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bitmap index not used

From: Kenny Yu <kyu_at_biodiscovery.com>
Date: Thu, 3 Oct 2002 17:02:16 -0700
Message-ID: <uppmbh3oeo7436@corp.supernews.com>


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

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