If you need to control which CA Product is active and is using LServ File server services.
You should check this if an LServ STC is active on your machine.
If you have SYSVIEW available, enter command "enq *,*,lservdsn" for QName LSERVDSN.
The RName column gives the full dataset name belonging to the Lserv's client.
If the searched file is not in this list, then it is not under control of LServ at this time.
With other products search for enqueued resources QName LSERVDSN.