JNDI lookup() for sql server jdbc datasource returns null

Question

Hi,
I am trying to use a jdbc datasource in tomcat 5 to access a sql server 2000 database. I had many common problems and did found an answer to them in the forums but I'm having one last (I hope) problem. My program is also using a mySQL datasource and it works fine.
The problem is that my lookup returns null. No exception, just null. It seems that many people had this problem but I didn't found any answer to it.
This is the lookup code:
    Context ctx = new InitialContext();
    Context envCtx = (Context)ctx.lookup("java:comp/env");
    axaptaDS = (DataSource) envCtx.lookup("jdbc/axapta"); //returns null :(This my context.xml config:
<ResourceParams name="jdbc/axapta">
    <parameter>
      <name>factory</name>
      <value>com.microsoft.jdbcx.sqlserver.SQLServerDataSourceFactory</value>
    </parameter>
    <parameter>
      <name>url</name>
      <value>jdbc:microsoft:sqlserver://hostname:1433</value>
    </parameter>
    <parameter>
      <name>password</name>
      <value>password</value>
    </parameter>
    <parameter>
      <name>maxActive</name>
      <value>4</value>
    </parameter>
    <parameter>
      <name>maxWait</name>
      <value>5000</value>
    </parameter>
    <parameter>
      <name>driverClassName</name>
      <value>com.microsoft.jdbcx.sqlserver.SQLServerDataSource</value>
    </parameter>
    <parameter>
      <name>username</name>
      <value>username</value>
    </parameter>
    <parameter>
      <name>maxIdle</name>
      <value>2</value>
    </parameter>
  </ResourceParams>And I also put these lines in my web.xml file:
<resource-ref id="ResourceRef_1092254277306">
     <res-ref-name>jdbc/axapta</res-ref-name>
     <res-type>javax.sql.DataSource</res-type>
     <res-auth>Container</res-auth>
     <res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>Thanks for helping!

Answer 1

I finally found a remedy to this problem:
specify this driver instead and remove the entry about the factory in the context's .xml file:
com.microsoft.jdbc.sqlserver.SQLServerDriver