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Configuring an MQ QSG to communicate with DB2

Use the following procedure to configure an IBM MQ queue-sharing group (QSG) to cache shared-object definitions on an IBM DB2 subsystem that is running on a remote LPAR.

Before you begin

To use Subzero as an interface between IBM MQ and IBM DB2, you must have a license for the BMC Subsystem Optimizer for DB2 product.

Ensure that the BMC Configuration Component for z/OS (LGC) component is running.

Enabling MQ to communicate with DB2

  1. Make the following changes to the Subzero load library:

    1. Copy module DSNARRS from the DB2 DSNLOAD library to module DSNARA00 in your Subzero load library.

      Example

      BRD.V20.BMCLINK(DSNARRS)
    2. Copy module BRDARRS in your Subzero load library as DSNARRS.

    Note

    If you subsequently apply DB2 maintenance to DSNARRS or apply Subzero maintenance to BRDARRS, you must copy and rename the modules again.

  2. Verify that the following modules in the Subzero load library are listed in the MQ master address space (noting that other modules might also be present):
    • DSNARA00—Contents identical to DSNARRS in the DB2 DSNLOAD library
    • BRDLOCSS—Subzero module
    • BRDDCINT—Subzero module
    • DSNARRS—Contents identical to the BRDARRS Subzero module

  3. In the MQ master address space, edit the JCL to insert the Subzero load library before the DB2 load library in the STEBLIB configuration.You can insert these after the MQ load libraries, and before any DSNLOADs.

    Note

    All data sets in the STEPLIB DD must be APF authorized.

  4. Edit the Subzero redirection configuration in the LGC:
    1. From the DB2 Product Configuration Main Menu, select Manage Product Options.
    2. From the Product Option Sets panel, place your cursor on the plus sign (+) to the left of BMC Subsystem Optimizer for zEnterprise and press Enter.
    3. Select the option set that you want to edit.
    4. Insert a new entry by typing I next to DB2 SSID/GROUPs to Redirect and pressing Enter.
    5. Change the new entry as needed.For example DKJ2 on LPAR * will redirect to DKJ1 on LPAR *.
    6. Press F3 to save your entries.
  5. Enter the following command to reload the map:/dbcssid BRD,CONFIG,RELOAD
  6. Start Subzero:
    1. Start Subzero on the MQ LPAR by entering / ssid BRD,START.Replace ssid with the DBC subsystem ID.
    2. Start Subzero on the DB2 LPAR by entering / ssid BRD,START.
  7. Start MQ.
  8. Verify that the following messages are displayed, confirming that the process has been successful:
    • BMCMRD0026I
    • BMCBRD0150I

Related topic

Configuring-MQ-for-redirection


 

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