I think we've got something very close to what you're looking for.
logFaces is a log server, aggregator and viewer. It's built particularly for larger distributed applications and multi-user environments. We put together all the good stuff from Apache logging services and made out-of-the-box solution for those who use log4j, log4net, log4cxx or event log4python. logFaces can work with major database brands and will let you quickly dig out the issues from the flood of log data which is very common in large applications. It will also let you see the slices of your system (log-wise) in real-time. There are many more features, feel free to give it a try. If you like I can help you with setup directly, although it's very simple to get started just after watching the demos we have.
Disclosure: I am the author of this product.
