I was aware of this "warning", and I don't think it is the cause of
the problem I'm facing. It affects only Windows 2K (and maybe older
windows).

I do not have the "power" of setting TCP KeepAlive in that Linux
server. It is another company who deal with the server. I asked them to
do that many times before, but my requests was ignored, that's why I
tried DummyPacketInterval.

Carlos
Firebird Performance in Detail - http://videos.firebirddevelopersday.com
www.firebirdnews.org - www.FireBase.com.br

AF> Hi,

>> After enabling the DummyPacketInterval parameter on firebird.conf, and
>> set it to 60 (= 1 minute), some of the terminal machines started to
>> have problems. They ran my application (made in Delphi + IBO) and
>> during the connection process, the application just disappears from
>> the taskmgr

AF> that's what FIREBIRD.CONF says about using Dummy packets:

AF> # DO NOT USE THIS OPTION. It may hang or crash Windows on the client side as
AF> # explained here:
AF> http://support.microsoft.com/default.aspx?kbid=296265
AF> # or may not prevent eventual inactive client disconnection for other OS.


AF> So, that sould explain the behavior you're describing.

AF> If you use FB 2.1, just set TCP KeepAliveTime to 1 minute and you're done.
AF> (that should be possible to be done in FB 1.5 too... but it really do not
AF> work in Windows... maybe next 1.5 build fix it!)


AF> Regards,
AF> Anderson