Hi. We are experiencing some problems with our Tomcat. We are currently running Apache 2.0.54, Tomcat 4.1.30, Axis 1.2.final on RedHat 9.0 with kernel 2.4.27.
We have some web-services deployed under Axis and these services become unavailable during normal operation. It seems that this occurs because Tomcat stops answering requests on port 8080 (the Apache-Axis diagnostic web page (<http://127.0.0.1:8080/axis>) becomes unavailable). After examining the Tomcat log files the only suspicious entries we found was this exception that occurs regularly: 2005-12-12 12:47:04 StandardManager[/axis] Session event listener threw exception java.lang.IllegalStateException: getAttribute: Session already invalidated at org.apache.catalina.session.StandardSession.getAttribute(StandardSession.java:953) at org.apache.catalina.session.StandardSessionFacade.getAttribute(StandardSessionFacade.java:171) at org.apache.axis.transport.http.AxisHTTPSessionListener.destroySession(AxisHTTPSessionListener.java:43) at org.apache.axis.transport.http.AxisHTTPSessionListener.sessionDestroyed(AxisHTTPSessionListener.java:72) at org.apache.catalina.session.StandardSession.expire(StandardSession.java:658) at org.apache.catalina.session.StandardSession.expire(StandardSession.java:607) at org.apache.catalina.session.StandardManager.processExpires(StandardManager.java:793) at org.apache.catalina.session.StandardManager.run(StandardManager.java:870) at java.lang.Thread.run(Thread.java:534) It looks like Catalina tries to call getAttribute on a session it has already destroyed. Can this bring Tomcat to stop answering requests. Since the exception says that the session is already invalidated I would believe that the session is indeed destroyed. If not, could this cause a starving of free sessions, and thus bring Tomcat to a halt? I have seen some posts proposing to use: export LD_ASSUME_KERNEL=2.x.x Can that be a solution? As stated above we use RedHat 9.0 with kernel 2.4.27 what kernel version should we use in the export? We are really lost on this one and if anyone have any idea of what can cause Tomcat to stop answering requests we would very much like to hear them. Regards Sondre --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
