Visual Age and Weblogic are very compatible. They have a weblogic intergration kit that you can pull into weblogic and actually start up weblogic from within visual age. Then you can put breakpoints in your code and debug if you want to. Also, they have a new release of the development kit out that actually lets you debug ejb's from within visual age. I've got it at the office but haven't integrated it yet. I think I found all of the information on the weblogic web site.