[jbpm-dev] multiple workflows in jbpm engine

Hi , I am using jbpm 4.3 on tomcat 6.0.29.1 , i run multiple workflows on the same jbpm engine. Recently i found that some node in one of the workflow was corrupting memory, due to this tomcat and all the other workflow was crashing. I wish to know if there is a secure way to run jbpm workflow on a separate process , so that it doesnt' bring down the entire setup. thanks Murali