Removing a TOR from a generic resource

There are several ways to remove a region from a generic resource.

About this task

  • Close the z/OS® Communications Server ACB.
  • Shut down CICS®. If you want to remove the region permanently, you must remove the generic resource name from the GRNAME system initialization parameter before restarting CICS.
  • Issue a SET VTAM® DEREGISTERED command to remove the region dynamically—that is, without closing the z/OS Communications Server ACB or shutting down CICS. This may be useful if, for example, you need to apply minor maintenance to a TOR.

    When a TOR is dynamically removed from a generic resource, any terminals which are logged on are gradually redirected to the remaining generic resource members, as they log off and back on again.

    To re-register CICS with the generic resource, you must close and reopen the z/OS Communications Server ACB.

Important:
If you remove a region from a generic resource:
  • You should end any affinities that it owns. If you do not, z/OS Communications Server will not allow the affected APPC and LU6.1 partners to connect to other members of the generic resource. See Ending affinities.
  • The region that has been removed should not try to acquire a connection to a partner that knows it by its generic resource name, unless the partner has ended its affinity to the removed region.