If by not practical you mean, "no one has implemented a multivariable testing approach," I'll agree with you. But multivariable testing is definitely a valid statistical approach to solving just such problems.


Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320

On Mar 21, 2005, at 11:51 AM, Josh Berkus wrote:

That's not really practical. There are currently 5 major query tuning
parameters, not counting the memory adjustments which really can't be left
out. You can't realistically test all combinations of 6 variables.

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