11g and Older: How To Use the Parameter SQLNET.ALLOWED_LOGON_VERSION Correctly (Doc ID 1304142.1)

Last updated on JULY 12, 2017

Applies to:

Oracle Net Services - Version 9.2.0.8 to 11.2.0.4 [Release 9.2 to 11.2]
Oracle Database - Enterprise Edition - Version 9.2.0.8 to 11.2.0.4 [Release 9.2 to 11.2]
Oracle Database - Standard Edition - Version 11.1.0.7 to 11.1.0.7 [Release 11.1]
Oracle Database - Enterprise Edition - Version 12.2.0.1 to 12.2.0.1 [Release 12.2]
Information in this document applies to any platform.
This documented is limited in scope to versions below 12.1. For versions 12c and newer, please see: 12c: ORA-28040 After Upgrade: No Matching Authentication Protocol

Goal

Describe how SQLNET.ALLOWED_LOGON_VERSION affects the authentication protocol negotiation between client and server.

Solution

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