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Message Posted: Thu, 13 Nov 2003 @ 12:41:04 GMT

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If the JI isn't in the explain, then it definitely isn't being used. There is a possiblilty that some of your data (disk) is being cached; therefore, if you run the query without the JI, then run the query with the JI, then the RDBMS is using some of the cached disk. Try running the query with a JI, then drop the JI and run the query again. Times should be the same (holding all other system variables constant.)

Hope this helps,

Clay

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