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connection dropped by firewall

I am programming c++ with oracle oci and have some trouble when using a
customers firewall, which drops oracles tcp connection after some
minutes or after restart. My client app seems to send TNS to the server,
the server does not response (because of the firewall), so tcp starts
retries up to 10 minutes. After this timespan my oracle call returns
with an error code.

It is not possible to reconfigure the firewall, but is there any chance
to recognize the problem earlier, so that the app doe snot hang? It
would be okay for some seconds or up to a minute, but 10 minutes are
definitivly too long.

What should i do to recognize this lost connection from client side?

regards markus

Jul 19 '05 #1
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