Disk_File=[(Reader_Threads=integer)]

    Specifies that you want to dump a multiple disk backup file. This
    is a backup file that was created by the RMU Backup command with
    the Disk_File qualifier.

    The Reader_Threads keyword specifies the number of threads that
    Oracle RMU should use when performing a multithreaded read
    operation from disk files. You can specify no more than one
    reader thread per device specified on the command line (or in the
    command parameter options file). By default, one reader thread is
    used.

    This qualifier and all qualifiers that control tape operations
    (Label, Media_Loader, and Rewind) are mutually exclusive.