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DB2 - Problem description

Problem IC78007 Status: Closed

32 BIT XA APPLICATION RUNNING ON WINDOWS/ DB2 64 BITS FAILS WITH SQL0998N

product:
DB2 CONNECT / DB2CONNCT / 970 - DB2
Problem description:
When a 32 bit XA application runs on Windows/ DB2 64 bits, XA 
transactions get: 
 
SQL0998N  Error occurred during transaction or heuristic 
processing. 
      Reason Code = "16". Subcode = "2-80004005".
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* Windows DB2 32 bit XA application user                       * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* When a 32 bit XA application runs on Windows/ DB2 64 bits,   * 
* XA                                                           * 
* transactions get:                                            * 
*                                                              * 
*                                                              * 
*                                                              * 
* SQL0998N  Error occurred during transaction or heuristic     * 
*                                                              * 
* processing.                                                  * 
*                                                              * 
*       Reason Code = "16". Subcode = "2-80004005".            * 
*                                                              * 
* The problem only happens to 32 bit XA application.  64 bit   * 
* application is not effected.                                 * 
*                                                              * 
* This is due to XADLL registry key reference to the 32 bit    * 
* db2app.dll which cannot be loaded by Windows MSDTC.          * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to v9.7 FP5                                          * 
****************************************************************
Local Fix:
Redirect the 32-bit XADLL reg key (at 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDTC\XADLL) as below: 
 
1. Run 'regedit' on command line. 
2. Go to the registry key of: 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDTC\XADLL 
3. It currently should have a registry key name of 
<db2path>\db2app.dll 
4. Right click on this key, choose "Modify" 
5. Current 'Value data' shows: <db2path>\db2app.dll, modify it 
to: <db2path>\db2app64.dll
available fix packs:
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Solution
Problem was first fixed in Version 9.7 Fix Pack 5
Workaround
Redirect the 32-bit XADLL reg key (at 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDTC\XADLL) as below: 
 
1. Run 'regedit' on command line. 
2. Go to the registry key of: 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDTC\XADLL 
3. It currently should have a registry key name of 
<db2path>\db2app.dll 
4. Right click on this key, choose "Modify" 
5. Current 'Value data' shows: <db2path>\db2app.dll, modify it 
to: <db2path>\db2app64.dll
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
09.08.2011
13.02.2012
13.02.2012
Problem solved at the following versions (IBM BugInfos)
9.7.FP5
Problem solved according to the fixlist(s) of the following version(s)
9.7.0.5 FixList