12c and Later Releases: ORA-28040 After Upgrade: No Matching Authentication Protocol
(Doc ID 1957995.1)
Last updated on APRIL 26, 2023
Applies to:
Oracle Net Services - Version 12.1.0.1 to 19.5.0.0.0 [Release 12.1 to 19]Business Intelligence Suite Enterprise Edition - Version 11.1.1.9.180116 to 11.1.1.9.180116 [Release 11g]
Oracle Database - Enterprise Edition - Version 19.3.0.0.0 to 19.3.0.0.0 [Release 19]
Information in this document applies to any platform.
Symptoms
Following an upgrade to the version 12c database, the following errors are thrown when attempting to connect from remote
clients:
ORA-28040: No matching authentication protocol exception
Changes
This is a new installation of the version 12 database.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |