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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