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Asked: 2026-05-10T16:25:26+00:00

I recently deploy one web application in one of my development servers. I’m using

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I recently deploy one web application in one of my development servers. I’m using oracle, asp.net and c#. When I run the application in the server everything works fine, but when I try to run the application outside of the server (using my pc, for example) i get this error:

ORA-12154: TNS:could not resolve the connect identifier specified

If i run the application in my pc with visual studio it works fine.

Oracle is installed in Server ‘A’ and the application is in server ‘B’. Server ‘A’ is in one domain and server ‘B’ is in other domain.My pc is in the same domain has Server ‘A’.

In my pc I can find the file tnsname.ora in C:\oracle\product\10.2.0\client_1\NETWORK\ADMIN, but in Server ‘B’ i can´t find it anywhere

any idea? Thanks for the help.

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  1. Guess: An oracle client is not installed on Server B.

    If you do have an oracle client installed then you can still put a tnsnames file in any location (Such as a directory on a network share). In order to do this, set a TNS_ADMIN system variable (System Properties->Advanced->Environment Variables on XP) to the directory containing your tnsnames files.

    For me for example I have a system variable: TNS_ADMIN – C:\oracle\ora92\network\ADMIN

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