day light saver time change

[dgizaw]

Hi every one,
Does any body know if there is any patch for day light saving time change? I have HP-UX 11i and HP-UX 11.


Thank you

[Keith Johnson]

To my knowledge, no. Just ensure your /etc/TIMEZONE file reflects the fact your location observers Daylight Savings Time.

KJ

[Pete Randall]

There is a patch to accomodate the U.S. change in start/end dates: PHCO_34668.


Pete

[James R. Ferguson · Accepted solution]

Hi:

Yes, there is a recently released patch for changes in the United States among other regions.

For 11.0 PHCO_34673
For 11.11 PHCO_34668
For 11.23 PHCO_34669

Regards!

...JRF...

[dgizaw]

I will download the patches suggested by Ferguson and patch my systems.

Thank you all.

[dgizaw]

When should I apply the patches? Is it any time before March 2007 or after the next (October) change?

Thanks

[A. Clay Stephenson]

Anytime you like will be fine. The only "gotcha" is that currently running processes such as the cron daemon will not have a clue that tztab has been changed. You could , of course, terminate and restart cron but there is no guarantee that you have fixed every critical process. Therefore the best approach is to install the patch and then schedule a maintenace window for a reboot. You can use the attached Perl script, dst.pl, to check your work. It uses the same underlying libc routines that the standard UNIX commands such as date use, so if the Perl script displays the correct time transitions then you are good to go BUT again, this does not indicate that currently running processes will be aware of the change.
Invoke as "dst.pl -u" for full usage.

[dgizaw]

Thank you Clay.

[IT Response]

For java check www.hp.com/go/java. There is a link off the main page in red. Also, before month end there may be a tool available, similar to sun and IBM's that will change Java TZ files without having to install a whole new Java version.
Also check:
8606420800 - YK changes in librwtool and in lib++.a
fix
Applications linked shared can just apply the aC++ Runtime patch.
If linked archive, the application must be relinked.

For librwtool the following patches exist:
[PHSS_33941/PACHRDME/English] 11.00
[PHSS_33942/PACHRDME/English] 11.11
[PHSS_34041/PACHRDME/English] 11.23

lib++.a is only fixed with the A.03.70 release.



8606430960 - DCE and Daylight Saving changes in U.S.


Fix Release : - 11.31
11.11 : - December 2006
11.23 : - December 2006
cheers,
Nick

[Qcheck]

Hi There,

I did apply the pacth PHCO_34669 on my HPUX server, do I need to reboot the server inorder to take effect???

Thanks in advance!

[Pete Randall]

While it is not necessary to re-boot, it is generally recommended so that long running, time dependant process (like cron and DB apps) will get restarted with the new changes.


Pete

P.S. It's also generally recommended that you start your own thread rather than adding a separate question to someone else's.

[Qcheck]

Thank you very much for the information Pete!