Grant Fritchey (9/14/2013)

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I would not recommend disabling parallelism. It's a good thing. I would suggest that you bump up the default value for the cost threshold for parallelism. The default value of 5 is just too low. I'd suggest trying a number like 35 and then monitoring the system to see if you need to adjust from there. A good friend of mine who consults regularly says she starts at 50 and then does the same.