[xwiki-users] monitor XWiki

Hi everybody , I have deployed my XWiki (version 3.5.1) with Tomcat and I have currently a big problem : Tomcat crashes weekly and I can't find the origin of the problem. I have searched a solution inside Tomcat's log but there is nothing useful I could use to solve this. So I tried to use javamelody in order to monitor my XWiki instance (http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Monitoring). I can have useful information with this tool, however when my Tomcat crashes, I loose registered datas of java melody and so I can't know the situation just before the crash. So this is my question : is it possible to keep javamelody's data even after a crash ? Thanks! Regards, Pierrick