The default is DEPOSIT ROOT SPECIFICATION if no other keyword
    follows the DEPOSIT ROOT command.

    The DEPOSIT ROOT command allows a user to remove recovery-unit
    journal (.ruj) file references from the database root (.rdb)
    file, allowing access to the database. However, this action
    will mark the database as "eternally corrupt," which results
    in a warning message in all future system management (Oracle
    RMU) functions against the database. The database is either
    structurally corrupt, logically corrupt (violates a constraint),
    or "user-data" corrupt (for example, balance is $250.00 instead
    of $300.00).

    Removing the .ruj file references from the .rdb file permits
    users to attach to the database in situations where the .ruj
    files have been accidentally deleted. Users must realize that
    the database is corrupt when they attach. The database must be
    restored and recovered from clean backup files to guarantee the
    consistency of the database contents.

    Use the USER n RUJ_FILENAME="" clause to remove an .ruj file
    reference from the .rdb file.

                                   NOTE

       After you commit a changed .rdb file name, the database
       cannot be accessed until you copy it to the location (using
       all the necessary qualifiers for the file specification)
       that you specify with the DEPOSIT ROOT command. After that,
       users attach to the database at the new location.