Benefits of managing resources with a resource structure

Using Resource Manager (RM) and a resource structure to manage IMS TM resources provides a number of benefits.

The benefits of using RM and a resource structure include:

Enforcement of resource type consistency

Prevents the same name being used for more than one resource type

Enforcement of resource name uniqueness

Ensures that certain resources can only be active one at a time within the IMSplex

Global callable services

Allows exit routines to obtain LTERM, node, and user resource information across the IMSplex

Terminal and user status recovery

Allows terminals and users to resume work without having affinity to any IMS

VTAM® can manage Generic Resource affinities

Specifying GLOBAL as the status recovery mode allows VTAM to manage Generic Resource affinities instead of IMS. If an IMS system fails, VTAM can reassign terminals to another IMS system even if the terminals have affinity to the failed IMS system.

Retrieval of enablement values for global IMS functions across IMS cold starts

If you enable an IMS function globally by using the UPDATE IMSFUNC command and you use RM and a resource structure, the function enablement value is stored in a resource structure so that the value is retrieved across an IMS cold start.