Undeploy doesn't work when using datasource.

[clovistrf]

I'm using Hibernate 3.1 with Oracle 9i running on JBoss 4.0.3 SP1.
When I create a SessionFactory with datasource the undeploy doesn't work fine. The PermGen space is not released. Any idea? (Sorry about the English)

<?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>

 <!-- Database connection settings -->
 <property name="hibernate.connection.datasource">java:AplicacoesApoioDS</property>

 <!-- JDBC connection pool (use the built-in) -->
 <property name="connection.pool_size">1</property>

 <!-- SQL dialect -->
 <property name="dialect">org.hibernate.dialect.OracleDialect</property>
 <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
 <property name="show_sql">true</property>

 <mapping resource="/br/gov/trf1/aplicacoesapoio/calendario/model/Feriado.hbm.xml"/>
 <mapping resource="/br/gov/trf1/aplicacoesapoio/calendario/model/HistoricoFeriado.hbm.xml"/>

 </session-factory>
</hibernate-configuration>

<datasources>
 <local-tx-datasource>
 <jndi-name>AplicacoesApoioDS</jndi-name>
 <connection-url>jdbc:oracle:oci:@xxx</connection-url>
 <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
 <user-name>xxx</user-name>
 <password>xxx</password>
 <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker</valid-connection-checker-class-name>
 <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>
 <idle-timeout-minutes>1</idle-timeout-minutes>
 </local-tx-datasource>

</datasources>

[weston.price]

Please see:

http://wiki.jboss.org/wiki/Wiki.jsp?page=DynamicallyChangeADatasourceWithRestartingOrRedeployingApplicationsDependentOnIt

[clovistrf]

Tried using DataSourceDelegator to create a weaker reference from application to DataSource but nothing changed.

 <mbean code="org.jboss.varia.dsdelegator.DataSourceDelegator" name="jboss.varia:name=DataSourceDelegator">
 <depends>jboss.jca:service=DataSourceBinding,name=AplicacoesApoioDSTeste</depends>
 <attribute name="TargetName">java:AplicacoesApoioDSTeste</attribute>
 <attribute name="BindName">java:AplicacoesApoioDS</attribute>
 </mbean>

Still having same problem. Jboss isn't releasing memory. I used JConsole to monitor PermGen and have the following image.

http://img287.imageshack.us/my.php?image=memoriain5.jpg

Before deploy JBoss was using about 11.200k, after deploy memory used was 17.890k. Undeploy and garbage collection released almost anything from server.