Re: Memory Leak?

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Tue Jul 20 2010 - 13:34:22 UTC

  • Next message: Andrus Adamchik: "Re: Memory Leak?"

    You are probably using hot redeploy. In this case you will need to
    shut down EventManager in a "destroy" method of your servlet or
    filter. This will kill those cayenne-edt threads from the undeployed
    application.

    Andrus

    On Jul 20, 2010, at 4:28 PM, Andrew Willerding wrote:

    > When starting my web app under Tomcat 6.0.26, I get the following
    > logged..
    >
    > (The application otherwise appears to be working fine so I'm just
    > wondering if I should be concerned or how to prevent this error from
    > happening upon startup)
    >
    > 20-Jul-2010 9:16:40 AM org.apache.catalina.loader.WebappClassLoader
    > clearReferencesJdbc
    > SEVERE: A web application registered the JBDC driver
    > [com.ibm.db2.jcc.DB2Driver] but failed to unregister it when the web
    > application was stopped. To prevent a memory leak, the JDBC Driver
    > has been forcibly unregistered.
    > 20-Jul-2010 9:16:40 AM org.apache.catalina.loader.WebappClassLoader
    > clearReferencesThreads
    > SEVERE: A web application appears to have started a thread named
    > [cayenne-edt-597457953-0] but has failed to stop it. This is very
    > likely to create a memory leak.
    > 20-Jul-2010 9:16:40 AM org.apache.catalina.loader.WebappClassLoader
    > clearReferencesThreads
    > SEVERE: A web application appears to have started a thread named
    > [cayenne-edt-597457953-1] but has failed to stop it. This is very
    > likely to create a memory leak.
    > 20-Jul-2010 9:16:40 AM org.apache.catalina.loader.WebappClassLoader
    > clearReferencesThreads
    > SEVERE: A web application appears to have started a thread named
    > [cayenne-edt-597457953-2] but has failed to stop it. This is very
    > likely to create a memory leak.
    > 20-Jul-2010 9:16:40 AM org.apache.catalina.loader.WebappClassLoader
    > clearReferencesThreads
    > SEVERE: A web application appears to have started a thread named
    > [cayenne-edt-597457953-3] but has failed to stop it. This is very
    > likely to create a memory leak.
    > 20-Jul-2010 9:16:40 AM org.apache.catalina.loader.WebappClassLoader
    > clearReferencesThreads
    > SEVERE: A web application appears to have started a thread named
    > [cayenne-edt-597457953-4] but has failed to stop it. This is very
    > likely to create a memory leak.
    > 20-Jul-2010 9:16:40 AM org.apache.catalina.loader.WebappClassLoader
    > clearReferencesThreads
    > SEVERE: A web application appears to have started a thread named
    > [PoolManagerCleanup-2013151593] but has failed to stop it. This is
    > very likely to create a memory leak.
    > log4j:WARN No appenders could be found for logger
    > (org.apache.cayenne.conf.DefaultConfiguration).
    > log4j:WARN Please initialize the log4j system properly.
    > log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig
    > for more info.
    >
    > Thanks,
    >
    > Andrew
    >



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