> -----Original Message----- > From: Mark Thomas [mailto:ma...@apache.org] > Sent: Friday, November 19, 2010 04:45 AM > To: Tomcat Users List > Subject: Re: After manager says that there was a leak, how to use a profiler? > > On 19/11/2010 03:58, Brian wrote: > > Hi Chris, > > > > I already took off the JARs from the shared/lib directory. So that is not an > issue now. > > I have just stopped my apps, and this is what I have found in my log: > > > > > > Nov 18, 2010 10:22:57 PM org.apache.catalina.core.StandardWrapper > > unload > > INFO: Waiting for 1 instance(s) to be deallocated Nov 18, 2010 > > 10:22:58 PM org.apache.catalina.loader.WebappClassLoader > > clearReferencesJdbc > > SEVERE: The web application [] registered the JBDC driver > [com.mysql.jdbc.Driver] but failed to unregister it when the web application > was stopped. To prevent a memory leak, the JDBC Driver has been forcibly > unregistered. > > Tomcat fixed this one for you. You'll need to de-register the JDBC driver in a > ServletContextListener to stop the message.
I tried. In the "contextDestroyed" method I placed a code that looks for the drivers and unregisters them. But the only driver found is "sun.jdbc.odbc.JdbcOdbcDriver", which is not even unregistered because (driver.getClass().getClassLoader().equals(getClass().getClassLoader())) = false > > Nov 18, 2010 10:22:58 PM org.apache.catalina.loader.WebappClassLoader > > clearReferencesThreads > > SEVERE: The web application [] appears to have started a thread named > [MySQL Statement Cancellation Timer] but has failed to stop it. This is very > likely to create a memory leak. > > I thought someone mentioned this was fixed in the latest MySQL JDBC driver. Thanks. I have downloaded to latest driver. Now lets see if that solves it. > > Nov 18, 2010 10:22:58 PM org.apache.catalina.loader.WebappClassLoader > > clearThreadLocalMap > > SEVERE: The web application [] created a ThreadLocal with key of type > [org.apache.commons.lang.builder.ReflectionToStringBuilder$1] (value > [org.apache.commons.lang.builder.reflectiontostringbuilde...@1794040]) > and a value of type [java.util.HashSet] (value [[]]) but failed to remove it > when > the web application was stopped. This is very likely to create a memory leak. > > I think this one is https://issues.apache.org/jira/browse/LANG-586 Thanks. I have upgraded to the latest version of Commons Lang. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
