How to fix the Oracle error NNL-00011: no server with name “string” exists?

In this post, you’ll learn more about the Oracle ErrorNNL-00011: no server with name “string” exists with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNL-00011: no server with name “string” exists

Reason for the Error NNL-00011: no server with name “string” exists

Cause: The user issued a SET SERVER request and the current managed Oracle Names server was unable to translate that name into an address. Alternatively, the user issued a control program request to a specific server, and that server’s name could not be translated into an address. Both problems are almost always caused by mis-typing the server name.

How to fix the Error NNL-00011: no server with name “string” exists ?

You can fix this error in Oracle by following the below steps

Action: Re-issue the request with a valid server name.