On Sat, 27 Oct 2007 03:04:47 +0100 Gregory Stark <stark@xxxxxxxxxxxxxxxx> wrote: > > O.k. first you might be grinding through your 20 checkpoint segments > > but in reality what I think is happening is you are doing foreign > > key checks against all of it and slowing things down. > > If you're going to berate someone about top-posting perhaps you > should attach your own commentary to relevant bits of context :P It was hardly berating Greg, I even said please. > I > suspect you've guessed it right though. In fact I suspect what's > happening is he doesn't have an index on the referencing column so > the foreign key checks are doing sequential scans of. > Sincerely, Joshua D. Drake -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 24x7/Emergency: +1.800.492.2240 PostgreSQL solutions since 1997 http://www.commandprompt.com/ UNIQUE NOT NULL Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL Replication: http://www.commandprompt.com/products/
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