#1 java.lang.OutOfMemoryError on model upload

[Joshua Shinavier]

I deployed the WAR on two different Linux machines (one
FC4, one Ubuntu Dapper) running Tomcat 5.5. The
message "Building Tree view..." on the index page never
went away, so I went ahead and tried to upload a model
(alternately, http://xmlns.com/foaf/0.1/index.rdf and
the -- tiny -- animals.rdf in the source). Each time I
encountered an error dialog with the message:

Exception occured: java.lang.OutOfMemoryError: Java
heap space, message: Java heap space

Apart from this same message in my catalina.out, I
didn't find any logging to help me understand the problem.