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тАО03-18-2010 06:29 AM
тАО03-18-2010 06:29 AM
DTSS and AUTO_DLIGHT_SAV
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тАО03-18-2010 06:48 AM
тАО03-18-2010 06:48 AM
Re: DTSS and AUTO_DLIGHT_SAV
http://h71000.www7.hp.com/doc/82final/dcps/dcps025_release_notes.pdf
specifically reference this sort of thing, including a list of the prerequisite patches.
Easy answer? Upgrade DCPS to something more current. Apply the patches.
Starting with DCPS 2.0, the DCPS license is part of the base OpenVMS licenses, so there's generally little reason to run an old DCPS version.
And yes, do load a more current patch for DECnet OSI, if you're using that product.
As for the underpinnings, OpenVMS itself implements the DTS switch-over, and not DECnet-Plus. Well, technically the DECnet-Plus stuff here was moved into base OpenVMS at V7.3.
My general recommendation around this stuff is simple: set the system time to and use UTC, and disable daylight time. OpenVMS does not implement timezones the way that any of us would like and moving OpenVMS over to a better implementation (and not the current localtime stuff) would be both a massive undertaking and a massive application upheaval. OpenVMS has been having issues with this switch-over for over thirty years. Give up. Switch to UTC. Ignore daylight time. Be done with it.
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тАО03-18-2010 06:58 AM
тАО03-18-2010 06:58 AM
Re: DTSS and AUTO_DLIGHT_SAV
the symptom described in the DCPS V2.5 release notes is: DCPS$SMB.EXE looping after DST change. Did that happen ?
Please consider that this problem may also be related to the old version of DCPS V2.3 and/or a combination of patch levels.
Why would you assume, that a DECnet-OSI ECO would cause DCPS V2.3 to 'not work' ?
If you consider to use AUTO_DLIGHT_SAV=1, you would want to either turn off DTSS Automatic TDF Change or completely turn off DTSS and switch to time synchronization with NTP.
Volker.
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тАО03-18-2010 07:13 AM
тАО03-18-2010 07:13 AM
Re: DTSS and AUTO_DLIGHT_SAV
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тАО03-18-2010 07:20 AM
тАО03-18-2010 07:20 AM
Re: DTSS and AUTO_DLIGHT_SAV
Classic balancing act
Purely Personal Opinion
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тАО03-18-2010 07:33 AM
тАО03-18-2010 07:33 AM
Re: DTSS and AUTO_DLIGHT_SAV
DCPS V2.3 was released in DEC-2003.
OpenVMS V7.3-2 was also released in DEC-2003, so DCPS V2.3 didn't even know about V7.3-2.
DECnet-OSI V7.3-2 ECO 1 was released in OCT-2004, so DCPS V2.5 (released NOV-2005) could know about it and the VMS732_TDF-V0200 patch released JUN-2004.
There have been other TDF patches this then:
VMS732_TDF-V0300 also solved a looping problem in PTHREADed programs after a MCR TDF$SET_TIMEZONE MODIFY after a manual time change.
So your best bet would be to install DECnet-OSI V7.3-2 ECO 1 and hope that the DCPS V2.5 release notes are right.
If you want to be really conservative, stay with what you have and write some procedure to stop and restart the DCPS queues after the DST change.
Volker.
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тАО03-18-2010 11:16 AM
тАО03-18-2010 11:16 AM
Re: DTSS and AUTO_DLIGHT_SAV
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тАО03-18-2010 11:59 AM
тАО03-18-2010 11:59 AM