Red Hat Linux8 , Jbo3.2 , Oracle 9i, Java 1.4.2

When I installed a EJB application to the Jboss3.2, it was no error or warning when start Jboss, but the application could not run correctly, it cannot login.

Here are the messages appear in the Jboss server side

2004-11-11 11:13:54,135
DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCFindByQuery.UsersEJB#findByLogin_name]
Executing SQL: SELECT user_id FROM USERSEJB WHERE login_name=?

2004-11-11 11:13:54,136
DEBUG [org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory]
Using properties: {user=edu ,password=--hidden--}

2004-11-11 11:13:54,787
INFO [STDOUT] admin01:abcde -> -4

edu is Oracle 9i loginname,
admin01 / abcde are EJB application loginname and password:

Please help me , Thanks

Here are some files I think maybe relate to the problem

ejb-jar.xml

<enterprise-beans>

Users
<ejb-name>UsersEJB</ejb-name>
com.edu.entity.users.UsersHome
com.edu.entity.users.Users
<ejb-class>com.edu.entity.users.UsersBean</ejb-class>z
<persistence-type>Container</persistence-type>
<prim-key-class>com.edu.entity.users.UsersPK</prim-key-class>
False
<cmp-version>1.x</cmp-version>
<abstract-schema-name>Users</abstract-schema-name>
<cmp-field><field-name>user_id</field-name></cmp-field>
<cmp-field><field-name>login_name</field-name></cmp-field>



</enterprise-beans>
<assembly-descriptor>

<container-transaction>

<ejb-name>UsersEJB</ejb-name>
<method-name>*</method-name>

<trans-attribute>Required</trans-attribute>
</container-transaction>

</assembly-descriptor>


jaws.xml


findByLogin_name
LOGIN_NAME = {0}

<read-ahead>true</read-ahead>


jboss.xml

<ejb-name>UsersEJB</ejb-name>
<jndi-name>UsersHome</jndi-name>