<property name="hibernate.connection.datasource">java:/comp/env/jdbc/NOME_DB</property>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
<property name="hibernate.connection.datasource">java:/comp/env/jdbc/NOME_DB</property>
    <property name="connection.autoReconnect">true</property>
    <property name="connection.autoReconnectForPools">true</property>
    <property name="connection.is-connection-validation-required">true</property>
    <property name="current_session_context_class">thread</property>
    <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
    <property name="show_sql">false</property>
    <property name="hibernate.cglib.use_reflection_optimizer">false</property>
    <property name="c3p0.acquire_increment">1</property> 
    <property name="c3p0.idle_test_period">100</property> 
    <property name="c3p0.max_size">100</property> 
    <property name="c3p0.max_statements">0</property> 
    <property name="c3p0.min_size">10</property> 
    <property name="c3p0.timeout">100</property>      <property name="hbm2ddl.auto">update</property>
    <mapping resource="...." />
    <mapping resource="..
..
.
.
  </session-factory>
</hibernate-configuration> 

    <Resource name="jdbc/NOME_DB" auth="Container"
            type="javax.sql.DataSource" username="user" password="pass"
            driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost/NOME_DB?autoReconnect=true"
            maxActive="8" maxIdle="4" />

<?xml version="1.0" encoding="UTF-8"?>
<Context path="/beta">
    <Resource name="jdbc/zattix_db" auth="Container"
            type="javax.sql.DataSource" username="NOME_DB" password="PASSWORD"
            driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost/NOME_DB?autoReconnect=true"
            maxActive="8" maxIdle="4" />
</Context>

    <resource-ref>
        <res-ref-name>jdbc/zattix_db</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>