Specifies the number of levels on the page lock tree used to
    manage locks. For example, if you specify COUNT IS 3, the fanout
    factor is (10, 100, 1000). Oracle Rdb locks a range of 1000 pages
    and adjusts downward to 100 and then to 10 and then to 1 page
    when necessary.

    If the COUNT IS clause is omitted, the default is 3. The value of
    n can range from 1 through 8.