Patches for daylight savings time changes? - Aix

This is a discussion on Patches for daylight savings time changes? - Aix ; Notice from Oracle: > On August 8, 2005, President George W. Bush signed the > Energy Policy Act of 2005. This Act changed the time change > dates for Daylight Saving Time in the U.S. Beginning in 2007, > DST ...

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Thread: Patches for daylight savings time changes?

  1. Patches for daylight savings time changes?

    Notice from Oracle:

    > On August 8, 2005, President George W. Bush signed the
    > Energy Policy Act of 2005. This Act changed the time change
    > dates for Daylight Saving Time in the U.S. Beginning in 2007,
    > DST will begin on the second Sunday in March and end the
    > first Sunday in November. The Secretary of Energy will report
    > the impact of this change to Congress. Congress retains the
    > right to resume the 2005 Daylight Saving Time schedule once
    > the Department of Energy study is complete.

    ....
    > Operating System

    ....
    > UNIX, Linux and Mac OS use the zoneinfo utility which allows
    > a single time zone to have multiple daylight saving time rules
    > to handle changes from year to year. The zoneinfo database
    > is a collaborative compilation of information about the world's
    > time zones. New editions of the database are published as
    > changes warrant ...


    Folks,

    So far I've only looked at this on Solaris but I have several client
    networks that run AIX 5 and 4. The Solaris comments said
    that some parts of Australia also recently had a DST change so
    this isn't only a US issue.

    Does anyone have a patch that doesn't require a reboot or
    discussion of the impact of having the kernel think the GMT
    offset is different than a newer running image thinks?

    I have been asking for scheduled reboots before this goes into
    effect and I have gotten some okays, but I figure at least some of
    the producton boxes I support won't be rebootable until after the
    change should have happened. Warping the clock an hour is a
    big deal for databases when it's backwards but Oracle doesn't
    care if its forward and lots of applications don't care either way.


  2. Re: Patches for daylight savings time changes?


    Doug Freyburger wrote:
    > Notice from Oracle:
    >
    > > On August 8, 2005, President George W. Bush signed the
    > > Energy Policy Act of 2005. This Act changed the time change
    > > dates for Daylight Saving Time in the U.S. Beginning in 2007,
    > > DST will begin on the second Sunday in March and end the
    > > first Sunday in November. The Secretary of Energy will report
    > > the impact of this change to Congress. Congress retains the
    > > right to resume the 2005 Daylight Saving Time schedule once
    > > the Department of Energy study is complete.

    > ...
    > > Operating System

    > ...
    > > UNIX, Linux and Mac OS use the zoneinfo utility which allows
    > > a single time zone to have multiple daylight saving time rules
    > > to handle changes from year to year. The zoneinfo database
    > > is a collaborative compilation of information about the world's
    > > time zones. New editions of the database are published as
    > > changes warrant ...

    >
    > Folks,
    >
    > So far I've only looked at this on Solaris but I have several client
    > networks that run AIX 5 and 4. The Solaris comments said
    > that some parts of Australia also recently had a DST change so
    > this isn't only a US issue.
    >
    > Does anyone have a patch that doesn't require a reboot or
    > discussion of the impact of having the kernel think the GMT
    > offset is different than a newer running image thinks?
    >
    > I have been asking for scheduled reboots before this goes into
    > effect and I have gotten some okays, but I figure at least some of
    > the producton boxes I support won't be rebootable until after the
    > change should have happened. Warping the clock an hour is a
    > big deal for databases when it's backwards but Oracle doesn't
    > care if its forward and lots of applications don't care either way.





    You can also update the timezone info by using chtz command. But that
    required a reboot too.


  3. Re: Patches for daylight savings time changes?


    Doug Freyburger wrote:
    > Notice from Oracle:
    >
    > > On August 8, 2005, President George W. Bush signed the
    > > Energy Policy Act of 2005. This Act changed the time change
    > > dates for Daylight Saving Time in the U.S. Beginning in 2007,
    > > DST will begin on the second Sunday in March and end the
    > > first Sunday in November. The Secretary of Energy will report
    > > the impact of this change to Congress. Congress retains the
    > > right to resume the 2005 Daylight Saving Time schedule once
    > > the Department of Energy study is complete.

    > ...
    > > Operating System

    > ...
    > > UNIX, Linux and Mac OS use the zoneinfo utility which allows
    > > a single time zone to have multiple daylight saving time rules
    > > to handle changes from year to year. The zoneinfo database
    > > is a collaborative compilation of information about the world's
    > > time zones. New editions of the database are published as
    > > changes warrant ...

    >
    > Folks,
    >
    > So far I've only looked at this on Solaris but I have several client
    > networks that run AIX 5 and 4. The Solaris comments said
    > that some parts of Australia also recently had a DST change so
    > this isn't only a US issue.
    >
    > Does anyone have a patch that doesn't require a reboot or
    > discussion of the impact of having the kernel think the GMT
    > offset is different than a newer running image thinks?
    >
    > I have been asking for scheduled reboots before this goes into
    > effect and I have gotten some okays, but I figure at least some of
    > the producton boxes I support won't be rebootable until after the
    > change should have happened. Warping the clock an hour is a
    > big deal for databases when it's backwards but Oracle doesn't
    > care if its forward and lots of applications don't care either way.



    You can also update the timezone info by using the chtz command. But
    that requires a reboot too.


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