AIX 5.3.05.02, java 1.3.1

We have an oracle hr application that still requires java 1.3.1 and it
occasionally
crashes and fills up /tmp with heapdump and javacore files. Is there
a way to
re-direct these files to some place other than /tmp? Or perhaps turn
them off
altogether? I'm not trying to solve why it dumps, just where they are
directed to.

Thanks,

Ron