An optional clause that can be specified with the RESERVING
    clause. When you specify the WITH AUTO_LOCKING clause, Oracle Rdb
    automatically locks any relations referenced from constraints and
    triggers defined on the reserved relations when the referenced
    relations are accessed from the constraints or triggers. If one
    of these referenced relations is also a reserved relation, the
    explicitly specified lock mode must not conflict with the lock
    mode required by the constraint or trigger that references the
    relation.

    The default is WITH AUTO_LOCKING. Specify the WITH NOAUTO_LOCKING
    clause if you do not want to use the auto-locking option.