How to fix the Oracle error ORA-09756: osnpns: no port in the name server.?

In this post, you’ll learn more about the Oracle ErrorORA-09756: osnpns: no port in the name server. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09756: osnpns: no port in the name server.

Reason for the Error ORA-09756: osnpns: no port in the name server.

osnpns could not find the given named port in the name server.

How to fix the Error ORA-09756: osnpns: no port in the name server. ?

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

Check the error code in sercerrno. Make sure the shadow process and network name server are still running.