TIME(Zone) setting on OVMS 7.3 Systems

[Leigh Ostrom]

My 2xnode OVMS 7.3x cluster did not make the time change to DST.

Although AUTO_DLIGHT_SAV = 1 one node timezone was at -18000; the other at -14400.
All other setting set via UTC$TIME_SETUP
Would this have cause my problem?

[Ian Miller.]

Are you up to date with the TDF and related patches and you do UTC$TIME_SETUP after installing the patch?

Is DTSS in use?

[Leigh Ostrom]

Thanks for your quick response..
Our patches are current. We've had this problem for a couple of time changes now.

We are not using DTSS. My current logicals are:
"SYS$LOCALTIME" = "SYS$SYSROOT:[SYS$ZONEINFO.SYSTEM.US]EASTERN."
"SYS$TIMEZONE_DAYLIGHT_SAVING" = "1"
"SYS$TIMEZONE_DIFFERENTIAL" = "-14400"
"SYS$TIMEZONE_NAME" = "EDT"
"SYS$TIMEZONE_RULE" = "EST5EDT4,M4.1.0/02,M10.5.0/02"

[Ian Miller.]

i have one cluster on EST and it has the same logicals that you have. However it has AUTO_DLIGHT_SAVE=0 and uses DTSS.

[Robert_Boyd]

Are you using DTSS on either/both nodes?

Are you running NTP clients on either/both nodes?

Is NET$DISABLE_DTSS defined on either/both?

The answers to these questions may reveal something about why you're having trouble.

Robert

[Leigh Ostrom]

Not running DTSS on either node
But are running NTP.
Net$DISABLE_DTSS is not defined on either node
AUTO_DLIGHT_SAV is set to 1. but the timezone_differential on the nodes was: (one at -18000, the other at -14400); Although this has been rectified to -14400

I used SYS$MANAGER:UTC$TIME_SETUP,US,EASTERN

[Volker Halle]

Leigh,

when the OpenVMS AUTO_DLIGHT_SAV mechanism changes the time, there will be an OPCOM message - check OPERATOR.LOG for:

%TDF-I-TDFSET, Summer time or standard time changeover - new SYS$TIMEZONE_DIFFERENTIAL=7200/old=3600.

(Example from system in MET time zone)

Also the JOB_CONTROL process should have a TQE (Timer Queue Element) set for the next switchover:

$ ANAL/SYS
SDA> SET PROC JOB_CONTROL
SDA> SHOW PROC/TQE

Volker.

[Robert_Boyd]

Based on the advice I was given, you will probably want to define NET$DISABLE_DTSS to 1 to encourage SYS$STARTUP:TDF$UTC_STARTUP.COM to do the right thing when it is invoked by VMS$BASEENVIRON-050_VMS.COM. This helps to make sure that the startup procedure knows that there is no DTSS running on the system.

[Leigh Ostrom]

Thanks to all, I've checked our other V7.3 systems and saw that Net$disable_dtss was defined.

The logical has been set and entered into sys$common:[sysmgr]sylogical

My first experience with "Forums" has been great..Thanks again to you all