You must have configured a Database. The jndi name used in the bean is jdbc_1. See Section 4.1.3 Database Access in this tutorial or the Configuring Database Service section of the Red Hat Application Server User Guide.
You do not have to create the database (table), it will be done by the application (the first time you launch the JOnAS server you will see an exception saying that the table does not exist; do not worry about this—it is a normal behaviour—the table will be created just after).