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тАО02-06-2007 08:01 AM
тАО02-06-2007 08:01 AM
Is it possible to set the date forward for testing then set it back to the current date without problems?
Solved! Go to Solution.
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тАО02-06-2007 08:05 AM
тАО02-06-2007 08:05 AM
SolutionGoing back is a different story.
Depending on the applications, i.e. those that might have logic for checking validity of transactions, it is safest to stop the applications before moving time backward. Even better, reboot server to move back.
Just like Y2K testing, deja vu.
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тАО02-06-2007 08:28 AM
тАО02-06-2007 08:28 AM
Re: DST Roll-Forward date testing
Sure you can set the date to any day but the database may have some big issues.
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тАО02-06-2007 08:51 AM
тАО02-06-2007 08:51 AM
Re: DST Roll-Forward date testing
TZ=CST6CDT dst.pl -y 2007
TZ=EST5EDT dst.pl
Invoke as "dst.pl -u" for full usage.
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тАО02-06-2007 09:13 AM
тАО02-06-2007 09:13 AM
Re: DST Roll-Forward date testing
My main concern is that the HP-UX operating system is stable after the date is set back. I have concerns that it would not be, but I am looking for someone more experienced that could confirm or dispute that.
Clay, thanks for the script.
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тАО02-06-2007 04:07 PM
тАО02-06-2007 04:07 PM
Re: DST Roll-Forward date testing
You are reading far too much into the impact of the patch. HP-UX knows nothing about timezones and daylight saving changes. HP-UX keeps only one time: UTC (aka, GMT) and it never changes froward or backward. Instead, each process inherits a timezone variable called TZ and this allows the classic Unix library time routines to adjust the time value automatically. You have more than two dozen timezones and daylight saving rules in effect at the same time on your system. Every year, politicians in various countries change things around and all that is needed for HP-UX is a modified tztab file. You can eve create your own personal timezone with your own rules for daylight saving.
Now that said, depending on the version of HP-UX you are running, you will want to reboot so that stored values can be refreshed. Java is a completely different story as it ignores the OS and invents it's own timekeeping. For more comprehensive details, see:
http://www.hp.com/go/dst
Bill Hassell, sysadmin
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тАО02-04-2008 03:03 PM
тАО02-04-2008 03:03 PM
Re: DST Roll-Forward date testing
See:
http://h21007.www2.hp.com/portal/site/dspp/PAGE.template/page.catalog_product_detail?productId=65&jumpid=reg_R1002_USEN
or:
http://www.solution-soft.com/timemachine.shtml
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тАО05-29-2009 08:13 AM
тАО05-29-2009 08:13 AM