Tomcat & JDBC error connecting to 19c

ORA-28040: No matching authentication protocol

This is quite generic error.
This fixed worked for me.

1. Find the JDBC driver that is being used, jdbc.jar can reside in many location e.g.

$CATALINA_HOME/lib/

webapps/myApp/WEB-INF/lib

2. Updated the correct JDBC in your location

3. Restart tomcat