/sys$common/syshlp/helplib.hlb Sys Parameters, LOCKIDTBL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    LOCKIDTBL sets the initial number of entries in the system Lock
    ID table and defines the amount by which the Lock ID table is
    extended whenever the system runs out of locks. One entry must
    exist for each lock in the system; each entry requires 4 bytes.

    For simple timesharing systems, the default value is adequate.
    If your application uses many locks, as in the case of heavy RMS
    file sharing or a database management application, you should
    increase this parameter. When you change the value of LOCKIDTBL,
    examine the value of RESHASHTBL and change it if necessary.

    The OpenVMS Lock Management facility is described in the OpenVMS
    Programming Concepts Manual. You can monitor locks with the
    MONITOR LOCK command of the Monitor utility.

    LOCKIDTBL has the AUTOGEN, FEEDBACK, and MAJOR attributes.