I've only looked quickly at this query, but why do you think it should be
using the shipto_key index? There doesn't appear to be any kind of
filtering on the cust_shipto table so I don't know why an index would help
since every record would match. Am I missing something?
Also, what explain
one place to look would be your sort_area_size. your doing summing and group
bys... if this is too small your going to do that in a temp tablespace
instead of in memory.
your using bitmap indexes right? this implies that some of this data atleast
is non-transactional correct? if its
