maxIdleTime seemed to do it.  I actually lowered my timeout to 30 
seconds like on our production MySQL server and set maxIdleTime to 20 
seconds and if I watch the processlist, it will reconnect every 20 
seconds with approximately 3 connections.  I've seen the SQL statement 
parameter too because I think a lot of people tweak that to use SELECT 1 
instead of whatever the default is.
Scott Battaglia wrote:
> Kevin,
>
> There is also a parameter to test for stale connections by executing a 
> SQL statement.  Check the c3p0 documentation for the exact name of 
> it.  If I happen to see it in any of our configuration code here I'll 
> pass it along.
>
> -Scott
>
> On Dec 12, 2007 8:06 AM, Kevin Jordan <[EMAIL PROTECTED] 
> <mailto:[EMAIL PROTECTED]>> wrote:
>
>     Hopefully I think I've found it in the maxIdleTime property for c3p0
>     which I set to just before the wait_timeout in my.cnf.  Unfortunately
>     that requires me waiting about that amount of time to see if it does
>     time out, so if any one does know if that will fix it, let me know,
>     otherwise I'll post back when it's been idle 8~12 hours.  Thanks.
>
>     Kevin Jordan wrote:
>     > After many hours of non-use (12 or more) the MySQL connection
>     will time
>     > out and thus the first person to reconnect will get an EOFException
>     > error.  I tried to make my application use c3p0 to pool the data
>     > connections for the connector j driver, but even that ends up
>     timing
>     > out.  Is there any config option I can pass to avoid having this
>     error
>     > come up?
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>
>
> -- 
> -Scott Battaglia
>
> LinkedIn: http://www.linkedin.com/in/scottbattaglia
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