In 2007, Daylight Saving Time (DST) in the USA will begin on March 11, which is two weeks earlier than in previous years. DST in the USA will end on November 04, which is one week later than in previous years. The versions of the private Java Runtime Environment (JRE) that are distributed with SAS 9.1.3 software do not recognize this change, and incorrectly calculate the beginning and ending of DST in the USA. The versions of the Java Software Development Kit (JDK) that are used with Tomcat, WebLogic, and WebSphere servers that host SAS Web applications also give incorrect results regarding DST in the USA for 2007.

Customers should use the utility programs that are provided by the Java vendors to update the existing JREs and JDKs with only the new Daylight Saving Time beginning and ending dates. See below for details.

Note that there may be more than one SAS private JRE installed on a given system. Customers should be sure to update each JRE installed. On Windows, SAS private JREs are installed by default in <SAS-home>\Shared Files\JRE. On UNIX, SAS private JREs are installed by default in <SASroot>/sasjre.

Although later versions of the JRE and JDK include correct DST information, those versions also include numerous other, unrelated changes. Because SAS Institute personnel have not tested these updated versions of JRE and JDK, customers should not install them.

For information about the versions of the JRE that are distributed with SAS 9.1.3 and the versions of the JDK that are required by SAS web applications, see the Third-Party Software page at:

   http://support.sas.com/resources/thirdpartysupport

For information about the SAS System and the U.S. Energy Policy Act of 2005, see SAS Note 18773

For more information about how the changes affect Java, see:

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

For more information about the update utility programs and how to download them, use the following links to the appropriate vendor Web sites:

Sun (for Windows and Solaris users)

Sun Microsystems Inc., released a GA version of its updating tool for Java called Sun Java SE TZupdater Tool (also known as JDK US DST Timezone Update Tool - 1.0) at:

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

For more information about Sun Microsystem's tzupdater tool, see:

   http://java.sun.com/javase/tzupdater_README.html

Note: Customers should use the "-bc" flag when running Sun's TZupdater tool.

HP

HP's version of the TZupdater for HP-UX is now available at:

   http://www.hp.com/products1/unix/java/DST-US.html

HP's version of the TZupdater for OpenVMS Alpha is now available at:

   http://h18012.www1.hp.com/java/alpha/DST-US.html

Note: Customers should use the "-bc" flag when running HP's TZupdater tool.

IBM

The IBM Time Zone Update Utility for Java (JTZU) is available at:

   http://www-128.ibm.com/developerworks/java/jdk/dst/index.html

Note: Customers should download JTZU Version 1.4.7c.

For information and statements of support for WebLogic and WebSphere, use the following links:

WebLogic

BEA's support statement is at:

   http://support.bea.com//support_news/Patch_for_2007_Daylight_Savings_Time_Changes.jsp

BEA will support WebLogic on a JDK that used the tzupdater tool to update time zone data.

WebSphere

IBM's support statement can be found at:

   http://www-1.ibm.com/support/docview.wss?rs=180&uid=swg21219396

IBM supports the use of the tzupdater tool with the JDK that is included with WebSphere.

Operating System and Release Information