$CenqCt
The $CENQCT function reports the number of unused entries within the resource enqueuing table. The number must be more than the number of noncritical resources needed by the next statement(s) in the request. All resources except the following are noncritical:
DIRECT EXISTENCE INDEX RECORD ENQUEUE
The function has no input and returns a single number. For example, 'PRINT $CENQCT' displays the number of unused entries.