On 19-5-2013 11:33, hugo.larson wrote:

>> Can it be that you use a connection pool and the connection was
>> "waiting" in the pool for a long time, then it is accessed and the first
>> network operation fails?
>>
>> In old pool classes there was a property which caused the pool to
>> execute some statements that should always work (SELECT 1 FROM
>> rdb$database), and if it failed, it recycled the connection before it
>> was returned to the application.
>>
>> Roman
>>
> Hello Roman,
>
> No pools are used.
> Just plain DataExpress DataBase class that stays open.

But how long is that connection open, and how long is it idle? It might
indeed be that a timeout occurred and Firebird closed the connection.

Mark
--
Mark Rotteveel