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"Volker Lauterfeld" <lauterfeld_at_cos-gmbh.de> wrote in message
news:9ddnql$uhe$02$1_at_news.t-online.com...
> What ports do I have to open in the firewall to enable connectivity
between
> an oracle server and a remote client.. The standardports of the listener
> (1521 or 1526) are ok. But when I look into the listener.log I see that
the
> traffic goes through other ports. What can I do?