GMT

Hi vogra,

DAYLIGHT saving!

$ @SYS$EXAMPLES:DAYLIGHT_SAVINGS.COM

Run this procedure to adjust the system time and TDF (time differential factor) automatically twice a year.

Archunan

Re: setting time im VMS

Mike Reznak — Tue, 18 Oct 2005 01:56:37 GMT

Hi,

command set time is not enabled, when UCX DTSS or TCPIP NTP service for time synchronization is running. Then you have use UTC$TIMEZONE_SETUP.COM or disable service for a while.

Mike

Re: setting time im VMS

Volker Halle — Tue, 18 Oct 2005 02:11:53 GMT

re: Mike,

you still can use SET TIME if TCPIP NTP is running, but you can't use this command when running DECnet-Plus DTSS.

If it's necessary to set the time while running DTSS, you need to temporarily disable DTSS with:

$ MC NCL DISABLE DTSS
$ MC NCL DELETE DTSS
$ SET TIME=...
$ @SYS$STARTUP:DTSS$STARTUP

Volker.

Re: setting time im VMS

Sebastian Bazley — Tue, 18 Oct 2005 07:04:26 GMT

[Just happened across the following today.]

If you want to adjust the time in a cluster, you can use the following command:

MCR SYSMAN
SYSMAN> SET ENVIRON/CLUSTER
SYSMAN> CONFIG SET TIME dd-MMM-yyyy hh:mm:ss
SYSMAN> EXIT

This will ensure all the nodes use the same time as far as possible.

Have a look a SYSMAN HELP CONF SET TIME

and particularly:

SYSMAN> HELP CONF SET TIME DESC
...
As a result of slight inaccuracies in each processor clock,
times on various members of a cluster tend to drift apart.
The following procedure synchronizes system times in a cluster
environment:

$ SYNCH_CLOCKS:
$ RUN SYS$SYSTEM:SYSMAN
SET ENVIRONMENT/CLUSTER
CONFIGURATION SET TIME
EXIT
$ WAIT 6:00:00
$ GOTO SYNCH_CLOCKS

The procedure sets the time on all cluster nodes to the value
obtained from the local time-of-year clock, waits 6 hours, then
resets the time for the cluster.

This won't work if DTSS is being used, but in that case there's no need to synch clocks anyway.

Re: setting time im VMS

Anton van Ruitenbeek — Mon, 31 Oct 2005 11:41:57 GMT

To keep the time in the cluster between the nodes aligned you can also setup NTP services on all the nodes, and let all the nodes look at eachother. Make sure that one (or better all) nodes have an external synch.
Modify TCPIP$NTP.CONF with the correct STRATUM for eacht node and if possible external nodes.
Startup NTP and check it with eq. ntpq -c peer

Problem we had this weekend, 4 node cluster, DAYLIGHT_SAVING was set to 1 as on alle the nodes. This system didn't modify the time during the switch this weekend. Other nodes, not cluster(members), using the same configuration (timezone rules, sysgen paras etc) did it correct this weekend. I'm not sure what cased this.
Unfortunaly we don't use DTSS anymore. (That was working fine, so don't use it :( ! )

AvR