IBM DB2 RM Switch Module

Provides the information required to build the IBM DB2 RM switch module.
Source Code
The IBM DB2 RM switch module COBOL source file, ESDB2XA.CBL is located by default in the %ProgramFiles(x86)%\Micro Focus\Enterprise Developer\src\enterpriseserver\xa directory.
Note: If you prefer to supply user credentials programatically rather than in the xa_open string, instructions for doing so are provided in the COBOL source file in the Customization section.
Building the Switch Module
You can use either of the following methods to build the IBM DB2 switch module:
Method 1
  1. Start an Enterprise Developer command prompt, 32-bit or 64-bit depending on the application, running as an administrator.
  2. Change to the %ProgramFiles(x86)%\Micro Focus\Enterprise Developer\src\enterpriseserver\xa directory (default location).
  3. Enter build db2
Method 2
  1. Start an Enterprise Developer command prompt, 32-bit or 64-bit depending on the application.
  2. Copy all files from the %ProgramFiles(x86)%\Micro Focus\Enterprise Developer\src\enterpriseserver\xa directory (default location) to any location where you have WRITE permission.
  3. Change to the directory containing the copied files.
  4. Enter build db2
Build Output
The build process produces two binary files from the ESDB2XA.CBL COBOL source file:
Binary File Type
ESDB2XA_S.DLL static
ESDB2XA.DLL dynamic

You can register an RM switch module with Enterprise Server dynamically, or register it statically depending on which binary file you use. We recommend that you use the dynamic switch module option, as this ensures that only active databases used in the global transaction participate in the TM/RM XA flow.

Additional Resources
For more information on using the IBM DB2 RM switch module, including the open string definition and details of supported SQL operations, see the following:
  • The Database Access - DB2 ECM section of the Additional Software Requirements topic.
  • The Transaction Managers help topic available in the IBM RDBMS documentation.
  • DB2 9.1 - The X/Open XA Interface programming considerations help topic available in the IBM RDBMS documentation.