Thanks Yoav for your response.
>>The first problem is the session counter. It is implemented with the
>>HttpSessionListener. It works fine until recently. Under the TC5.0.X,
>the
>>counter can be a negative figure.
>
>The problem is obviously in your session counter code: if you posted it,
>we could help more.
>
I wish I can say the same. It, however, doesn' explain why the problem only occurs
recently. I note it on TC 5.0.x with the same code (I believe). Here is the code
segment:
public final class MyListener
implements
ServletContextListener,
HttpSessionListener,
HttpSessionActivationListener {
private static int activeSessionCount = 0;
public void contextInitialized(ServletContextEvent evt) {
// ...
}
public void contextDestroyed(ServletContextEvent evt) {
// ...
}
public void sessionCreated(HttpSessionEvent evt) {
activeSessionCount++;
HttpSession session = evt.getSession();
// ...
logger.info(
"The session ID: "
+ session.getId()
+ ", the total # of active sessions: "
+ activeSessionCount);
}
public void sessionDestroyed(HttpSessionEvent evt) {
activeSessionCount--;
logger.debug("The number of active sessions: " + activeSessionCount);
}
public void sessionWillPassivate(HttpSessionEvent evt) {
// ...
}
public void sessionDidActivate(HttpSessionEvent evt) {
logger.info("sessionDidActivate");
}
public static int getActiveSessionCount() {
return activeSessionCount;
}
}
>>The second is a quite severe problem. I configure the welcome file to
>map a
>>JSP file. Sometimes, an incoming URL of the default domain leads to the
>404
>>error. After I click the reload button on my browser, the JSP file
>shows
>>up.
>
>You need to do better than "sometimes" in order to get precise help.
>When does it happen, when does it not happen, and what's in the logs in
>both cases?
If I could pin point the occasion, I might solve it by now. I don't observe any logs
from the container during the time when the error occurs, but I would like to know how
set up logging messages for the problem. I don't know whether it is related with the
container configuration. The tag pool is disable.
Also, some users report the 404 error on some other use scenario, but we haven't
observe the same. The error rate is above 7-8% of the total hits. If a user follows
the action options on a screen, the error shall never happen.
Vernon
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