12c and Later Releases: ORA-28040 After Upgrade: No Matching Authentication Protocol
(Doc ID 1957995.1)
Last updated on FEBRUARY 22, 2021
Applies to:Oracle Net Services - Version 18.104.22.168 to 22.214.171.124.0 [Release 12.1 to 19]
Business Intelligence Suite Enterprise Edition - Version 126.96.36.199.180116 to 188.8.131.52.180116 [Release 11g]
Oracle Database - Enterprise Edition - Version 184.108.40.206.0 to 220.127.116.11.0 [Release 19]
Information in this document applies to any platform.
Following an upgrade to the version 12c database, the following errors are thrown when attempting to connect from remote
ORA-28040: No matching authentication protocol exception
This is a new installation of the version 12 database.
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