I find some trouble when using BOTH the 500 error thing AND an exception class thing in the DDs at the same time. If I only do one or the other, I get better results.
Overall, I am having lots of trouble getting the <error-page> stuff to work as advertised. Between using some <error-page> stuff and some JSP page directives, I get a variety of results and cannot really explain with certainty why I'm getting what I'm getting.
Currently, I am doing the 100 million experiments required to figure it out. I'll post what I find.
Thnx for your answer.
I did not have the opportunity to continue testing this feature. But I will have soon and will post my answers too.
Right now I am able to redirect all errors to the same page, except when the session times out, in which case I have a server error page. No idea why it behaves like this...
Have a look at the topic I posted late last night. It explains my problem and may shed some light on yours as it encompasses the majority of what I have learned while experimenting.