ORA-28040: No matching authentication protocol : Oracle 12c Upgrade

Question

We have migrated our Oracle database to 12c from 11g. We have a legacy application running in Java 1.5 and using ojdbc14.jar.

Our application is not able to create c

Answer 1

I had a problem connecting to DB after migration to ORACLE 12c. The error was:java.sql.SQLException: ORA-28040: No matching authentication protocol. After setting this parametar SQLNET.ALLOWED_LOGON_VERSION=8 it was solved.

Thank you very much