EDIT: The reason I went this route was that M$ (bless their hearts) obfuscated download locations of their earlier versions of jdbc drivers, and I still needed to connect to later instance versions as well. So I added it as a separate driver.
I am also getting same error. I have done same Configuration but same error showing can you help me to figure out? I am also attached screen short of configuration.
Unless you are using the exact same Ignition version and Database version, and seeing an identical error, you will likely find more help creating your own post.
If you are using a newer database then you likely need to update the JDBC driver jar file for your database driver in Ignition.