Hello,

I'm following the instructions of chapter 6 of the tutorial to build a CMP entity bean. When I tried to deploy, the system always returns some error like:

org.jboss.deployment.DeploymentException: Error in jbosscmp-jdbc.xml : datasource-mapping HyperSonic SQL not found, ObjectName: jboss.j2ee:jndiName=ItemBean,service=EJB

I checked the whole thread and couldn't find answer. Can anyone give me some hint?

Thanks a lot!

p.s. The complete error message is attached.