sun webserver - DST Time changes

Hi Cjoh44,

We抳e some experience with Daylight time, because here in Brazil it抯 a terrible chaos.

Every year in Brazil has a different date to Daylight time and I advice you to update your JDK or use Sun Time Zone Update Tool, it avoids your JVM to add or remove one hour in some circumstances.

For example, if you have a Web Application that doesn抰 allow transactions after 03:00pm in a JVM affected by this problem, it will allow your web application to make transactions until 04:00pm or it will block your transaction at 02:00pm.

It抯 a good practice keep your Web Server always updated with last JDK Update (today JDK 1.5 Update 10).

You can read more information about it on

http://java.sun.com/developer/technicalArticles/Intl/USDST/

Download Last JDK Update or Sun Time Zone Update Tool

http://java.sun.com/javase/downloads/index_jdk5.jsp

Information about change JDK/JRE on Java System Web Server

http://docs.sun.com/app/docs/doc/819-6512/6n8h7gq7e?q=JDK&a=view

Ges7a at 2007-7-8 1:52:55 >

From what I can tell, for correct DST operation in Java applications running in Web Server 6.0, one would need to install WS 6.0 sp10 or later and configure it to use an external 1.4.2.x JDK/JRE (since WS 6.0 does not seem to support the 1.3.x JDK/JRE, only 1.2.x and 1.4.x)

WS 6.0sp10 release notes, 1.2.x bundled and 1.4.2.x supported:

http://docs.sun.com/source/819-4464-10/rn60sp10.html#wp34403

WS 6.0sp9 release notes, 1.4.2.x not yet supported:

http://docs.sun.com/source/819-0833-05/rn60sp9.html#wp34403

JDK information:

http://java.sun.com/developer/technicalArticles/Intl/USDST/

Is that correct?

Thanks,

Peter

PeterWatkinsa at 2007-7-8 1:52:55 >

If you are using WS 6.0SP10, then one of the following JDK versions may be used to address the JDK DST issues:

J2SE 1.4.2_11 or later

J2SE 1.3.1_18 or later

Please note that WS 6.0 release is in "End-of-Service Life - Limited Support" stage, so its suggested to upgrade to WS 6.1 release at the earliest possible.

Thanks

Manish

kapmania at 2007-7-8 1:52:55 >

I was able to download the tzupdater tool from here:

http://java.sun.com/javase/downloads/index.jsp

Both WS 6.0sp6 and JDK 1.4.1_01 are very old. You should consider upgrading to current versions( WS 6.1sp7 or WS 7.0) and use the JDK bundled with those releases.

Having said that, in the interim, you may be able to use tzupdater to update your exisiting JDK install. Here's the BigAdmin DST page for reference:

http://www.sun.com/bigadmin/hubs/dst/software/

Thanks

Manish

kapmania at 2007-7-8 1:52:55 >