How would we set environment variables in Sun Webserver 7

I'm curious to find out how we can set environment variables in the Sun Webserver 7. As an example, if I had an application in Tomcat, I would be able to set these variables in the abc.xml configuration file under /conf/Catalina/localhost/. In the file I would have a variable for the application set as . I have looked through the documentation of the webserver but have not found anything relevant. The closest thing I came across was a way to set some variables which could only be used by the obj.conf file or something.

The reason I need this is because I'm trying to store my overall environment specific data in the database but need a value external to the application ideally (so as to preserve a single build concept) that would identify the application uniquely if it has multiple instances where each instance's properties might differ.

Thanks for any advice.