From: Johan De Meersman
Date: May 13 2011 10:59am
Subject: Re: problem
List-Archive: http://lists.mysql.com/mysql/224997
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----- Original Message -----
> From: "Gavin Towey" <gtowey@stripped>
> 
> The server will disconnect idle connections after a while.  The
> wait_timeout variable controls how many seconds it will wait.  You
> can set it for your connection when you connect by issuing a query
> like:
> 
> SET SESSION wait_timeout=NNN;
> 
> Just give it a large enough value.

That will, of course, work; but it has as side effect that improperly terminated connections (application crash, ...) will stay around for that time, too.

It is better to have your connection (-pooling) code be aware of connection timeouts, and have it transparantly reconnect. If I recall correctly, the client library has a ping() function or something similar.


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