In effetti ho postato poche info ...

1) Il DBMS usato è MSSQL server
2) Come Persistence provider uso eclipse link 2.3.0 (se non ricordo male)
3) ...
4)Il Jar lo eseguo direttamente nella cartella che netbeans crea dove c'è anche la cartella lib con tutte le librerire necessarie


<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persisten...stence_2_0.xsd">
<persistence-unit name="RaySoftPU" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceP rovider</provider>
<class>bean.Agenzia</class>
<class>bean.Utente</class>
<class>bean.Servizio</class>
<class>bean.Contatti</class>
<class>bean.Connessione</class>
<class>bean.exceptions.Utente</class>
<class>bean.exceptions.Contatti</class>
<class>bean.exceptions.Connessione</class>
<class>bean.exceptions.Servizio</class>
<class>bean.exceptions.Agenzia</class>
<class>bean.Comuni</class>
<class>gui.GestioneNew</class>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:sqlserver://xx.xx.xx.xx\xxxxx:xxxx;databaseName=servizio"/>
<property name="javax.persistence.jdbc.password" value="xxxxx"/>
<property name="javax.persistence.jdbc.driver" value="com.microsoft.sqlserver.jdbc.SQLServerDrive r"/>
<property name="javax.persistence.jdbc.user" value="xx"/>
</properties>
</persistence-unit>
</persistence>