Cris, On 7/22/2016 10:15 AM, Berneburg, Cris J. - US wrote: > Mark (Thomas), Román, Guido, and Mark (Eggers) > > Thank you all for your suggestions, assistance, and patience. > > With your help and encouragement I learned how to perform heap dumps > using Java VisualVM, analyze them using Eclipse Memory Analyzer, and > follow instructions. ;-) > > The OutOfMemoryError in Tomcat Manager was caused by a memory leak > when Log4J did not terminate properly. This was due to my mistake of > neglecting to set up the necessary Log4J shutdown procedures. > > Adding Log4jServletContextListener and log4jServletFilter to my app's > web.xml solved the problem. The Find Leaks button on the Tomcat > Manager page confirmed. > > I apologize for taking your time and bandwidth on such a newbie > mistake. > > Thanks again for your help. :-) > > -- Cris Berneburg CACI Lead Software Engineer > > -----Original Message----- From: Berneburg, Cris > [mailto:cberneb...@caci.com] Sent: Thursday, July 14, 2016 2:27 PM > To: Tomcat Users List Subject: OutOfMemoryError: PermGen space > >> Hi Folks >> >> I got this error from the Tomcat Web Application Manager after >> having stopped and started one of the applications multiple times. >> (This was after repeatedly deploying the application manually to >> attempt to find a bug that I could not reproduce in my IDE.) Once >> the error occurred, the server was extremely sluggish to respond >> even to remote desktop mouse and keyboard events. > > [SNIP] > >> Here's the error: >> >> FAIL - Application at context path /someapp could not be started >> FAIL - Encountered exception java.lang.OutOfMemoryError: PermGen >> space >> >> Is this likely due to a memory leak in my application? > > [SNIP] > >> OS: Win Server 2012 R2 Java: 1.6.0_24 (oops, need to upgrade that >> now) Tomcat: 6.0.37 (hmm... will need to upgrade soon-ish)
You're more than welcome. Glad that it was a simple 'read and follow the instructions' problem. Been there, done that, have the palm prints on my forehead. Something I've made a habit of (after getting burned several times by stray threads, threadlocals, and permgen errors) is to search for tomcat / servlet container in the context of using a library when I add a new one to the mix. That search has saved me lots of grief. . . . just my two cents. /mde/
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