Java Permgen Space Error
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Permgen Space JenkinsJoin them; it only takes a minute: Sign up Dealing with “java.lang.OutOfMemoryError: PermGen space” error up vote 1042 down vote favorite 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 permgen java 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 community 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
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Permgen Space Java 824, 2011 in Java Java Performance PermGen In this article, I look into permgen space gradle what it means when a Java program runs into a OutOfMemoryError: PermGen Space error. I first explain what the permanent how to resolve java.lang.outofmemoryerror permgen space generation heap space is, after which I explain the usual cause of the Permgen Space error and I give some pointers on how to avoid it. Introduction Usually, we do not look into http://stackoverflow.com/questions/88235/dealing-with-java-lang-outofmemoryerror-permgen-space-error JVM intrinsics. We take the JVM as is. Some of the world’s finest engineers are working on the JVM(s) and I am sure we can’t improve their work, definitely not without getting seriously involved. However, as a Java developer, you are often confronted with performance issues, usually working memory related. The problem I run into most is the dreaded OutOfMemoryError: PermGen Space error. I thought it would http://www.integratingstuff.com/2011/07/24/understanding-and-avoiding-the-java-permgen-space-error/ be nice to know more about it, so I looked into what causes it exactly. Java memory structure To understand the error, we have to look into how the jvm memory is structured. There are two memory regions in the JVM: the heap and the stack. Local variables and methods reside on the stack, everything else on the heap. This Java heap memory is structured again into regions, called generations. The longer an object lives, the higher the chance it will be promoted to an older generation. Young generations(such as Eden on Sun JVM) are more garbage collected than older generations(survivor and tenured on Sun JVM). However, there is also some separate heap space called permanent generation. Since it is a separate region, it is not considered part of the Java Heap space. Objects in this space are relatively permanent. Class definitions are stored here, as are static instances. Without getting into details, Classloaders deploy and undeploy classes all the time. For example, this happens when an application is deployed or undeployed on a webserver. On web servers, all applications have their own Classloader. When an application is deployed or undeployed, its class definitions and Classloader are
Things LocationTech Long-Term Support PolarSys Science OpenMDM More Community Marketplace Events Planet Eclipse Newsletter Videos Participate Report a Bug Forums https://wiki.eclipse.org/FAQ_How_do_I_increase_the_permgen_size_available_to_Eclipse%3F Mailing Lists Wiki IRC How to Contribute Working Groups Automotive Internet of Things LocationTech Long-Term Support PolarSys Science OpenMDM Toggle navigation Breadcrumbs Home Eclipse Wiki FAQ How do I increase the permgen size available to Eclipse? Log in Jump to: navigation, search ---Navigation---Main PageCommunity portalCurrent eventsRecent changesRandom pageHelpNavigation Main Page permgen space Community portal Current events Recent changes Random page Help ---Toolbox---Page informationPermanent linkPrintable versionSpecial pagesRelated changesWhat links hereToolbox Page information Permanent link Printable version Special pages Related changes What links here Page Discussion View source History FAQ How do I increase the permgen size available to Eclipse? Note: Oracle Java 8 does not java permgen space have a separate permanent generation space any more. The -XX:(Max)PermSize option makes no difference (the JVM will ignore it, so it can still be present). If you see java.lang.OutOfMemoryError: PermGen space errors, you need to increase the permanent generation space available to Eclipse. PermGen is the permanent generation of objects in the VM (Class names, internalized strings, objects that will never get garbage-collected). An easy, if somewhat memory-hungry fix is to enlarge the maximum space for these objects by adding -XX:MaxPermSize=128M as an argument to the JVM when starting Eclipse. The recommended way to do this is via your eclipse.ini file. Alternatively, you can invoke the Eclipse executable with command-line arguments directly, as in eclipse [normal arguments] -vmargs -XX:PermSize=64M -XX:MaxPermSize=128M [more VM args] Note: The arguments after -vmargs are directly passed to the VM. Run java -X for the list of options your VM accepts. Options starting with -X are im