How to make James work with Oracle database?

[John Wang]

I am having problem with using oracle repository, I have created a db datasource as 
below:
        <data-source name="maildb"
                     class="org.apache.avalon.excalibur.datasource.JdbcDataSource">
         <driver>oracle.jdbc.driver.OracleDriver</driver>
         <dburl>jdbc:oracle:thin:@JWANG:1521:JWANG</dburl>
         <user>system</user>
         <password>manager</password>
        </data-source>


and then I set up the inbox repository,
      <inboxRepository>
        <repository destinationURL="db://maildb/inbox/"
                    type="MAIL">
        </repository>
      </inboxRepository>

and I have also setup the db repository for users and list, 

I have created the tables by myself, including inbox,users,lists tables,

I have also put classes12.jar (oracle jdbc driver) into the lib directory,

When I started the james, it hanged there, no error messages, no log coming out, the 
only message I saw is:

"Phoenix 3.1a1-dev"

What is going on? Can anyone help me?
Thanks very much!
John W