I am using Tomcat 7 web server to host/deploy my web app. The app is running fine without any issues. But only some times (means having probability of 1% only), the server hangs up without any reason. I have allocated it enough memory to JVM/Tomcat. Also I can't see any logs since app is not able to write log file because of it doesn't respond. I have checked the max no of connections to DB and they are also not exceeding the limit.
How can I find the cause for this ? I need to restart server to resolve this... Please help.. Thanks in advance..