Index question ???

From: Janet Linsy <janetlinsy_at_yahoo.com>
Date: Tue, 14 Aug 2001 12:41:36 -0700
Message-ID: <F001.0036A65D.20010814124151@fatcity.com>

Hi all,

According to Oracle's doc, for a table > 1000 rows, if the query returns < 4% of the data, an index can be built.

If I have a table, with ID 1,2, 3 return < 4% of the row, but ID 4, 5, 6 returns > 4% rows. Should I build an index on ID column?

Also you know any general guildlines for building, not building indexes? OEM generates suggestions too, should I follow?

Thanks you!

Janet

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Author: Janet Linsy
  INET: janetlinsy_at_yahoo.com

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