If this solves your problem then you can avoid the next step. In case of Listener.ora file check for Host and Port entry in Listener tag for valid hostname and port number.Īnd if you are using TNSnames.ora file for validating the hostname and port number then search for the entry which has the same name as your SID and then check for host and port number entry in that particular tag. In case you don’t have access to listener.ora file then you can check the tnsnames.ora file. After all “It’s the small things in a relationship that means the most.”įor the valid hostname and port number, you can check the Listener.ora if you have access to your server as the listener is a server process. Though these are small things we cannot avoid them. Step 1: Make sure your entries are correctįirst of all to solve “The network adapter could not establish the connection” error, check whether you have entered the correct username and password as well as the correct Hostname and Port number.
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