How to fix the Oracle error NNO-00633: detected fatal delegation loop involving server “string”?

In this post, you’ll learn more about the Oracle ErrorNNO-00633: detected fatal delegation loop involving server “string” with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNO-00633: detected fatal delegation loop involving server “string”

Reason for the Error NNO-00633: detected fatal delegation loop involving server “string”

Cause: the server detected a fatal delegation loop while forwarding a request. A loop occurs when the server’s topology data indicates that it should forward a request to itself. The server immediately shuts down in response to this error.

How to fix the Error NNO-00633: detected fatal delegation loop involving server “string” ?

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

Action: An internal error not normally visible to the user. For further details, turn on tracing and restart the server. If the error persists, contact Worldwide Customer Support.