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Conference lassie::ucx

Title:DEC TCP/IP Services for OpenVMS
Notice:Note 2-SSB Kits, 3-FT Kits, 4-Patch Info, 7-QAR System
Moderator:ucxaxp.ucx.lkg.dec.com::TIBBERT
Created:Thu Nov 17 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:5568
Total number of notes:21492

5234.0. "NTP adn Daylight Saving Time" by AEOENG::ANTHOINE_J () Mon Feb 17 1997 08:55

Hi,

	A customer in france is using NTP on Digital-UNIX servers and OpenVMS
	server. The goal is to synchronize all the computers at the same time.


     1_ The customer asked me what's happen is case of time change ( season 	
	Daylight Saving Time ). I try to simulate the DST and I could note
	that NTP on DIGITAL-UNIX is able to manage the DST ( see the Timezone
	parameters ) but it seems to me UCX-NTP do not change automaticaly 
	the time-clock value when the DST date occurs. I define the DST
	with the following command :
	UCX> set conf time "MET-1MET_DST-2,M3.5.0/2,M10.5.0/2".

	Is there a method to authorize the Daylight Savin Time with UCX ?

      2_ Have you any idea of the time_clock value change back effect in case 
	of the autumn DST ? I do not know exactly what happens when the 	
	time_clock.is returned back for 1 hour.


	Thanks,

	Jacques
T.RTitleUserPersonal
Name		DateLines
5234.1BSS::G_MCINTOSHTouch Not the Cat, Bot the GloveMon Feb 17 1997 10:004
    
    I had customer who asked me the same thing.
5234.2Two options to adjust the time...twick.nio.dec.com::PETTENGILLmulpMon Feb 24 1997 21:369
The first option is to use/modify the batch procedure
        sys$examples:DAYLIGHT_SAVINGS.COM

The second option is to use DECnet-PLUS and DECdts.

(I'd love to come up with a new time server for VMS that would replace
all the servers, but real work, and lately, IMAP4 investigations have
gotten in the way.)
5234.3Thanks a lotAEOENG::ANTHOINE_JTue Mar 04 1997 10:307
Thanks a lot for your suggestions. I test the first one and it is workimg. The
customer will accept it tomorrow. The second solution is not accepted by the
customer.

Best regards,

	Jacques
5234.4UCX SHOW CONFIG TIME = n/a ?SANITY::PCUMMINGSThe perfect democracyTue May 13 1997 13:5629
    Interesting. Hadn't heard of the sys$examples:DAYLIGHT_SAVINGS.COM
    procedure before.  We had been using the procedure it calls (as I can
    see after reviewing the procedure)
    @SYS$MANAGER:UTC$CONFIGURE_TDF.COM SET _tdf_value_  _set_new_time_to
    in SYSMAN SET ENV/CLUSTER.
    
    One other thing, I just noticed after seeing people make reference to
    UCX SHOW CONFIG TIME was that it's value appears to be non-effective
    on our systems.  UTC$CONFIGURE_TDF.COM writes to either SYS$SYSTEM:
    SYS$TIMEZONE.DAT or in some cases like pre-V7 Alpha SYS$LOADABLE_IMAGES:
    SYS$BASE_IMAGE.EXE.  I'm just realizing that the SHOW CONFIG TIME is
    there, but what significance does it bring?
    
    UCX SHOW CONFIG TIME
    TIME configuration
     
    Value:        EST5EDT4,M4.1.0,M10.5.0
    Differential: -5
    
    SHO LOG SYS$TIMEZONE_DIFFERENTIAL
    "SYS$TIMEZONE_DIFFERENTIAL" = "-14400" (LNM$SYSTEM_TABLE)
    
    All of the systems I have appear this way. i.e., the -14400 (or -4
    hours) is what's used.  Looks like info stored in the UCX CONFIG
    database is not used.
    
    Comments anyone?
    /Paul