Ora 12154 error

Question

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, bu

Answer 1

Possible Resolutions -

Verify that the TNSNAMES.ORA exists and is accessible.

Make sure that there are no syntax errors in TNSNAMES.ORA.

Verify that the connection string is correct.

Verify if there are any DNS issues.

If the problem is while connect to server using PL sql developer client.try to install SQL developer within Program File instead of Program Files(x86)'s