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

    This special parameter is used by Compaq and is subject to
    change. Do not change this parameter unless Compaq recommends
    that you do so.

    POOLCHECK is used to investigate frequent and inexplicable
    failures in a system. When POOLCHECK is enabled, pool-checking
    routines execute whenever pool is deallocated or allocated.

    Two loadable forms of SYSTEM_PRIMITIVES.EXE are available at
    boot time. The default image, which contains no pool-checking
    code and no statistics maintenance, is loaded when POOLCHECK
    is set to zero. When POOLCHECK is set to a nonzero value, the
    monitoring version of SYSTEM_PRIMITIVES.EXE, which contains both
    pool-checking code and statistics maintenance, is loaded.

    Setting the SYSTEM_CHECK parameter to 1 has the effect of setting
    POOLCHECK to ON (1).

    For further information about pool checking, refer to the OpenVMS
    VAX Device Support Manual.

    POOLCHECK is a DYNAMIC parameter.