Connectin to a computer with oracle via internet, Error: ORA-12535: TNS:operation timed out

pts.
Tags:
Networking
Oracle
I am trying to connect to another computer with Oracle 10G, via internet. I have defined a local service name, SRM, with the remote IP adress (which is a router/firewall), and port 1521. When i issue the commande TNSPING SRM I get a successfull reply: Ok, (100 msek), but when I test the service using Oracle Net manager I get the error: ORA-12535: TNS:operation timed out, and the same if I try to connect to the database using my application (which is what I want). Any suggesttions? Thanks Per-Olof

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I have seen the same problem on my local network sometimes. What I have found is that Net Manager somehow depends on DNS/WINS to do its work. One more issue could be that in tnsnames.ora it could be like this srm.mydomain.com. So it could be trying to resolve the domain first. This causes a listner timeout. Check on the Oracle server that GID is just srm and not srm.mydomain.com OR check that your LAN DNS is working properly.

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