Some Oracle tables will not return results until you set the context.
See what sessions you have
[geshifilter-]select * from fnd_sessions where session_id=userenv('sessionid')[/geshifilter-]
Create a session
[geshifilter-]delete from fnd_sessions where session_id=userenv('sessionid'); insert into fnd_sessions (session_id, effective_date) values(userenv('sessionid'),sysdate); commit;[/geshifilter-]
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Quick Reference