EJB deployment error
I'm making a project like the car rental tutorial but when i want to deploy the ear project i got this error :
Caught exception during application startup from SAP J2EE Engine's deploy service:
java.rmi.RemoteException: Error occurred while starting application example.org/test/ear and wait. Reason: Clusterwide exception: server ID 7831650:com.sap.engine.services.ejb.exceptions.deployment.EJBDeploymentException: The DataSource for PersistenceManager APPLICANT_TRACKER_POOL is not created.
I don't know how to look ...