Requires read (R), write (W), and control access. Being the owner
    of the file is one way to get control access.

    Designates the recoverable facility that controls active recovery
    units for the file. Alternatively, when used with the /RU_
    FACILITY qualifier, the SET FILE/RU_ACTIVE command lets you clear
    the designated recoverable facility that controls active recovery
    units for the specified file.

    The SET FILE command is not supported for remote files. You
    must use the SET FILE command from the system where the file
    is located.

    For more information, see the RMS Journaling documentation.

    Format

      SET FILE/[NO]RU_ACTIVE=ru-facility data-filespec[,...]