The following link provides more information regarding the
change in Daylight Saving Time for Western Australia:
The dates affected are as follows:
03 December 2006 - 25 March 2007
28 October 2007 - 30 March 2008
26 October 2008 - 29 March 2009
After this trial period ends, the Western Australia Parliament will
consider extending the period further or making it permanent.
Failure to accommodate the date change may lead to inaccurate data
being recorded or displayed. For more information about potential impact,
please refer to Possible
implications if one does not apply the Daylight Saving Time fixes.
Users of Microsoft® Windows® operating environments should refer to the
site Western Australian Daylight Savings Changes for Microsoft Windows for
the Year 2006/2007, from the Microsoft support site.
How do I know if my
systems could be affected? |
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All IBM® WebSphere® Application Server releases, including
servers, application clients, and plug-ins will be affected by this DST
change. In addition, your Operating Systems may also be affected.
|
Use the IBM Time Zone
Update Utility to update Java |
 |
The majority of WebSphere Application Server versions can
be fixed using the JTZU tool to update Java JREs/SDKs.
Users of WebSphere Application Server may need to use the IBM Time Zone
Update Utility (JTZU) to apply updated time zone information to their Java
JREs/SDKs to prevent any runtime problems. For more information about the
JTZU tool:
- Review the following information:
IBM
Time Zone Update Utility for Java
FAQ:
IBM Time Zone Update Utility for Java
- Download the utility from IBM developerWorks: IBM Time
Zone Update Utility for Java
- Run the utility.
The JTZU has been updated to resolve the DST change for Western Australia
going into effect on 3 December 2006. |
What versions of
WebSphere Application Server do not yet have a fix for Western Australia
DST? |
 |
WebSphere Application Server versions 4.0 and 5.0
installations on HP-UX, and version 4.0 on Solaris do not yet have a fix.
The JTZU tool will not be able to address this issue.
To download the WebSphere Application Server V5.0 fix for Solaris,
please refer to: Solaris
Java 2 SDK 1.3.1 SDK ifix for Western Australia Daylight Saving
Time.
Additional information is forthcoming and will be posted here, as it
becomes available.
|
What could happen if I
do not update my systems? |
 |
Any Western Australia time zone-based application that
uses time will be affected.
The following typical scenarios and operations will produce incorrect
results as a consequence of using the time offset by one hour.
- Time format and display
- Time zone name display
- Operations that check whether a particular date is in
daylight saving time
- Computations and/or business logic based on daylight
saving time
- Any of the above that run on a system on which time is set
to a time zone other than a Western Australia time zone, but does
computations based on a Western Australia time zone
Please refer to Possible
implications if one does not apply the Daylight Saving Time fixes for
information about the consequences of failing to update your systems with
the new Western Australia time zone data. |
Other useful information about Java and DST:
8 Dec 2006 |
Fixed typo in March 2008 date |
29 Nov 2006 |
Initial publication |
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