VMS Help Sys Parameters, PQL_MENQLM  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    PQL_MENQLM sets the default limit on the minimum number of locks
    that can be queued at one time by a process created by the
    Create Process ($CREPRC) system service or the DCL command RUN
    (Process).

    PQL_MENQLM has the DYNAMIC and GEN attributes.