How to find out the type of application Server at Runtime

Hi,
    Is there a way to find out the type of application server
for example: Weblogic, JBOSS or Web Server, at runtime from code ?

    Some sort of Application Server Metadata will help.

    I am adding LOB support for Application Server. As the
weblogic needs special JDBC Oralce extension for Oralce Thin driver (for
retrieving LOB) , I need
to cast the proper class at run time for different application Servers.

   Any suggestions ?

   Also, an related question: Does JBOSS or WebSphere need JDBC extensions
for Oracle Thin Driver ?
   Some example or some pointers are appreciated


Thanks

Chester

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