CLONE - Variable in application configuration should have a unique name

The variables in application configuration should be unique. However, it appears that if an INSERT is done in database (as example, during a SQL script update), variables can be duplicated.

Constraint UNIQUE is missing on the column variable of the table app_configuration. A script SQL should be added to the ear to update the database and add the constraint. And an annotation @Column(unique=true) should be added to the property 'variable' for future deployement.

This depends on the project proxy (jboss5)