Model definitions for connection autoinstall

Model definitions for connection autoinstall are different from those for terminal autoinstall in that they do not have to be defined explicitly as models. Any installed connection definition can be used as a “template” for an autoinstalled connection.

For performance reasons, use an installed connection definition that is not otherwise in use. The definition is locked while CICS® copies it and, if you have a very large number of sessions autoinstalling, the delay may be noticeable.

You can set the model connection definition out of service by using the CEMT or EXEC CICS SET CONNECTION OUTSERVICE command. This effectively disables autoinstall for connections, because the autoinstall control program cannot access and copy the model definition.

For CICS-to-CICS connection autoinstall, the MAXIMUM attribute in the SESSIONS definition of the model connection should be large enough to accommodate the largest device using the model.

When creating model connections, you must ensure that the usergroup modenames specified in the session's MODENAME field match the usergroup modenames in the connection to be autoinstalled.