Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
Home -> Community -> Usenet -> c.d.o.server -> bitmap index not used
A column in a large table has very non-distinctive values. I created a
bitmap index on it. When I query
select * from mytable where bmp_indexed_column = 'aValue'
the explain plan shows a table scan was used, even if I added hint /* index
(mybmpindexname)*/.
Running O9i on linux.
how do i tuning such queries?
Kenny Received on Thu Oct 03 2002 - 19:02:16 CDT