Configuring global coordination with DB2

For more information about TCP/IP connections, see the example in the section about message SQL1224N in Resolving problems when using databases.

To enable shared memory:

1. Stop the broker by running the following command, where broker is the name of your broker:

   mqsistop broker

2. Run the following command to ensure that the broker is run in an environment with the extended memory variable exported:

   export EXTSHM=ON

3. Restart the broker by running the following command, where broker is the name of your broker:

   mqsistart broker

4. On the DB2 server, ensure that shared memory support is turned on. For more information, see Configuring databases for global coordination of transactions.

1. Open the queue manager's qm.ini file in a text editor. The qm.ini file is located at /var/mqm/qmgrs/queue_manager_name/qm.ini, where queue_manager_name is the name of the broker that is associated with the queue manager.
2. At the end of the qm.ini file, paste the following stanza:

   XAResourceManager:
   Name=DB2
   SwitchFile=db2swit
   XAOpenString=db=MyDataSource,uid=MyUserId,pwd=MyPassword,toc=t
   XACloseString=
   ThreadOfControl=THREAD

   The switch file is supplied by IBM® Integration Bus.

3. On the XAOpenString line, replace the following values with values that are appropriate for your configuration:
   • MyDataSource is the name of the data source to which you want to connect.
   • MyUserId must be the user name that the broker uses to connect to the database.
     You can define the user name that the broker uses in a number of ways; make sure that you specify the correct name in this file. The broker determines the user name by checking the following conditions in the order listed:

     1. A specific user name and password for this data source name (DSN), that you have defined by running the mqsisetdbparms command.
     2. A default user name and password for all DSNs, that you have defined by running the mqsisetdbparms command.
     3. A default user name and password for all DSNs, that you have defined by specifying the -u parameter on the mqsicreatebroker command.

        This parameter is valid only for brokers that you have migrated from previous releases.

     4. The broker service user name, which you define with the -i parameter on the mqsicreatebroker command
   • MyPassword is the password that is associated with the user name.
4. Accept the default values for all the other lines in the stanza. For example:

   XAResourceManager:
   Name=DB2
   SwitchFile=db2swit
   XAOpenString=db=MYDB,uid=wbrkuid,pwd=wbrkpw,toc=t
   XACloseString=
   ThreadOfControl=THREAD

endmqm queue_manager_name
strmqm queue_manager_name

When the queue manager restarts, check the queue manager log for all warnings that are associated with the restart. The log files are located in /var/mqm/qmgrs/queue_manager_name/errors, where queue_manager_name is the name of the queue manager that you restarted.

1. From the Start menu, open WebSphere MQ Explorer.
2. Open the queue manager Properties dialog box, then open XA resource managers.
3. Click the Add button to create a resource manager.
   1. In the Name field, enter a name to refer to a resource manager.
   2. In the SwitchFile field, enter the full path to the switch file, as shown in the following example where install_dir is the location in which the broker is installed:

      install_dir\sample\xatm\db2swit.dll

   3. In the XAOpenString field, paste the following string:

      db=MyDataSource,uid=MyUserId,pwd=MyPassword,toc=t

   4. In the XAOpenString field, replace the values with values that are appropriate for your configuration:
      1. MyDataSource is the name of the data source to which you want to connect.
      2. MyUserId must be the user name that the broker uses to connect to the database.
         You can define the user name that the broker uses in a number of ways; make sure that you specify the correct name in this file. The broker determines the user name by checking the following conditions in the order listed:

         1. A specific user name and password for this data source name (DSN), that you have defined by running the mqsisetdbparms command.
         2. A default user name and password for all DSNs, that you have defined by running the mqsisetdbparms command.
         3. A default user name and password for all DSNs, that you have defined by specifying the -u parameter on the mqsicreatebroker command.

            This parameter is valid only for brokers that you have migrated from previous releases.

         4. The broker service user name, which you define with the -i parameter on the mqsicreatebroker command
      3. MyPassword is the password that is associated with the user name.
      For example:

      db=MYDB,uid=wbrkuid,pwd=wbrkpw,toc=t

   5. Accept the default values for all the other fields on the page.

endmqm queue_manager_name
strmqm -si queue_manager_name

When the queue manager restarts, check the queue manager log for all warnings that are associated with the restart. The log files are located in install_dir\WebSphere MQ\Qmgrs\IB9QMGR\errors, where install_dir is the location in which the broker is installed.

1. From the Start menu, open WebSphere MQ Explorer.
2. Open the queue manager Properties dialog box, then open XA resource managers.
3. Click the Add button to create a resource manager.
   1. In the Name field, enter a name to refer to a resource manager.
   2. In the SwitchFile field, enter db2swit
   3. Copy the provided DB2 switch files from the broker install location to the queue managers exits and exits64 directories (by default under C:\Program Files (x86)\IBM\WebSphere MQ).
      Copy the file:

      install_dir\sample\xatm\db2swit32.dll

      into the queue managers exits directory, and rename it to db2swit.dll.
      Copy the file

      install_dir\sample\xatm\db2swit.dll

      into the queue managers exits64 directory.
   4. In the XAOpenString field, paste the following string:

      db=MyDataSource,uid=MyUserId,pwd=MyPassword,toc=t

   5. In the XAOpenString field, replace the values with values that are appropriate for your configuration:
      1. MyDataSource is the name of the data source to which you want to connect.
      2. MyUserId must be the user name that the broker uses to connect to the database.
         You can define the user name that the broker uses in a number of ways; make sure that you specify the correct name in this file. The broker determines the user name by checking the following conditions in the order listed:

         1. A specific user name and password for this data source name (DSN), that you have defined by running the mqsisetdbparms command.
         2. A default user name and password for all DSNs, that you have defined by running the mqsisetdbparms command.
         3. A default user name and password for all DSNs, that you have defined by specifying the -u parameter on the mqsicreatebroker command.

            This parameter is valid only for brokers that you have migrated from previous releases.

         4. The broker service user name, which you define with the -i parameter on the mqsicreatebroker command
      3. MyPassword is the password that is associated with the user name.
      For example:

      db=MYDB,uid=wbrkuid,pwd=wbrkpw,toc=t

   6. Accept the default values for all the other fields on the page.

endmqm queue_manager_name
strmqm -si queue_manager_name

When the queue manager restarts, check the queue manager log for all warnings that are associated with the restart. The log files are located in install_dir\WebSphere MQ\Qmgrs\IB9QMGR\errors, where install_dir is the location in which the broker is installed.