Creating a transaction group

A transaction group is an association of logically similar transactions. The similarity can be based on workload management (WLM) or affinity requirements, common shared processing requirements, or any other user-determined characteristic. You can use the Transaction group definitions view to create a transaction group.

About this task

For workload management, any WLM information you specify in the transaction group, including the routing algorithm type, overrides the defaults supplied in the associated workload specification (WLMSPEC). If you specify alternative WLM attributes in a transaction group, you can change workload routing characteristics for the associated transactions dynamically without stopping your routing region.

You can use either the CICSPlex® SM WUI or the CICS Explorer® to create a transaction group.

For CICS Explorer users:
Refer to the CICS Explorer product documentation for instructions.
For CICSPlex SM WUI users:

Procedure

  1. From the WUI main menu, click Administration > Workload manager administration > Transaction group definitions to open the Transaction group definitions view.

    This view displays a list of existing transaction group definitions. You can create, update, and remove transaction group definitions, and add a transaction to a transaction group.

  2. Optional: To use information from an existing definition when you create a new definition, select the check box in the Record column next to the required existing definition.
  3. Click Create.
  4. Provide the appropriate information to create your transaction group definition.

    See Transaction group definitions - TRANGRP for a description of the fields in this view.

  5. Click Yes to create the new definition and add it to the data repository.

    The Transaction group definitions view is displayed again with an entry for the new definition.

What to do next

If you modify the WLM information for an installed transaction group, you must discard its associated WLM definition (WLMDEF) and then reinstall it, so that the transaction group named by the WLM definition is also refreshed. However, if you want to change the routing algorithm type (the ALGTYPE attribute), you can change it immediately without discarding and reinstalling the associated WLMDEF by using the Active workload transaction groups (WLMATGRP) views and the SET command.