I'm using Hibernate 3.1rc and Apache Tomat 5.5.12. For whatever reason, when my application throws an exception, it isn't showing up in the Tomcat logs. I reinstalled Java and Tomcat, but it isn't helping. Does anyone have some ideas of what I should look at? I've never seen anything like this before.

Thanks

Ah, problem solved. I had log4j in my classpath. Apache Commons logging was detecting that and therefore all the exceptions were being shipped off to log4j. log4j wasn't configured so it was basically dropping everything (as it should).

I took log4j out of the classpath and all is well.

Logging in Java is a mess, what with log4j, Commons Logging and Java's native logging. I forget who said it, but someone said, "The great thing about standards is there are so many to choose from."

Logging is great but the configuration of logging itself can be hard to debug.

I agree with that. I always find problems configuring Log4J.

I think I'll write a skeleton project set-up where all the libs and configurations are written and logging is set up and classpath and ant and all the other gotchas are configured. Suppose the more generic I make it the more configuration will be required each time I use it in a new project. ;)