VMS Help  —  SET  FILE  /RU_ACTIVE, Description
    The SET FILE/RU_ACTIVE command 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. This is useful if a data file is unavailable due to active
    recovery units and an unavailable recovery unit journal.

                                 CAUTION

       When you clear the RU_ACTIVE attribute (using the command
       SET FILE/RU_ACTIVE=0/RU_FACILITY=1), the data in the file is
       likely to be in an inconsistent state. Do not use the data
       file unless you can ensure that the data is consistent.
       After clearing the RU_ACTIVE attribute, you can unmark
       the file for journaling, delete the file, and re-create a
       consistent file using a backup copy.

    You can determine the recoverable facility that controls active
    recovery units (if any) for the file by entering the DCL command
    DIRECTORY/FULL or DUMP/HEADER. You can use the ANALYZE/RMS_
    FILE/RU_JOURNAL command to determine the state of any active
    recovery units.
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