Got stuck into something and considered it interesting to keep a note of. If you are a J2EE developer and using Oracle Application server (OC4J) then the following information may be useful.
In OC4J if you have user created threads (not implicit threads of Servlet etc) and you want to do a JNDI lookup in that thread, then an OC4J start-up option needs to be set, otherwise the lookup would fail. The option is "-userThreads" and can be set using EM console (OC4J -> Administration -> Server Properties -> Start-parameters: OC4J Options).
Here is the detail of all such available OC4J options.
