JBOSS session timeout

JBOSS session timeout is specified in $JBOSS_HOME/server/production/deployers/jbossweb.deployer/web.xml.
   <session-config>
      <session-timeout>30</session-timeout>
   </session-config>

The default session timeout in JBOSS is 30 minutes.

JBOSS transaction timeout

Transaction timeout is set in $JBOSS_HOME/server/production/deploy/transaction-jboss-beans.xml
 <property name="transactionTimeout">300</property>

Java Heap Dump

Take java  heap dump using this command in 64 bit server:

jmap -J-d64 -dump:format=b,file=/opt/jbosslogs/heap.hprof $java_pid