Copy-and-paste this in Tomcat context.xml for a H2 datasource configuration to H2 server

Context.xml for H2 datasource configuration

     <Resource name="jdbc/DefaultDB"
            auth="Container"
            type="javax.sql.DataSource"
            username="sa"
            password="sa"
            driverClassName="org.h2.Driver"
            url="jdbc:h2:tcp://localhost/~/test"
            maxActive="8"
            maxIdle="4"/>