Error while accessing to Oracle 10g from app in JBoss EAP 6

I'm developing a simple aplication that must have access to an Oracle 10g DB and that is running under a JBoss EAP 6.1.0 server. I have followed the steps given on the official guide in order to install the Oracle driver.

So currently, I have the following config files. I added folder jboss-eap-6.1\modules\com\oracle\db\main with ojdbc6.jar and module.xml, with content:

<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.1" name="com.oracle.db">
  <resources>
    <resource-root path="ojdbc6.jar"/>
  </resources>
  <dependencies>
    <module name="javax.api"/>
    <module name="javax.transaction.api"/>
  </dependencies>
</module>

In jboss-eap-6.1\standalone\configuration\standalone.xml I added the following lines in the datasources node:

        <datasource jndi-name="java:/jdbc/OracleDS" pool-name="OracleDS" enabled="true" use-java-context="true">
            <connection-url>jdbc:oracle:thin:@10.0.6.0:1521:ORC1;DB_CLOSE_DELAY=-1</connection-url>
            <driver>oracle</driver>
            <security>
                <user-name>a</user-name>
                <password>a</password>
            </security>
        </datasource>
        <drivers>
            <driver name="oracle" module="com.oracle.db">
                <datasource-class>oracle.jdbc.driver.OracleDriver</datasource-class>
            </driver>
        </drivers>

And finally, in my Java code I create the connection with:

InitialContext initContext = new InitialContext();
DataSource ds = (DataSource)initContext.lookup("java:/jdbc/OracleDS");
conexion = ds.getConnection();

While executing this, it gives me an error on the line conexion = ds.getConnection():

javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/jdbc/OracleDS

I've been looking for a possible solution on the net with no success. Any idea?