Anyone can comment on these two plans plaease... These decreases the cpu time

Thank you I have marked the question as answered.

Published by: SMY on July 14, 2009 11:36

-What query works really faster? What query is less I/O?
-Why did you change the mode of the optimizer? Why did you change the optimizer_index_cost_adj? Which suggest that one or two of them were incorrect?
-What version of Oracle?

With only two query plans, there is not much anyone can say. The optimizer expects the plan to run faster, but it's only because you said that you want only the first 100 lines and access to the index are much cheaper than what he thought. If one of those is bad, new guess of the optimizer is probably worse than his first assumption.

Justin

Tags: Database

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