How to debug "trying to validate a RegionSite already disabled"?

In our existing JDev 11 g application development we now strongly use bounded task flows, Fragments, and regions for their full effect. However, from time to time we make mistakes, and we receive our accident of demand with the following error:

"java.lang.IllegalStateException: trying to validate a RegionSite already not valid:
(more long no useful error stack)

Well, so we did something wrong with one of the regions in the page current, fair enough, and there is what we need to fix. If we know that we just changed it is easy, but if the error occurs much later, or after many changes, it can be difficult to reverse/isolate. In turn that the problem with this error is that it is so generic, he swallows the Java error stack, it gives absolutely no help why the problem occurred, what region is a failure, that BTF fails etc etc.

From my point of view I normally starts down the hacking into the code, commenting out pieces (in a div in mode 2) until I can locate the problem. For beginners, however, having little experience as part of the ADF, this message is a killer because it offers no assistance.

The an of other senior developers on this forum have generic suggestions, we can give beginners how to diagnose the real problem? Are there techniques that someone uses in order to reveal the real problem quickly and succinctly? Is there something maybe I missed pressing the real problem?

Popular opinion.

CM.

Chris, you're welcome :-)

http://download.Oracle.com/docs/CD/E17904_01/Web.1111/b31974/web_testdebug.htm#BABDBCGF

That's exactly the document I used to enable logging.

Timo

Tags: Java

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