Dasource deployment with Tomcat

Deploying a datasource shows the following error:

 org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null', cause:
java.sql.SQLException: No suitable driver

Check if /conf/catalina/localhost/ is up to date with your current configuration.

Check if your application has the datasource definition on META-INF/context.xml

Check if both /conf/catalina/localhost/ and META-INF/context.xml match in the datasource definition.