Last updated on DECEMBER 06, 2016
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 and later
Information in this document applies to any platform.
***Checked for relevance on 01-Aug-2016***
ORA-12638 when connecting via SQL*PLUS using TNSNAMES resolution with SQLNET.AUTHENTICATION_SERVICES=(NTS) set in the SQLNET.ORA file.
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