Does anybody know any details about the frontend OC4J standalone uses? Is it a lightweight apache version? We're building a web application and be would like to be sure that OC4J webserver can sustain many simultaneous hits, as much as an apache web server
Oracle bought the orion application server and converted it into OC4J.
WRT no of users, I have been having resonable experience with multiple no of users[5-10].
If you are using older versions of OC4J, you can launch console using the "-console" command in the JVM arguments. If gives you a GUI of the application server.
Best place to check out more stuff will be OTN site. Look for OC4J documentation.