java.lang.OutOfMemoryError: PermGen space Exception

Question

I am getting this java.lang.OutOfMemoryError: PermGen space Exception. I am using Eclipse Juno and Tomcat 7.0. This Exception occurs at least once in every 10-15 Minutes in a console. How to resolve it?

Feb 25, 2016 10:23:23 AM org.springframework.beans.factory.support.DefaultListableBeanFactory destroyBean
SEVERE: Destroy method on bean with name 'mvcUrlPathHelper' threw an exception
java.lang.OutOfMemoryError: PermGen space
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2895)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1173)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1681)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2895)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1173)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1681)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessBeforeDestruction(PersistenceAnnotationBeanPostProcessor.java:375)
    at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:242)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:578)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:554)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:925)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:523)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:932)
    at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:997)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:547)

Feb 25, 2016 10:23:24 AM org.springframework.beans.factory.support.DefaultListableBeanFactory destroyBean
SEVERE: Destroy method on bean with name 'mvcPathMatcher' threw an exception
java.lang.OutOfMemoryError: PermGen space

Exception in thread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" java.lang.OutOfMemoryError: PermGen space

sorry It's an internal framework bean. Try looking up for eclipse.ini file and change the memory allocated -Xmx512m — Phanindra Gopishetty, Feb 25 '16 at 06:45
@PhanindraGopishetty its already having Xmx512m,, should i change it to Xmx1024m — Santosh Jadi, Feb 25 '16 at 07:08
@PhanindraGopishetty i changed to 1024,, its giving pop up error while starting eclipse called "Failed to Create JVM" — Santosh Jadi, Feb 25 '16 at 07:19
ok. So you must be trying to load a lot of data with such small amount of free memory. You will have to do some optimization. Get few records at a time using hibernate queries instead of getting whole data at once. Example- query.setFirstResult(0); query.setMaxResults(10); — Phanindra Gopishetty, Feb 25 '16 at 07:42
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/104511/discussion-between-santosh-jadi-and-phanindra-gopishetty). — Santosh Jadi, Feb 25 '16 at 09:22

score 4 · Answer 1 · edited May 23 '17 at 12:10

What is java.lang.OutOfMemoryError: PermGen space?

Ans:

The java.lang.OutOfMemoryError: PermGen space message indicates that the Permanent Generation’s area in memory is exhausted.

Any Java applications is allowed to use a limited amount of memory. The exact amount of memory your particular application can use is specified during application startup.

Java memory is separated into different regions which can be seen in the following image:

What will be the solution for this error PermGen space?

Ans:

For Heap,

export JVM_ARGS="-Xms1024m -Xmx1024m"

For Permgen,

JVM_ARGS="-XX:PermSize=512M -XX:MaxPermSize=512m"

You can give also additional section

-XX:MaxPermSize=512m -XX:+UseConcMarkSweepGC XX:+CMSClassUnloadingEnabled

You can also give more additional section :)

-XX:PermSize=512m -XX:MaxPermSize=512m -Djava.awt.headless=true -Dfile.encoding=UTF-8 -XX:SurvivorRatio=2 -XX:MaxTenuringThreshold=128 -XX:TargetSurvivorRatio=90 -Djava.awt.headless=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+CMSIncrementalPacing -XX:CMSIncrementalDutyCycleMin=0 -XX:CMSIncrementalDutyCycle=10 -XX:+UseTLAB -XX:+CMSParallelRemarkEnabled -XX:+CMSClassUnloadingEnabled

Metaspace: A new memory space is born

The JDK 8 HotSpot JVM is now using native memory for the representation of class metadata and is called Metaspace; similar to the Oracle JRockit and IBM JVM's.

The good news is that it means no more java.lang.OutOfMemoryError: PermGen space problems and no need for you to tune and monitor this memory space anymore.

java.lang.OutOfMemoryError: PermGen space Exception

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