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what is "db file parallel read"？

627138Oct 21 2010 — edited Oct 21 2010

hi gurus

I see this event on a sql statement which using index to to sevice the query,I am supposed to see "db file sequential read"
but not "db file parallel read"

What the hell is "db file parallel read" and how to overcome it?

Thanks for your time.

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Locked on Nov 18 2010

Added on Oct 21 2010

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