Out Of Memory Error In Tomcat 6.0
Out Of Memory Errors, or OOMEs, are one of the most common problems faced by Apache Tomcat users. Generally, these errors occur during development, but can even occur on production servers that are experiencing an unusually high spike of traffic. Tomcat 7 includes fixes and workarounds to prevent some of the causes of OOMEs, but nothing substitutes a good understanding of why these errors occur. This guide will help you understand why these errors are so prevalent and seemingly hard to fix, and show you how organizations using Apache Tomcat in enterprise production environments use Tcat to fix and avoid these errors. What Causes An OOME? The literal cause of an Out Of Memory Error is simple: a given Tomcat instance uses up all of the heap memory allocated to it, causing an application or server crash. Thus, the errors themselves are not particularly puzzling. The reason why OOMEs have become such a persistent topic of discussion in the Apache Tomcat community is that they are difficult to trace to their root cause. A stack trace will not show the cause, as the problem usually lies not with Tomcat, but the web application. Meanwhile, the 'incorrect' web app code causing Tomcat to run out of memory is usually technically correct. That is to say, in any context other than a container managed environment, the code would be considered standard. It is easy to see why a developer might have trouble determining which 'correct' section of their code was incorrect. Here are some of the most common root causes of an OOME: a simple case of the heap size being too small running out of file descriptors more open threads than the host OS allows code with high amounts of recursion code that loads a very large file into memory code that retaining references to objects or classloaders a large number of web apps and a small PermGen Fixing Out Of Memory Errors If you are encounterin
App EngineApache AntApache MavenjQueryJava MongoDBQuartz SchedulerLog4jContact Us Tomcat - java.lang.OutOfMemoryError: PermGen spaceBy mkyong | October 23, 2008 | Updated : March 12, 2014 | Viewed : 596,683 times +1,649 pv/wOften time, Tomcat may hits the following java.lang.OutOfMemoryError: PermGen space error. java.lang.OutOfMemoryError: PermGen space at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) It's usually happened after the Tomcat restarts a few times.1. SolutionBy default, Tomcat is assigned a very little PermGen memory https://www.mulesoft.com/tcat/tomcat-oome-out-of-memory-error for the running process. To fix it, increase the PermGen memory settings by using the following Java VM options. -XX:PermSize
English » 1. Installation / Deployment / Setup Recent Posts https://web.liferay.com/community/forums/-/message_boards/message/32046407 Statistics RSS (Opens New Window) Answer (Unmark) Mark as an Answer Threads [ Previous | Next ] Tomcat Startup Error http://www.coreservlets.com/Apache-Tomcat-Tutorial/eclipse-jdk1.6.0_21-permgen-bug.html - Out of Memory : Java Heap Space Saurabh Srivastava December 1, 2013 10:45 PM RE: Tomcat Startup Error out of - Out of Memory : Java Heap Space Jignesh Vachhani December 2, 2013 2:28 AM RE: Tomcat Startup Error - Out of Memory : Java Heap Space Saurabh Srivastava December 2, 2013 4:08 AM Tomcat Startup Error - out of memory Out of Memory : Java Heap Space December 1, 2013 10:45 PM Answer Saurabh Srivastava Rank: New Member Posts: 3 Join Date: November 21, 2013 Recent Posts Hi Friends,I am using Liferay 6.1 Community Version bundled with tomcat application server.Suddenly I am getting this error from past a few days.INFO: Deploying configuration descriptor D:\Softwares\liferay-portal-tomcat-6.1.2-ce-ga3-20130816114619181\liferay-portal-6.1.2-ce-ga3\tomcat-7.0.40\conf\Catalina\localhost\ROOT.xmlDec 2, 2013 5:38:08 AM org.apache.catalina.startup.HostConfig deployDescriptorsSEVERE: Error waiting for multi-thread deployment of context descriptors to completejava.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java heap space at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source) at java.util.concurrent.FutureTask.get(Unknown Source) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:579) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:475) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1402) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:318) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:402) at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:347) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1140) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.
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