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Latest DSTv16 Timezone Patches Available for E-Business Suite R12

Steven Chan
Senior Director

Hourglass iconIf your E-Business Suite Release 11i or 12 environment is configured to support Daylight Saving Time (DST) or international time zones, it's important to keep your timezone definition files up-to-date. They were last changed in January 2011 and released as DSTv15.

DSTv16 is now available and certified with Oracle E-Business Suite Release 12. The DSTv16 update includes the timezone information from Olson tzdata 2011g.  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:

  • Your Oracle E-Business Suite environment is located in the affected country or region OR
  • Your Oracle E-Business Suite environment is located outside the affected country or region but you conduct business or have customers or suppliers in the affected country or region

We last discussed the DSTv15 patches on this blog. The latest DSTv16 timezone definition file is cumulative and includes all DST changes released in earlier time zone definition files. DSTv16 includes changes to the following timezones since the DSTv15 release:

  • Africa/Cairo
  • Africa/Casablanca
  • America/Juneau
  • America/Havana
  • America/Santiago
  • Asia/Amman
  • Atlantic/Stanley
  • Europe/Istanbul
  • Pacific/Honolulu
  • Pacific/Easter
  • Pacific/Apia
  • Egypt
  • Cuba
  • Chile/Continental
  • Turkey
  • US/Hawaii
  • Chile/EasterIsland
  • Asia/Istanbul

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:

What happened to EBS 11i?

The certification of DST v16 with Oracle E-Business Suite Release 11i is still in progress.  Oracle's Revenue Recognition rules prohibit us from discussing certification and release dates. You're welcome to monitor or subscribe to this blog for updates, which I'll post as soon as soon as they're available.    

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Comments ( 4 )
  • Michael Brown Wednesday, August 10, 2011

    Unfortunately, My Oracle Support has the wrong entitlement set for DST-16. The version of the database patch (12320006) is restricted to Extended Support. This means that it is not available for R12 customers until support fixes the entitlement so that people with EBS support can download the patch.

  • Steven Chan Friday, August 12, 2011

    Hello, Michael,

    Thanks for letting us know about that.

    This prompted us to review the policy for database patches. Our Database team clarified the distribution status for two different categories of patches.

    The Database is in its Extended Support phase right now. All server / standalone Database patches will be restricted to customers with Extended Support licences for that release. client side patches such as DST patches required by Fusion Middleware 11g and Oracle E-Business Suite Release 12 will be made generally available.

    Our Database team has updated the DST patch (12320006) to make it generally available for all platforms.

    Please let me know if you have any issues accessing that.



  • guest Thursday, September 22, 2011


    We are having current timezone version 4. Version 12.1.3, with are implemting more that 30 counteirs, so did we need to apply DST patch? jsut like DST16 or DST15,

    latest patchs for current env let me know asap.

    mail me :sakthivel.psakthi@gmail.com


  • Steven Chan Thursday, September 22, 2011


    We recommend that you apply the latest certified timezone patches to all of your environments, including E-Business Suite environments.



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