Hi,

I run the test on Win XP machine. In the Event Viewer there aren't any of this TCP/IP Warnings saying: "TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts" as described in the link you have posted.

It seems that is the firebirdclient which returns the error (-923, 'isc_attach_database: \n connection rejected by remote interface').

bye
Robert
________________________________

Von: firebird-support@yahoogroups.com [mailto:firebird-support@yahoogroups.com] Im Auftrag von Mark Rotteveel
Gesendet: Freitag, 13. März 2009 15:53
An: firebird-support@yahoogroups.com
Betreff: Re: [firebird-support] Classic Server

> Hi,
>
> >It happens on my computer after opening more than 44 connection to the
> >DB with Classic Server. Probably it depends on the hardware resources
>
>
> I'd say this is some OS limitation (configuration) on max number of
> connections to some process (eg: for security reasons). You did not
> mention
> what OS you're using. If Linux, look at xinetd configuration, you can
> raise
> the max number of connections there

The database path contained C:\ so it is a Windows server. On Windows there is a limit to the number of concurrent TCP connection attempts. See http://www.mydigitallife.info/2005/11/15/windows-xp-sp2-tcp-connection-limit-event-id-4226/ <http://www.mydigitallife.info/2005/11/15/windows-xp-sp2-tcp-connection-limit-event-id-4226/>

Mark
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