hibernate.cfg.xml for PostgreSQL

hibernate.cfg.xml

<!--
  ~ Hibernate, Relational Persistence for Idiomatic Java
  ~
  ~ License: GNU Lesser General Public License (LGPL), version 2.1 or later.
  ~ See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
  -->
<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
	<session-factory>
	
   		<property name="connection.url">jdbc:postgresql://localhost/myDBName</property> <!-- BD Mane -->
   		<property name="connection.driver_class">org.postgresql.Driver</property> <!-- DB Driver -->
   		<property name="connection.username">postgres</property> <!-- DB User -->
   		<property name="connection.password">12345</property> <!-- DB Password -->
   		
   		<property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property> <!-- DB Dialect -->
   		<property name="hbm2ddl.auto">update</property> <!-- create / create-drop / update -->
		
		<property name="show_sql">true</property> <!-- Show SQL in console -->
		<property name="format_sql">true</property> <!-- Show SQL formatted -->
		
		<mapping class="beans.Task"/>
		
	</session-factory>
</hibernate-configuration>

Hello, could you happen to know how to configure 2 or more databases in one cfg.xml file and and respectively in one session?

Thanks for you