Hi all, I am also facing an issue with tomcat 4.1.30 on RHEL 3.0. After few days my server doesnot respond to any request. When i check the process id, it is running. But when i try to shutdown the tomcat , it doesnot stop. the process id still exists So i kill -9 the PID and the start the tomcat. earlier i thought it was issue related kernel threading so add a export LD_KERNEL parameter int eh catalina.sh. But this problem still eists. I have 2 tomcats running in loadbalacing in the production environment . my tomcat donot make any direct database connections. we have another layer of application server which makes database calls. My tomcat only servers JSP ,servlets. I have an Apache-tomcat-WAS-DB setup. regards, Santosh