[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - java.lang.RuntimeException: javax.management.InstanceAlready

[Rockym]

Hi

I have a little problem, because I have made the persistence and made the conecction to MySQL, but the console marks the next. 

java.lang.RuntimeException: javax.management.InstanceAlreadyExistsException: persistence.units:jar=tutorialEstudiante.jar,unitName=Estudiante already registered.

20:36:58,211 INFO  [EJB3Deployer] Deployed: file:/Applications/jboss/server/default/deploy/tutorialEstudiante.jar
20:36:58,228 ERROR [URLDeploymentScanner] Incomplete Deployment listing:

--- MBeans waiting for other MBeans ---
ObjectName: persistence.units:jar=tutorialEstudiante.jar,unitName=Estudiante
  State: NOTYETINSTALLED
  I Depend On:
    jboss.jca:name=MySQLDS,service=ManagedConnectionFactory

ObjectName: jboss.j2ee:service=EJB3,module=tutorialEstudiante.jar
  State: FAILED
  Reason: java.lang.RuntimeException: javax.management.InstanceAlreadyExistsException: persistence.units:jar=tutorialEstudiante.jar,unitName=Estudiante already registered.

--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: jboss.jca:name=MySQLDS,service=ManagedConnectionFactory
  State: NOTYETINSTALLED
  Depends On Me:
    persistence.units:jar=tutorialEstudiante.jar,unitName=Estudiante

ObjectName: jboss.j2ee:service=EJB3,module=tutorialEstudiante.jar
  State: FAILED
  Reason: java.lang.RuntimeException: javax.management.InstanceAlreadyExistsException: persistence.units:jar=tutorialEstudiante.jar,unitName=Estudiante already registered.


The curious is that the Beans are stored in memory by the stateful, but when I try to the the database the table and the Beans doesn't appear.

Thanks.

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