Fatal NI Connect Error 12679 in the alertlog after enabling encryption on the server side

(Doc ID 2328858.1)

Last updated on NOVEMBER 22, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

You see this error in the alertlog when you configure network encryption by adding the below in the sqlnet.ora   file.


SQLNET.CRYPTO_CHECKSUM_SERVER=REQUIRED
SQLNET.ENCRYPTION_SERVER=REQUIRED
SQLNET.ENCRYPTION_TYPES_SERVER=(AES256, RC4_256)

When you open the database you start receiving the below error message in alert log.

Fatal NI connect error 12679, connecting to:

(LOCAL=NO)

VERSION INFORMATION:
TNS for Linux: Version 12.1.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 12.1.0.2.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 12.1.0.2.0 - Production
Time: 13-SEP-2017 12:42:54
Tracing not turned on.
Tns error struct:
ns main err code: 12679

Cause

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