Hi, I stumbled across a problem where my server stop responding to new http connections. After inpecting logs if found an error message in tomcat logs [SEVERE: Protocol handler pause failed java.net.SocketException: Network is unreachable]. I did some investigation on my linux server logs and found that there was simultaneous TCP connection limit (512) which got exceeded. This is third time in a week I encountered this problem. Everytime I have to restart my server machine.
I am using Tomcat 5, java 5.0, on linux machine (Fedora 5) . In addition to that I am using HSQLDB (embeded in my web application). I am not gonna blame tomcat for this. I believe there is something wrong with my In-Memory database(which sarted as client/server mode ) when web-app starts. I have 2 applications deployed under tomcat, app A contains HSQLDB exposed at a socket, app B connect to HSQLDB throgh tcp connection. I want to spot the area where my tcp connections got open and not close. Any suggestion? Any profiling tool who could help me ? Thanks, -Azhar
