How to fix the Oracle error NNC-00405: network failure?

In this post, you’ll learn more about the Oracle ErrorNNC-00405: network failure with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNC-00405: network failure

Reason for the Error NNC-00405: network failure

Cause: The network connection between the client program and the name server has failed, either because the server has shut down, or because the network path to the server has stopped working. This error is usually displayed underneath an error which describes the problem in more detail.

How to fix the Error NNC-00405: network failure ?

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

Action: Contact your name server administrator to make sure that the server being connected to is running and listening on the address used, and that there is network connectivity between the two end-points.