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The "MemoryLeakProtection" page has been changed by KonstantinKolinko: http://wiki.apache.org/tomcat/MemoryLeakProtection?action=diff&rev1=15&rev2=16 Comment: Add reference to BZ 53936 that proposes a workaround for classloader leaks caused by long-lived Exceptions Related issues * <<Anchor(49159)>>[[https://issues.apache.org/bugzilla/show_bug.cgi?id= 49159|49159]] - Improve ThreadLocal memory leak clean-up * [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4957990|Sun bug 4957990]] - In some cases the Server JVM fails to collect classloaders. According to [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4957990|this page]] it should have been fixed with java 6u16 but actually it was not. It seems to be fixed with 6u21 (documented [[http://download.java.net/jdk6/6u21/promoted/b03/changes/JDK6u21.list.html|here]] and verified by the author of this wiki page). - * [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6916498|Sun bug 6916498]] - An exception can keep a classloader in memory if the stack trace that was recorded when it was created contains a reference to one of its classes. Some fixes have been made in tomcat (see [[https://issues.apache.org/bugzilla/show_bug.cgi?id=50460|BZ 50460]]), but some library or JRE code may still create a leak that is undetected by tools because of this JVM bug. + * [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6916498|Sun bug 6916498]] - An exception can keep a classloader in memory if the stack trace that was recorded when it was created contains a reference to one of its classes. Fixes were done in Tomcat for its own classes that had this issue (see [[https://issues.apache.org/bugzilla/show_bug.cgi?id=50460|BZ 50460]]), but some library or JRE code may still create a leak that is undetected by tools because of this JVM bug. See also [[https://issues.apache.org/bugzilla/show_bug.cgi?id=53936|BZ 53936]] for a workaround that you can implement if you are unable to fix a buggy library. ---- [[CategoryFAQ]] --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
