How to fix the Oracle error NNO-00307: invalid server name “string”?

In this post, you’ll learn more about the Oracle ErrorNNO-00307: invalid server name “string” with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNO-00307: invalid server name “string”

Reason for the Error NNO-00307: invalid server name “string”

Cause: the server’s name is invalid. The name is specified in the server’s names.ora configuration file.

How to fix the Error NNO-00307: invalid server name “string” ?

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

Action: Make sure that the names.server_name parameter in names.ora is correct. The names.ora file is automatically generated by the Oracle Network Manager, but administrators can edit the file at any time, introducing errors. If the file was never changed, contact Worldwide Customer Support.