Using the BEFORE and AFTER Options
The BEFORE and AFTER options can position the new fragment either before or after an existing fragment within the fragmentation list. The name of a fragment is the name of the dbspace or the name declared in the PARTITION clause. You cannot use the BEFORE and AFTER options if the distribution scheme is round-robin or range interval.
When you attach a new fragment without an explicit BEFORE or AFTER option, the database server places the added fragment at the end of the fragmentation list, unless a remainder fragment exists. If a remainder fragment exists, the new fragment is placed immediately before the remainder fragment. You cannot position a new fragment after the remainder fragment.