Problem Note 19105: Effect of changes to Daylight Saving Time (DST) in the USA on Java (with SAS® 9.1.3), beginning in 2007
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: