Java Out Of Memory Error Permgen Space
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about permgen space tomcat Stack Overflow the company Business Learn more about hiring developers or posting ads with permgen space eclipse us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is permgen space android studio 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 402 Recently permgen space java 8 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 community wiki 7
Permgen Java
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. Under the "Java" tab, add the ar
API Home » Java » Understanding and avoiding the Java Permgen Space error 36 Understanding and avoiding the Java Permgen Space error - Steffen Luypaert Share Tweet Posted by Steffen Luypaert on Jul 24, 2011 in Java Java
How To Resolve Java.lang.outofmemoryerror Permgen Space
Performance PermGen In this article, I look into what it means when a Java permgen space gradle program runs into a OutOfMemoryError: PermGen Space error. I first explain what the permanent generation heap space is, after which I explain java.lang.outofmemoryerror: permgen space weblogic 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 JVM intrinsics. We take the JVM as is. Some of the http://stackoverflow.com/questions/88235/dealing-with-java-lang-outofmemoryerror-permgen-space-error 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 be nice to know more about it, so I looked into what causes it exactly. Java http://www.integratingstuff.com/2011/07/24/understanding-and-avoiding-the-java-permgen-space-error/ 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 respectively put into and removed from the permanent generation heap. OutOfMemoryError: PermGen Space The OutOfMemoryError: PermGen Space error occurs when the permanent generation heap is full. Although this error can occur in normal circumstances,
ProjectsDealsJob BoardJobsJoin UsJCGW4GSubmission GuidelinesTerms & ConditionsAboutAbout JCGsAdvertisingTerms of UsePrivacy Policy Java Code Geeks Java Developers Resource Center AndroidAndroid CoreAndroid GamesJavaCore JavaDesktop JavaEnterprise JavaJVM LanguagesCeylonClojureGroovyJRubyKotlinScalaSoftware DevelopmentAgileCareerCommunicationsDevOpsMeta JCGBest Of The WeekMisc Home » Java » Core Java » Decoding https://www.javacodegeeks.com/2013/12/decoding-java-lang-outofmemoryerror-permgen-space.html Java.Lang.OutOfMemoryError: PermGen Space About Venkata Kiran Kiran is a product developer https://wiki.eclipse.org/FAQ_How_do_I_increase_the_permgen_size_available_to_Eclipse%3F working in medical domain. He worked on creating scalable java batch applications and is currently working on developing cross platform mobile applications. His current interests include automated testing of mobile applications. Decoding Java.Lang.OutOfMemoryError: PermGen Space Posted by: Venkata Kiran in Core Java December 5th, 2013 permgen space One of the least understood areas by Java Developers is garbage collection. Java Developers feel JVM takes care of garbage collection and they need not worry about memory allocation, deallocation etc. But as the applications grows complex, so does the garbage collection and once it is complex, the performance do get a hit. So it error permgen space will benefit the Java Developers to understand how garbage collection works and how to fix the ‘Out of Memory' issues in java. There are 2 quite common ‘Out of Memory' issues. The 1st one is ‘Heap Size' and the 2nd one is ‘PermGen Space'.Permanent Generation and ClassLoaders.Java objects are instantiations of the Java classes. Every time a new java object is created, JVM creates an internal representation of that object and stores it in the heap. If the class is accessed for the first time, then it has to be loaded by the JVM. Class loading is the process of locating the corresponding class file, seeking the file on the disk, loading the file and parsing the structure. It is the ClassLoaders responsibility to ensure proper loading of the classes.Each and every class in the java program needs to be loaded by the same ClassLoader. ClassLoaders are the instances of java.lang.ClassLoader class. For now, ClassLoader loads the java classes in Perm Space.JVM also creates an internal representation of t
Things LocationTech Long-Term Support PolarSys Science OpenMDM More Community Marketplace Events Planet Eclipse Newsletter Videos Participate Report a Bug Forums 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 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 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 implementation-specific and may not be applicable to all JVMs (although they do work with the Sun/Oracle JVMs). Eclipse and Sun VMs on Windows Eclipse 3.3 and above supports an argument to the launcher: --launcher.XXMaxPermSize. On Windows, Eclipse ships with the following lines in the eclipse.ini