<persistence-unit name="meusistema" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
  <property name="javax.persistence.jdbc.url" value="jdbc:postgresql://...:5432/..."/>
  <property name="javax.persistence.jdbc.user" value="postgres"/>
  <property name="javax.persistence.jdbc.password" value="root"/>
  <property name="javax.persistence.jdbc.driver" value="org.postgresql.Driver"/>
  <property name="hibernate.show_sql" value="true"/>
  <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>


  <property name="hibernate.hbm2ddl.auto" value="update"/>

</properties>