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Clearing out old idle connections

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Hullo :)


We have pg 8.1.3 and for whatever reason (network blips, poor pooling on behalf of the client, etc.) we sometimes see a large number (dozens) of old connections in the idle state which never get reused.

Is there a function in postgres similar to MySQL's 'wait_timeout' which automatically closes any connections which have been idle for N seconds? Is this functionality possible to to script/cron by examining the pg catalogs and finding a 'last used' timestamp?

I am aware the correct response is 'deal with the cause, not the symptoms', however I assure you that this academic approach wins no friends in the enterprise market that postgres pitches itself at :)

Cheers,
Gavin.



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