Introduction › How ECMF Manages Resource Conflicts

How ECMF Manages Resource Conflicts

ECMF is primarily a reporting facility that issues messages to time-sharing option (TSO) users and operators so that they are aware of resource conflicts. Although z/OS may issue conflict messages that identify resources involved in a conflict, these messages do not identify the tasks or TSO users involved in the conflict. Also, these messages are not sent to the TSO users, which makes conflict resolution time-consuming and difficult.

ECMF issues informative conflict messages to TSO users and operators so that you can resolve conflicts before system performance is degraded. You can tell CA MII which resource conflicts you want to receive messages for by specifying ECMF=YES or ECMF=NO for the QNAMEs in the QNAME list. If ECMF detects a conflict for one of these resources, ECMF issues messages that tell the TSO user, the operator, or both what resource is involved in the conflict, what user or task controls the resource, and what system needs that resource. The TSO user or operator then can free the resource or cancel a job to resolve the conflict.

You can determine how often ECMF issues conflict messages for each class of resources. This lets you receive notification immediately for critical requests (such as data set allocations), while receiving notification for other requests only if the conflict persists. You also can modify these values dynamically to change the way ECMF handles conflicts for a class of resources.