Problem running scripts against SQL Server

We have some scripts that we run as part of our unit tests.

This worked fine until today.

• We have tri开发者_C百科ed running scripts with both windows and sql authentication.
• We have no problems logging in using sql manager

Anybody have any ideas why we get the following error:

Shared Memory Provider: No process is on the other end of the pipe.

Sqlcmd: Error: Microsoft SQL Native Client : Communication link failure.

Thanks

Shiraz

EDIT

Thanks for the replys. The actual appears to be a password problem, which used up all the connections. The process was not listening because there were no available connections.

Look in SQL Server Configuration Manager and make sure the protocols you are using to connect to it are setup correctly. I suggest you enable "Shared Memory" and "TCP/IP".

Ask around, try and determine what was changed on your environment--by who, and how--that caused a working process to stop working. If succesful, you will (a) have a strong lead on discovering the details of what's going wrong, and (b) be in a position to ensure it doesn't recur. (Just solving the tech side might not prevent it from happening again...)