Data source no JBoss 4.2.2 GA [RESOLVIDO]

<?xml version="1.0" encoding="UTF-8"?>
<datasources>
  <local-tx-datasource>
    <jndi-name>jdbc/NOME</jndi-name>
    <use-java-context>true</use-java-context>
    <connection-url>jdbc:db2:MEUDB</connection-url>
    <driver-class>COM.ibm.db2.jdbc.app.DB2Driver</driver-class>
    <transaction-isolation>TRANSACTION_READ_UNCOMMITTED</transaction-isolation>
    <user-name>db2inst1</user-name>
    <password>cmsoftware</password>
    <min-pool-size>0</min-pool-size>
    <!-- sql to call when connection is created -->
    <new-connection-sql>select count(*) from mensagem</new-connection-sql>

    <!-- sql to call on an existing pooled connection when it is obtained from pool -->
    <check-valid-connection-sql>select count(*) from mensagem</check-valid-connection-sql>

      <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->
    <metadata>
        <type-mapping>DB2</type-mapping>
    </metadata>
  </local-tx-datasource>  
</datasources>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  
   <!-- =========== DATASOURCE ============= -->   
  <resource-ref>
  	<res-ref-name>jdbc/NOME</res-ref-name>
  	<res-type>javax.sql.DataSource</res-type>
  	<res-auth>Container</res-auth>
  </resource-ref>
  <!-- =========== DATASOURCE ============= --> 
  
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<jboss-web>
 <resource-ref>
   <res-ref-name>jdbc/NOME</res-ref-name>
   <jndi-name>java:/jdbc/NOME</jndi-name>
 </resource-ref>
</jboss-web>

public class ConnectionFactory {

	// Log
	private static final Logger log = Logger.getLogger(ConnectionFactory.class);
	
	// JNDI
	public static final String JNDI_NOME = "java:comp/env/jdbc/NOME";
	
	public static Connection getDB2Connection() throws ConnectionFactoryException {
		return getDB2Connection(JNDI_NOME);
	}


	/**
	 * Fornece uma conexão obtida através de um Datasource
	 * @param jndiName
	 * @return Conexão com a base de dados
	 * @throws ConnectionFactoryException
	 */
	public static Connection getDB2Connection(String jndiName)
		throws ConnectionFactoryException {

		Context ctx;
		DataSource ds;
	
		try {
			 ctx = new InitialContext();
			 ds = (DataSource) ctx.lookup(jndiName);    // AQUI ESTA ME RETORNANDO NULL
		} catch (Exception e) {
			log.error(null, e);
			throw new ConnectionFactoryException(e.getMessage());
		}

		Connection conn;

		try {
			conn = ds.getConnection();
		} catch (SQLException e) {
			log.error(null, e);
			throw new ConnectionFactoryException("Erro de conexão com o Banco de Dados");
		}

		try {
			DatabaseMetaData dma = conn.getMetaData();
			log.debug("Conectado a " + dma.getURL() + " usando " + conn.hashCode());
		} catch (Exception e) {}

		return conn;

	}
}