SocketTimeoutException while using DatabaseServerLoginModule

[diripu]

Getting the following exception in the client side while accessing a
stateless bean.And using the DatabaseServerLoginModule for authentication.

Any comments ??

javax.security.auth.login.LoginException: javax.naming.CommunicationException: R
eceive timed out [Root exception is java.net.SocketTimeoutException: Receive tim
ed out]
 at org.jboss.security.auth.spi.DatabaseServerLoginModule.getUsersPasswor
d(DatabaseServerLoginModule.java:110)
 at org.jboss.security.auth.spi.UsernamePasswordLoginModule.login(Usernam
ePasswordLoginModule.java:156)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at javax.security.auth.login.LoginContext.invoke(Unknown Source)
 at javax.security.auth.login.LoginContext.access$000(Unknown Source)
 at javax.security.auth.login.LoginContext$4.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at javax.security.auth.login.LoginContext.invokeModule(Unknown Source)
 at javax.security.auth.login.LoginContext.login(Unknown Source)
 at SjJBossExecQuery.run(SjJBossExecQuery.java:115)

Am using Hypersonic database.
My ejb-jar.xml is as follows:

<ejb-jar >

 <description><![CDATA[No Description.]]></description>
 <display-name>Generated by XDoclet</display-name>

 <enterprise-beans>

 <!-- Session Beans -->
 <session >
 <description><![CDATA[Management Session Bean to enable the client to manage the server its is deployed on.]]></description>
 <display-name>JBoss Management EJB (MEJB)</display-name>

 <ejb-name>MEJB</ejb-name>

 <home>javax.management.j2ee.ManagementHome</home>
 <remote>org.jboss.management.mejb.MEJB</remote>
 <ejb-class>org.jboss.management.mejb.MEJBSession</ejb-class>
 <session-type>Stateless</session-type>
 <transaction-type>Container</transaction-type>
 <resource-ref>
 <description>The default DS</description>
 <res-ref-name>jdbc/DefaultDS</res-ref-name>
 <res-type>javax.sql.DataSource</res-type>
 <res-auth>Container</res-auth>
 </resource-ref>

 <security-identity>
 <run-as>
 <role-name>JBossAdmin</role-name>
 </run-as>
 </security-identity>


 <env-entry>
 <description><![CDATA[JNDI-Name of the MBeanServer to be used to look it up. If 'null' the first of all listed local MBeanServer is taken]]></description>
 <env-entry-name>Server-Name</env-entry-name>
 <env-entry-type>java.lang.String</env-entry-type>
 <env-entry-value><![CDATA[null]]></env-entry-value>
 </env-entry>

 </session>

 <!--
 To add session beans that you have deployment descriptor info for, add
 a file to your XDoclet merge directory called session-beans.xml that contains
 the <session></session> markup for those beans.
 -->

 <!-- Entity Beans -->
 <!--
 To add entity beans that you have deployment descriptor info for, add
 a file to your XDoclet merge directory called entity-beans.xml that contains
 the <entity></entity> markup for those beans.
 -->

 </enterprise-beans>

 <!-- Assembly Descriptor -->
 <assembly-descriptor >
 <!--
 To add additional assembly descriptor info here, add a file to your
 XDoclet merge directory called assembly-descriptor.xml that contains
 the <assembly-descriptor></assembly-descriptor> markup.
 -->

 <!-- finder permissions -->

 <security-role>
 <role-name>JBossAdmin</role-name>
 </security-role>

 <!-- transactions -->
 <container-transaction >
 <method >
 <ejb-name>MEJB</ejb-name>
 <method-name>*</method-name>
 </method>
 <trans-attribute>Supports</trans-attribute>
 </container-transaction>

 <!-- finder transactions -->
 <method-permission>
 <role-name>JBossAdmin</role-name>
 <method>
 <ejb-name>MEJB</ejb-name>
 <method-name>*</method-name>
 </method>
</method-permission>
 </assembly-descriptor>


</ejb-jar>

And My Jboss.xml file is :

<jboss>
<security-domain>java:/jaas/DKP</security-domain>
 <enterprise-beans>

 <!--
 To add beans that you have deployment descriptor info for, add
 a file to your XDoclet merge directory called jboss-beans.xml that contains
 the <session></session>, <entity></entity> and <message-driven></message-driven>
 markup for those beans.
 -->

 <session>
 <ejb-name>MEJB</ejb-name>
 <jndi-name>ejb/mgmt/MEJB</jndi-name>
 <local-jndi-name>MEJBLocal</local-jndi-name>
 <resource-ref>
 <res-ref-name>jdbc/DefaultDS</res-ref-name>
 <jndi-name>java:/DefaultDS</jndi-name>
 </resource-ref>


 </session>

 </enterprise-beans>

 <resource-managers>
 </resource-managers>

</jboss>

And my client code is :

Properties props = new Properties();
 props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
 props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
 props.put(Context.PROVIDER_URL, str[1]);

 try {
 System.out.println("Before LoginContext");
 //*javax.security.auth.login.LoginContext context1 = new javax.security.auth.login.LoginContext("dilip");
 AppCallbackHandler handler = new AppCallbackHandler(str[2], str[3].toCharArray());
 javax.security.auth.login.LoginContext lc = new javax.security.auth.login.LoginContext("dilipkumar", handler);
 System.out.println("Created LoginContext");
 lc.login();

 InitialContext context = new InitialContext(props);

 Object obj = context.lookup( "ejb/mgmt/MEJB" );
 ManagementHome home = (ManagementHome) PortableRemoteObject.narrow(obj,ManagementHome.class);
 server = home.create();