The No suitable driver status may appear in the Connection Message in the Connection tab:

No suitable driver. There is no driver that can handle a
connection for the specified URL. The most common reason
is that the driver is not loaded in the Driver Manager.
Also make sure the URL is correct spelled.

This message indicates that there is no driver jar file for the selected JDBC Driver capable to setup the connection based on the specified Database URL. The reason is either that the required driver jar file is not loaded or that the Database URL is syntactically incorrect.