GilaMonster (12/19/2012)

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abitguru (12/19/2012)

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We dont use auto update. And is hard to find a "slow/off time" .. you know. We are thinking the best way to schedule to run in spare time.

If you have auto_update off then you must manually maintain your statistics (all of them). With it on, you can get away with just manually updating stats where the 20% threshold is too high.