Tech Tip: Daylight Savings Time Arrives Early This Year, and Here’s How to Get Ready

Starting in the spring of 2007, Daylight Savings 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 Sunday March 11, 2007) and will end one week later (2:00 A.M. on Sunday November 4, 2007).

Solution Notes:
The Pervasive PSQL database relies on the computer's internal system clock for maintaining accurate date and time. If the underlying OS has been modified to accurately reflect the new Daylight Savings Time, then PSQL should have no known issues.

For Windows:
For information on available updates to Microsoft's operating systems, please visit the Microsoft website and read about 2007 time zone update for Microsoft Windows operating systems.

NOTE: Microsoft is providing updates for the Windows 2003 and Windows XP operating systems. They also provide manual steps for modifying Windows 2000 as no update is available. For Windows Vista an updated time zone definition is included so no update is required.

For Linux:
Users running Pervasive PSQL v9x on Linux should check with the distribution vendor for updates to support the DST change. Some versions will require an update to the currently installed version of Java, while others may already be running a version of Java that supports the new DST definitions.

For Pervasive Control Center (PCC):
For Pervasive PSQL v9x users, the PCC requires a Java Runtime Environment (JRE) update from Sun Microsystems. For more information on the update, please visit their website and read about U.S. Daylight Saving Time Changes in 2007.

Prior versions of Pervasive.SQL (V8 or less) do not require the JRE update.

NOTE: To verify your current version of JAVA, execute the following from a command prompt:

Java -version

1.4 users should apply J2SE 1.4.2_11 (or later)

1.5 users should apply J2SE 5.0 Update 6 (or later)