Re: Is there a problem running vacuum in the middle of a transaction?

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От
Doug McNaught
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Re: Is there a problem running vacuum in the middle of a transaction?
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m366awlchs.fsf@belphigor.mcnaught.org
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Is there a problem running vacuum in the middle of a transaction? Mike Cianflone <mcianflone@littlefeet-inc.com>
Tom Lane  writes:

> Doug McNaught  writes:
> > Hmmm--AFAIK, VACUUM is supposed to grab locks on the tables it
> > processes, which will block until all open transactions against that
> > table are finished.  So either VACUUM or your transactions will have
> > to wait, but they shouldn't interfere with each other. 
> 
> Upshot: a client holding an open transaction, plus another client trying
> to do VACUUM, can clog up the database for everyone else.

Thanks for the clarification.  But the original poster's problem, that 
VACUUM caused his transactions to fail, theoretically shouldn't
happen--right?

-Doug
-- 
Free Dmitry Sklyarov! 
http://www.freesklyarov.org/ 

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