Re: Running Pixory under jboss-3.2.5_tomcat-5.0.26 - NoClassDefFoundError

Classloading issues account for about 90% of all weirdness I have
personally seen with respect to app servers. The policies for
classloading can vary from vendor to vendor (especially with older app
servers), and the System Properties and app server configuration
values that control classloading aren't standardized across different
platforms.

I've actually seen a similar looking problem before, though that
doesn't mean it necessarily has the same root cause as yours. On
WebSphere 4.x, in certain environments, I get a lot of 
NoClassDefFound for a class that I *know* is on the classpath. When
WebPhere is recycled the problem goes away. In my case it was even a
little stranger, because the app would initially work properly, but
would experience the NoClassDefFound Error after a few successful
request; and the class it couldn't find must have been loaded for the
app to have worked in the first place. So we concluded that WebSphere
was *unloading* the class in response to a low memory condition.

YMMV

joe


--- In [email protected], contact@a... wrote:
> Joe:
> 
> It's a stock JBoss 3.2.5 installation.  However, I have since 
> resolved the problem by simply restarting JBoss.  I don't 
> typically restart my container for any other deployments (as I 
> hot deploy into my container which is up 24x7).  However, in 
> this case I rebooted the container and all worked.  Any ideas 
> why this would be as it was surely unexpected for me?
> 
> Thanks.
> 






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