Cannot load JDBC driver class 'null'

[Ben Anderson]

Ok, I know this topic has been posted many times, but I can't find anything 
to help.

I have OracleDriver in [$CATALINA_HOME]/common/lib
here's my server.xml
<GlobalNamingResources>
......................
<Resource name="myDS" scope="Shareable" type="javax.sql.DataSource" 
auth="Container"/>
   <ResourceParams name="myDS">
     <parameter>
       <name>validationQuery</name>
       <value>select user from dual;</value>
     </parameter>
     <parameter>
       <name>url</name>
       <value>jdbc:oracle:thin:myMachine:1521:myDBName</value>
     </parameter>
     <parameter>
       <name>username</name>
       <value>hris</value>
     </parameter>
     <parameter>
       <name>password</name>
       <value>****</value>
     </parameter>
     <parameter>
       <name>maxActive</name>
       <value>4</value>
     </parameter>
     <parameter>
       <name>maxWait</name>
       <value>5000</value>
     </parameter>
     <parameter>
       <name>driverClassName</name>
       <value>oracle.jdbc.driver.OracleDriver</value>
     </parameter>
     <parameter>
       <name>maxIdle</name>
       <value>2</value>
     </parameter>
   </ResourceParams>
 </GlobalNamingResources>

and my web.xml:

   <resource-ref>
       <res-ref-name>jdbc/fsaDS</res-ref-name>
       <res-type>javax.sql.DataSource</res-type>
       <res-auth>Container</res-auth>
       <res-sharing-scope>Shareable</res-sharing-scope>
   </resource-ref>
in the administrative tool:
the top level Resources->DataSources looks ok as MyDS is listed there
but the /my_context->Resources->Datasources gives:
org.apache.jasper.JasperException: Exception retrieving attribute 
'driverClassName'

and the localhost_log.xxx.txt (when it tries to use myDS):
java.sql.SQLException: Cannot load JDBC driver class 'null
Any help would be great - I've been trying everything - reloading with 
different configurations about 50 times - looking through books, mailing 
lists/archives.
Thanks,
Ben

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