How to fix the Oracle error ORA-28042: Server authentication failed?

In this post, you’ll learn more about the Oracle ErrorORA-28042: Server authentication failed with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-28042: Server authentication failed

Reason for the Error ORA-28042: Server authentication failed

Server failed to authenticate itself to the client

How to fix the Error ORA-28042: Server authentication failed ?

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

Confirm that the server is a valid database server.

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