Exception in Thread "Thread-12751" Java.lang.OutOfMemoryError:PermGen space

Reprinted from: http://greemranqq.iteye.com/blog/1705867

Reprinted from: http://www.cnblogs.com/xwdreamer/archive/2011/11/21/2296930.html

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1. Exception in thread "Containerbackgroundprocessor[standardengine[catalina]"

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1. Java.lang.OutOfMemoryError:PermGen Space

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1. Reason:
3. The full name of PermGen space is permanent Generation space,

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1. Refers to the memory's permanent storage area, which is primarily stored by the JVM with class and meta information,

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1. Class is placed in PermGen space when it is loader,

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1. It differs from the heap area where the class instance (Instance) is stored, GC (garbage Collection)

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1. PermGen space is not cleaned during the main program run time, so if you have many classes in your application,

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1. PermGen space errors are most likely to occur when the Web server pre-compile the JSP.

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1. If you have a large number of third-party jars under your web app that are larger than the JVM's default size (4M), this error message will be generated.

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1. Workaround 1:
3. Manually set the MaxPermSize size, if it is a Linux system, modify the tomcat_home/bin/catalina.sh, if it is a Windows system, modify Tomcat_home/bin/catalina.bat,
4. Add the following line to the "Echo " Using catalina_base: $CATALINA _base "":
5. Java_opts= "-server-xx:permsize=64m-xx:maxpermsize=128m

Workaround 2

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1. Modify the Eclipse.ini file and modify the following:
4. -vmargs
5. -dosgi.requiredjavaversion=1.5
6. -xms128m
7. -xmx512m
8. -xx:permsize=64m
9. -xx:maxpermsize=128m
11. If also reported is wrong, you can consider the following changes
14. -vmargs
15. -dosgi.requiredjavaversion=1.5
16. -xms512m
17. -xmx1024m
18. -xx:permsize=256m
19. -xx:maxpermsize=512m

Exception in Thread "Thread-12751" Java.lang.OutOfMemoryError:PermGen space