java.lang.OutOfMemoryError: PermGen space

[flashing]

I use springide from 2.0 beta, and frequently caught java.lang.OutOfMemoryError: PermGen space
Exception, and then my eclipse crashed.
I use Eclipse 3.2.2,and have updated to the latest springide 2.0 release version,but the Exception still occured frequently.

In eclipse's workspace directory, I found the following message in the .log file:

!ENTRY org.eclipse.ui 4 0 2007-06-29 15:03:04.906
!MESSAGE PermGen space
!STACK 0
java.lang.OutOfMemoryError: PermGen space
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClass Loader.defineClass(DefaultClassLoader.java:161)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManag er.defineClass(ClasspathManager.java:501)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManag er.findClassImpl(ClasspathManager.java:471)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManag er.findLocalClassImpl(ClasspathManager.java:430)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManag er.findLocalClass(ClasspathManager.java:413)
at org.eclipse.osgi.internal.baseadaptor.DefaultClass Loader.findLocalClass(DefaultClassLoader.java:189)
at org.eclipse.osgi.framework.internal.core.BundleLoa der.findLocalClass(BundleLoader.java:334)
at org.eclipse.osgi.framework.internal.core.BundleLoa der.findClass(BundleLoader.java:386)
at org.eclipse.osgi.framework.internal.core.BundleLoa der.findClass(BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClass Loader.loadClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at org.eclipse.jdt.ui.CodeStyleConfiguration.createIm portRewrite(CodeStyleConfiguration.java:50)
at org.eclipse.jdt.internal.corext.codemanipulation.S tubUtility.createImportRewrite(StubUtility.java:10 12)
at org.eclipse.jdt.internal.ui.javaeditor.ClipboardOp erationAction.addImports(ClipboardOperationAction. java:498)
at org.eclipse.jdt.internal.ui.javaeditor.ClipboardOp erationAction.doPasteWithImportsOperation(Clipboar dOperationAction.java:483)
at org.eclipse.jdt.internal.ui.javaeditor.ClipboardOp erationAction.internalDoOperation(ClipboardOperati onAction.java:277)
at org.eclipse.jdt.internal.ui.javaeditor.ClipboardOp erationAction$1.run(ClipboardOperationAction.java: 248)
at org.eclipse.swt.custom.BusyIndicator.showWhile(Bus yIndicator.java:67)
at org.eclipse.jdt.internal.ui.javaeditor.ClipboardOp erationAction.run(ClipboardOperationAction.java:24 6)
at org.eclipse.jface.action.Action.runWithEvent(Actio n.java:499)
at org.eclipse.ui.commands.ActionHandler.execute(Acti onHandler.java:185)
at org.eclipse.ui.internal.handlers.LegacyHandlerWrap per.execute(LegacyHandlerWrapper.java:109)
at org.eclipse.core.commands.Command.executeWithCheck s(Command.java:461)
at org.eclipse.core.commands.ParameterizedCommand.exe cuteWithChecks(ParameterizedCommand.java:424)
at org.eclipse.ui.internal.handlers.HandlerService.ex ecuteCommand(HandlerService.java:160)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.exe cuteCommand(WorkbenchKeyboard.java:466)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.pre ss(WorkbenchKeyboard.java:799)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.pro cessKeyEvent(WorkbenchKeyboard.java:846)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.fil terKeySequenceBindings(WorkbenchKeyboard.java:564)

It seems it was caused by springide, and in fact, after closing the springide plugin, it worked well again.

Does anyone have the same problem?

[Christian Dupuis]

Hi,

the PermGen space problem is actually not that much of a problem. It is indeed caused by Spring IDE or - more precisely - by the AOP support tools. This is due to the high number of class instances that are created during pointcut matching.

You can simply work around this by increasing the size of the permanent generation space in your eclipse.ini:

-XX:PermSize=128m 
-XX:MaxPermSize=128m

Note that you don't necessarily need to increase the heap size.

HTH

Christian

[flashing]

Thank you, I will try it again.

[Christian Dupuis]

Here are two links that explain the problem in more detail:

• Eclipse Bugzilla: [Workbench] Excessive amount of Permanent Generation memory reported by the VM
• Mylyn FAQ: I am seeing java.lang.OutOfMemoryError: PermGen space errors, what's wrong?

Christian