We've recently moved our ERP SAP System from Oracle 12c (12.1.0.2) to a new Oracle 18c (18.7.0.0.0) database.
Everything is working fine, but we've found out our satellite applications can't connect to the new database. The connection attempt results in the following error:
java.sql.SQLException: ORA-28040: No matching authentication protocol
The satellite apps use the ojdbc14.jar driver, so we've already added the SQLNET.ALLOWED_LOGON_VERSION_SERVER = 8 parameter in our sqlnet.ora file, but the problem is still happening.
Does somebody know if the ojdbc14.jar driver is compatible with the actual database release?
Thanks beforehand,
Alex.