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

It seems you need to install Oracle Client on "Server B" (the application server), and configure it's TNSNAMES.ORA file. This is required since otherwise, the running code will have no idea where to look for the database you use in the application (probably you're configured a data source in web.config or hard-coded something). Remember - you cannot access Oracle (easily) without Oracle Client.