Daylight Saving Time Issues on Oracle WebLogic Server

The Java platform has deprecated these three-letter time zones — EST, EDT, HST, HDT, MST, and MDT — and replaced them with Olson time zones such as Americas\New_York. PeopleTools functionality is not affected by this change; however, your Oracle WebLogic Server might be affected. As a result, daylight saving time is calculated incorrectly by Oracle WebLogic Server for these time zones under certain circumstances.

For more information , there are several articles available on OTN:

• Sun Alert 102836: Olson TZ Data Incompatibility Issues

• Background Overview on Sun Alert Doc

• Timezones, Daylight Savings, and the TZupdater for the Java Runtime Environment (JRE)