Re: Should Oracle outperform PostgreSQL on a complex multidimensional query?

=?iso-8859-1?Q?P=E5l_Stenslet?= <paal.stenslet@exie.com> writes:
> I have established similar conditions for the query in PostgreSQL, and =
> it runs in about 30 seconds. Again the CPU utilization is high with no =
> noticable I/O. The query plan is of course very different from that of =
> Oracle, since PostgreSQL lacks the bitmap index merge operation.

Perhaps you should be trying this on PG 8.1?  In any case, without
specific details of your schema or a look at EXPLAIN ANALYZE results,
it's unlikely that anyone is going to have any useful comments for you.

            regards, tom lane