ORA-28040 Using JDBC 9i for Connection to 12c Database (Doc ID 2111118.1)

Last updated on APRIL 10, 2017

Applies to:

JDBC - Version to [Release 9.0.1 to 9.2]
Information in this document applies to any platform.


After upgrading a database from to, JDBC 9i connections fail with ORA-28040: No matching authentication protocol.

ORA-28040 No matching authentication protocol

The issue can be reproduced at will with the following steps:
1. Upgrade the database from to
2. Try to establish a connection from the application to the upgraded database using JDBC 9i.


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