How to fix the Oracle error NNF-04009: Usage: tns2nis ?

In this post, you’ll learn more about the Oracle ErrorNNF-04009: Usage: tns2nis with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNF-04009: Usage: tns2nis

Reason for the Error NNF-04009: Usage: tns2nis

Cause: The conversion tool was not invoked properly. The filename should either be tnsnames.ora or native.ora

How to fix the Error NNF-04009: Usage: tns2nis ?

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

Action: Restart the conversion tool with the proper parameter.

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