One way is to follow Pete, Alex, Tom and many others and follow their advice. Here is a simpler way, it relies on end user trust http://thedailywtf.com/Articles/Out-of-Service.aspx#pic4 , by explicitly stating banned words. This is one up from classic bobby Tables<http://xkcd.com/327/> . Raj -- //www.freelists.org/webpage/oracle-l