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
-
From the WUI main menu, click 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.
- 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.
- Click Create.
- Provide the appropriate information to create your transaction
group definition.
-
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.