Use a command-line tool to verify that the specific database port is open and listening.
You develop a report on your laptop. You use a connection string pointing to localhost or 127.0.0.1 . Everything works fine. The Problem: You deploy that report to the production server. The connection string still says localhost . The production server tries to connect to "localhost," looking for a database on the production server itself , which doesn't exist. Use a command-line tool to verify that the