DSTv20 is now available and certified with Oracle E-Business Suite Release 11i, 12.0, and 12.1. The DSTv20 update includes the timezone information from Olson tzdata 2012j and is cumulative: it includes all previous Oracle DST updates.
Is Your Apps Environment Affected? When a country or region changes DST rules or their time zone definitions, your Oracle E-Business Suite environment will require patching if:
The latest DSTv20 timezone definition file is cumulative and includes all DST changes released in earlier time zone definition files. DSTv20 includes changes to the following timezones since the DSTv19 release:
What Patches Are Required? In case you haven't been following our previous time zone or Daylight Saving Time (DST)-related articles, international timezone definitions for E-Business Suite environments are captured in a series of patches for the database and application tier servers in your environment. The actual scope and number of patches that need to be applied depend on whether you've applied previous DST or timezone-related patches. Some sysadmins have remarked to me that it generally takes more time to read the various timezone documents than it takes to apply these patches, but your mileage may vary. We've published the following Notes which identify the various components in your E-Business Suite environment that may need DST patches: