How to fix the Oracle error TNS-04077: WARNING: No password set for the Oracle Connection Manager instance.?

In this post, you’ll learn more about the Oracle ErrorTNS-04077: WARNING: No password set for the Oracle Connection Manager instance. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-04077: WARNING: No password set for the Oracle Connection Manager instance.

Reason for the Error TNS-04077: WARNING: No password set for the Oracle Connection Manager instance.

Cause: A connection to the Oracle Connection Manager instance was made with no password from the user.

How to fix the Error TNS-04077: WARNING: No password set for the Oracle Connection Manager instance. ?

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

Action: Ignore the warning if the Oracle Connection Manager is secure enough. Otherwise, use SET PASSWORD command to set a new password for the instance.