Detecting ENF Code 35 for Structure Alter

At the completion of structure alter processing, the system issues at least one ENF signal to indicate that structure alter processing has ended.

If the structure alter resulted in a structure with a smaller structure size (contract request), then the system issues a generic ENF event code 35. The ENF signal parameter list does not contain the structure name, but does imply that additional coupling facility resources might be available because the structure size is decreased. Connectors who have been unable to connect to a structure can listen for this event and then attempt the connect request again.
The system also issues an ENF event code 35 when structure alter processing is complete. The signal does not imply that additional coupling facility resources are available, but simply indicates that a structure alter has completed. The ENF signal parameter list presented to an ENF listen exit will contain the name of the structure. Connectors who have been unable to connect to a structure can listen for this event.

Connectors wishing to connect to a structure can use the IXCQUERY macro to verify that the structure alter actually has completed because ENF 35 is issued for several different events.