In a message dated 11/9/2006 4:02:40 P.M. Central Standard Time,
[EMAIL PROTECTED] writes:
APAR PK24076 to resolve issue that affects Daylight Saving Time defaults
used when parsing the TZ and _TZ environment variables in a C/C++
application."
>>
Don't forget in mixed OS environment all those puppies need to line up.
JAVA:
Some countries are still evaluating whether they will adopt the new rules for
themselves. You should anticipate more changes in DST and time zone rules
for countries that typically align with U.S. DST rules.
Problems Affecting Java Applications
The Java Runtime Environment (JRE) stores rules about DST observance all
around the globe. Older JREs will have outdated rules that will be superseded
by
the Energy Policy Act of 2005. As a result, applications running on an older
JRE may report incorrect time from March 11, 2007 through April 2, 2007 and
from October 29, 2007 through November 4, 2007.
Solutions for Java Applications
If you are concerned about application failures that may result from these
DST changes, you should update your Java Runtime Environment. The following
Java platform versions have correct time rules to handle the DST changes that
will affect U.S. time zones in 2007. You can download any of the following
Java
platform versions to resolve this DST issue:
* _JDK 6 Project (beta)_ (https://jdk6.dev.java.net/)
* _J2SE 5.0 Update 6_ (http://java.sun.com/javase/downloads/index.jsp)
or later
* _J2SE 1.4.2_11_ (http://java.sun.com/j2se/1.4.2/download.html) or
later
* _J2SE 1.3.1_18 or later_
(http://java.sun.com/j2se/1.3/download.html)
Platform Considerations
The required Java SE changes for U.S. DST are different from those required
at the operating system (OS) platform level (i.e., Solaris, Linux, Microsoft,
etc). Detailed descriptions of OS changes are beyond the scope of this
document. You should contact your OS vendor for updates or corrections for
this
issue. The Sun Alert referenced later in this document provides details for
Sun
Solaris corrective patches.
For More Information
Find out more about DST and time zones rule changes from these other
resources:
* Sun Alert Notification: _Daylight Saving Time (DST) Changes for
Australia (2006), United States (2007), and Others_
(http://sunsolve.sun.com/search/document.do?assetkey=1-26-102178-1)
* _About Daylight Saving Time_
(http://www.timeanddate.com/time/aboutdst.html)
* _When Does Daylight Time Begin and End_
(http://aa.usno.navy.mil/faq/docs/daylight_time.html)
* _Daylight Saving Time from Wikipedia_
(http://en.wikipedia.org/wiki/Daylight_saving_time)
* _Saving Time, Saving Energy_
(http://www.energy.ca.gov/daylightsaving.html)
* _Australian Time Zone Changes Affect Java Applications_
(http://java.sun.com/developer/technicalArticles/Intl/AusTimeZone/)
Windows:
Preparing for daylight saving time changes in 2007
Published: June 16, 2006 | Updated: November 6, 2006
Starting in the spring of 2007, daylight saving time (DST) start and end
dates for the United States will transition to comply with the Energy Policy
Act
of 2005. DST dates in the United States will start three weeks earlier (2:00
A.M. on the second Sunday in March) and will end one week later (2:00 A.M. on
the first Sunday in November).
Microsoft will be producing an update for Microsoft products affected by the
new United States daylight saving time transition dates. These updates will
be released through a combination of channels including Microsoft Customer
Support Services (CSS), hotfixes incorporated in Knowledge Base articles,
Windows Update, Microsoft Update, Windows Server Update Services (WSUS), and
the
Microsoft Download Center.
Supporting the DST changes on Windows operating systems
For _Windows XP Service Pack 2 (SP2)_
(http://www.microsoft.com/windowsxp/sp2/default.mspx) , _Windows Server 2003_
(http://www.microsoft.com/windowsserver2003/default.mspx) , and _Windows
Server 2003 Service Pack 1 (SP1)_
(http://www.microsoft.com/technet/downloads/winsrvr/servicepacks/sp1/default.mspx)
,
Microsoft will release a single global time zone update which will include
changes for the United States DST change. This time zone update will also
include changes for other related DST changes and time zone behavior and
settings
that will take place in 2007 or have taken place since these versions of
Windows were originally released. It will include some changes that have
previously been released as individual hotfixes (such as the Sri Lanka change
in time
zone offset) or have been individually documented in prior Knowledge Base
articles. These updated time zone definitions will also ship with _Windows
Vista_ (http://www.microsoft.com/windowsvista/) .
Windows Vista will have these changes included in the release-to-market
version of the operating system. Windows XP SP2 and Windows Server 2003 will
require the update. _Windows XP SP1_
(http://www.microsoft.com/windowsxp/downloads/updates/sp1/default.mspx) and
older operating system versions have passed
their end of support dates and will not be receiving the update. Windows 2000
has passed the end of mainstream support and will not be receiving an update
without an Extended Support Hotfix Agreement. _Find more information about
support policies around hotfixes._ (http://www.microsoft.com/lifecycle)
Versions of Windows which are not currently supported can be manually updated
using the tzedit.exe utility or other techniques documented in Knowledge
Base article _914387_ (http://support.microsoft.com/?kbid=914387) and
similar
articles for other countries. _Find more information about support policies
around hotfixes._ (http://www.microsoft.com/lifecycle)
(http://www.microsoft.com/windows/timezone/dst2007.mspx#top) _Top of page_
(http://www.microsoft.com/windows/timezone/dst2007.mspx#top)
Testing and deploying the Windows time zone updates
A test version of the 2007 global time zone update for Windows is available
to businesses that wish to test the impact of the upcoming time zone changes.
To obtain a copy of the update contact your Technical Account Manager or
Product Support Services and reference Knowledge Base article _924840_
(http://support.microsoft.com/kb/924840/) .
The Windows updates are currently planned to be available for production
deployment for all customer starting in mid-November 2006 through Microsoft
Download Center. The update will be available via Windows Update, Automatic
Update, and WSUS starting on December 12, 2006. Updates will be posted to this
site as the final deployment date approaches.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
