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Reports performance affacted by th index? [message #89129]

Mon, 13 October 2003 21:18

rita
Messages: 41
Registered: April 1998

Member

I have two reports. One report has better performance when i had dropped a index on a table (execute time from 9hrs dropped to 3.5 hrs). However, the performance of another report which retrieve data on the same table will become worse. Can any one tell me what happen? Why a report will become better when i dropped a index?

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Re: Reports performance affacted by th index? [message #89206 is a reply to message #89129]

Fri, 28 November 2003 06:04

SK
Messages: 26
Registered: March 2001

Junior Member

Hi,

Check the explain plan before droping the index and after
index is dropped.In one of the case it is likely to do full table scan.
Thanks,
Sudhir

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