> Good Day
>
> Someone already passed the issue below:
>
> 'SelectQuery: Unsuccessful execution caused by a system error that precludes
> successful execution of subsequent statements.
> Error reading data from the connection.'
>
> I'm using Firebird 2.5 and Delphi 7
>
> Some hint of what might be?

Usually, either the server restarted or the Firebird server crashed. 
Anything suspicious in firebird.log on the server?


-- 
With regards,
Thomas Steinmaurer
http://www.upscene.com/

Professional Tools and Services for Firebird
FB TraceManager, IB LogManager, Database Health Check, Tuning etc.

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