If your root or /tmp filesystem is filling with Heapdump* files, you may wish to disable the java dump functionality.
Open the /u2/eclipse/modules-conf/jboss.conf file and disable the dump options as shown in the example below:
JAVA_OPTS="-server -Dfile.encoding=ISO-8859-1 -Xdisablejavadump -Xdump:none -Xms1024m -Xmx1024m -XX:MaxPermSize=256m -XX:PermSize=256m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000"
References: