Adabas System Coordinator uses internally-generated session communication
             IDs for configuration file access. It is normal for one or more active user
             queue elements to be seen in the Adabas nucleus that contains the configuration
             file. These UQEs are continually reused during the lifetime of a client job or
             service. If required, the Adabas DELUF command can
             be used to delete outstanding UQEs once all client activity is terminated.
             Alternatively that nucleus can be started with the
             OPENRQ=YES parameter. This will cause automatic deletion
             of Coordinator UQEs after an inactivity timeout period of one minute.