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Re: select value within an interval

From: <Vladimir.Usov_at_gmail.com>
Date: 18 Apr 2006 11:55:44 -0700
Message-ID: <1145386544.587374.178850@g10g2000cwb.googlegroups.com> 





I used histograms to let Oracle know the data distributions in the
indexed columns.



Yes, CBO thinks it is less costly to do full scan. I know that data are
mostly evenly distributed. How can I make Oracle choose Index Range
Scan. I did not find any hints. I am not sure if tweaking of
index_cost_adj parameter will help. It will make Oracle do Index FFS.
The same huge number of consistent gets.
The only index available is on low_range, high_range columns.
Received on Tue Apr 18 2006 - 13:55:44 CDT












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