It's most likely just a MySQL timeout. The simplest way of dealing with this is to add 
$dbh->{mysql_auto_reconnect} = 1;

[download]
immediately after connecting to the database.

In reply to Re: The Moose, dbh class attribute, mod_perl handler and a lost SQL connection by dsheroh
in thread The Moose, dbh class attribute, mod_perl handler and a lost SQL connection by ZAmonk

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