how to add subdomains dynamically, virtual hosts config

hello, My current configuration is working perfectly: tomcat 6.0 apache 2.0.55 jk connector virtual hosts My web server has multiple websites, something like this: www.mydom1.com www.mydom2.com www.mydom3.com Now I would like to add the ability to issue subdomains in large numbers, for a

Tomcat 6 NoClassDefFoundError: oracle/jdbc/pool/OracleDataSource

like this: What configuration chances may be needed for an upgrade to Tomcat 6? Any suggestions are greatly appreciated. Best regards, Logan Scott