Oracle : Ошибка ORA-12661

"Protocol authentication to be used"
*Cause: The Oracle Advanced Security authentication service has determined
that the Oracle Net transport protocol in use is to be utilized to
authenticate a user's identity.
*Action: This error is used solely to communicate information between the
authentication service and the Oracle Net session layer and should not
normally be visible.
If the error is seen, contact Oracle Worldwide Support.

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