On 27/07/2010 11:52, VERES ZOLTAN wrote: > Hi All, > > I have a serious problem with tomcat on linux. > Tomcat often stops with the error "Connection refused".
Does the process actually terminate? Or when you write "stops" do you mean "stops accepting connections". > Clients can not connect to the server and even the tomcat default page can > not be displayed. > When this error occurs, one of the following two JAVA processes has 200% CPU > load. > But I'm not sure this causes the problem. > > /usr/java/jre1.6.0_10/bin/java > -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager. > > /usr/java/jre1.6.0_10/bin/java > -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties. Are those really two separate processes? That would suggest multiple Tomcat instances. > If I terminate the JAVA process listed above with kill -9, and restart Tomcat > with catalina.sh start, it works again for a while. After 10 minutes, it > stops again, but this working period can be hours. Don't do that. When the problem occurs, take 3 thread dumps, each 10 seconds apart and compare them. That will tell you what the Tomcat instance is doing. > I have found the following log items in catalina.log: > But there is no other program listening on TC port 8181... > > 2010.07.23. 12:35:26 org.apache.coyote.http11.Http11Protocol init > SEVERE: Error initializing endpoint > java.net.BindException: Address already in use<null>:8181 That suggests a Tomcat process that has not been fully shutdown is still running. > Is it possible, that I have to increase the "maxThreads" or "acceptCount" > tomcat parameters, which control the concurrent access to the tomcat server? Anything is possible, but neither of those is likely. > Or can an update to 6.0.20-26-28 solve this problem? Unlikely. Although you should upgrade to 6.0.29 for the recent security fix. > Software versions: > OS: Suse Linux Enterprise 10 > Tomcat: 6.0.18 > JAVA JRE: 1.6.0_10-b33 And I'd upgrade the JVm too. > I would be grateful for any idea. Looks like an application issue to me. Take the thread dumps and check the logs. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
