Internal Server Error Java.lang.outofmemoryerror Permgen Space
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Java.lang.outofmemoryerror Permgen Space Eclipsewith us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack what is permgen space in java Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Dealing with “java.lang.OutOfMemoryError: PermGen space” error up vote 1042 down vote favorite error:out of memory: permgen space android studio 402 Recently I ran into this error in my web application: java.lang.OutOfMemoryError: PermGen space It's a typical Hibernate/JPA + IceFaces/JSF application running on Tomcat 6 and JDK 1.6. Apparently this can occur after redeploying an application a few times. What causes it and what can be done to avoid it? How do I fix the problem? java exception memory-leaks out-of-memory permgen share|improve this question edited May 11 at 12:58
Permgen Space Gradlecommunity wiki 7 revs, 6 users 55%Chris I have fought this for hours, but I have no good news. See my related question: stackoverflow.com/questions/1996088/… You may still have a memory leak, e.g. classes are not garbage collected because your WebAppClassLoader is not garbage collected (it has an external reference that is not cleared). increasing the PermGen will only delay the OutOfMemoryError, and allowing class garbage collection is a precondition, but will not garbage collect classes if their class loader still has references to it. –Eran Medan Jan 14 '10 at 11:48 I got this error at adding display taglib. Removing so also solved the error. Why so? –masT Nov 14 '13 at 11:51 And how did you run into it? –Thorbjørn Ravn Andersen Feb 25 '14 at 4:16 10 use JDK 1.8 :þ welcome to the MetaSpace –Rytek Mar 20 '14 at 16:25 add a comment| 32 Answers 32 active oldest votes 1 2 next up vote 515 down vote accepted The solution was to add these flags to JVM command line when Tomcat is started: -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled You can do that by shutting down the tomcat service, then going into the Tomcat/bin directory and running tomcat6w.exe.
in Java Everyone in java development faces java.lang.OutOfMemoryError now and then, OutOfMemoryError in Java is one problem which is more due to system's limitation (memory) rather than due to programming mistakes in java.lang.outofmemoryerror permgen space tomcat eclipse most cases though in certain cases you could have a memory leak how to resolve java.lang.outofmemoryerror permgen space which causing OutOfMemoryError. I have found that even though java.lang.OutOfMemoryError is quite common basic knowledge of its cause and
Permgen Javasolution is largely unknown among junior developers. Beginners books like Head First Java doesn't teach you much about how to deal with this kind of error. You need real experience dealing with http://stackoverflow.com/questions/88235/dealing-with-java-lang-outofmemoryerror-permgen-space-error production systems, handling a large number of user sessions to troubleshoot and fix performance issues like running out of memory. If you want to be good at troubleshooting and performance analysis, you need to learn some books on Java performance and profiling e.g. Java Performance The Definitive Guide By Scott Oaks or the Java Performance by Binu John. They are an excellent resource for http://javarevisited.blogspot.com/2011/09/javalangoutofmemoryerror-permgen-space.html senior Java developers and also teaches you tools and process to deal with an error like java.lang.OutOfMemoryError. In this article, we will explore what is java.lang.OutOfMemoryError; Why OutOfMemoryError comes in Java application, different type of OutOfMemoryError and How to fix OutOfMemoryError in Java. This article is purely meant to provide basic knowledge of java.lang.OutMemoryError and won't discuss profiling in detail. For profiling read the books I have mentioned before. What is java.lang.OutOfMemoryError in Java OutOfMemoryError in Java is a subclass of java.lang.VirtualMachineError and JVM throws java.lang.OutOfMemoryError when it ran out of memory in the heap. OutOfMemoryError in Java can come anytime in heap mostly while you try to create an object and there is not enough space on the heap to allocate that object. Javadoc of OutOfMemoryError is not very informative about this, though. Types of OutOfMemoryError in Java I have seen mainly two types of OutOfMemoryError in Java: 1) The java.lang.OutOfMemoryError: Java heap space 2) The java.lang.OutOfMemoryError: PermGen space Though both of them occur because JVM ran out of memory they are quite different to each other and their solutions are independent of each other. The difference
space" exception (classloader leaks) By fkieviet on Oct 19, 2006 This blog has moved to http://frankkieviet.blogspot.com Category: Sun Tags: none Permanent link to this entry https://blogs.oracle.com/fkieviet/entry/how_to_fix_the_dreaded « Classloader leaks:... | Main | More on... How to... » Comments: Excellent! That has always been a sore point. Why don't you post your patch to jdk-collaboration.dev.java.net so http://www.minecraftforum.net/forums/support/modded-client-support/1956670-permgen-space-error at least all JDK contributors can take advantage of it today? Thanks Matthias Posted by Matthias on October 19, 2006 at 11:30 PM PDT # Excellent blog! Thanks. When we permgen space added HAT (as jhat) to JDK 6 we knew it had some problems, but it was such a valuable tool in conjunction with jmap that we felt we needed to include it anyway. Sundar has done a fantastic job fixing some of the problems, and we definitely will accept this fix too. -kto Posted by Kelly O'Hair on October 20, java.lang.outofmemoryerror permgen space 2006 at 02:40 AM PDT # Thanks for the feedback! I submitted an RFE; see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6484556 I'll try to upload a patch to jdk-collaboration.dev.java.net (I'm currently waiting for access to this project). Posted by Frank Kieviet on October 20, 2006 at 04:47 AM PDT # [Trackback] Frank Kieviet has written a very interesting article on how to use existing free tools to easily track down hanging references to code that has been unloaded from a JVM. Anyone writing Java code that has to deal with code loading and unloading is p... Posted by Nick Stephen's blog on October 30, 2006 at 06:45 PM PST # Today I discovered your blog while googling information about JavaCAPS and transaction handling. Youre articles are very interesting and way better than the documentation delivered with JavaCAPS. Thanks for writing them! There isn't a lot of good information on the more technical aspects of JavaCAPS in the web, so your blog is really helpfull. Posted by Ortwin Escher on November 02, 2006 at 09:10 PM PST # Really helpfull informations, very cl
App Mods on Curse Rules Chat Desktop View Home Minecraft Forum Support Modded Client Support Permgen Space Error This thread was marked as Locked by Vauff. Search Search all Forums Search this Forum Search this Thread Tools Jump to Forum Permgen Space Error |<<< 123 >>>| 123Next #1 Jun 5, 2013 NeoGenMike NeoGenMike View User Profile View Posts Send Message Coal Miner Join Date: 4/21/2013 Posts: 101 Member Details Hey there guys. For a while now on one of my worlds I've been getting this little crash after a few minutes of gameplay (Or sooner if I interface with some Data-heavy mods like Applied Energistics). The game will get really bad lag spikes and eventually freeze and shut down (Shutting down internal server). I've been through the forums and all over the internet and found dozens of people with the same problem who had their issues resolved, but they never worked for me or couldnt because im using the default launcher, not Bukkit or Tekkit or FTB. It only happens on one of my worlds currently (Which has a large industrial section of a lot of mods) but it will happen on others if things get too wild. I used to use NEI, which, upon removing, made it happen MUCH less frequently, but living without NEI with 20+ mods is a pain, so I'd like it back. I have a fully updated Java 64-bit and Graphics card and 4GB of Dual-Channel RAM (Which may lie the problem). But here is the crash report.. ---- Minecraft Crash Report ---- // Don't be sad, have a hug! <3 Time: 6/3/13 1:54 PM Description: Exception in server tick loop java.lang.OutOfMemoryError: PermGen space at sun.misc.Unsafe.defineClass(Native Method) at sun.reflect.ClassDefiner.defineClass(Unknown Source) at sun.reflect.MethodAccessorGenerator$1.run(Unknown Source) at sun.reflect.MethodAccessorGenerator$1.run(Unknown Source) at java.secu