ORA-17954
The configured DN, "{0}", does not match the DN, "{1}", of the server''s certificate
Cause
The Distinguished Name (DN) provided in the JDBC URL using SSL_SERVER_CERT_DN or the JDBC property "oracle.net.ssl_server_cert_dn" does not match the DN's of the listener's or server's certificate.
Action
Modify the server's DN on the JDBC side or configure the proper certificate on both the listener and the server.