How to fix the Oracle error NNC-00422: invalid data type name “string”?

In this post, you’ll learn more about the Oracle ErrorNNC-00422: invalid data type name “string” with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNC-00422: invalid data type name “string”

Reason for the Error NNC-00422: invalid data type name “string”

Cause: A caller has provided an invalid data type name to the name server program interface.

How to fix the Error NNC-00422: invalid data type name “string” ?

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

Action: Not normally visible to the user, except when using the name server control program. If the error occurs when using the control program, retry the failing operation with a valid type name. Otherwise, turn on tracing and re-execute the failing operation. If the error persists, contact Worldwide Customer Support.