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MQSeries.net Forum Index » General IBM MQ Support » not able to start MQ Explorer - error message inside

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skoesters
PostPosted: Fri Dec 18, 2009 3:02 am    Post subject: not able to start MQ Explorer - error message inside Reply with quote

Acolyte

Joined: 08 Jun 2008
Posts: 73
Hi,

today i noticed that i am no able to start my websphere MQ Explorer.

I get this error

Code:

java.lang.NoClassDefFoundError: org.eclipse.core.resources.IProjectDescription
   at java.lang.J9VMInternals.verifyImpl(Native Method)
   at java.lang.J9VMInternals.verify(J9VMInternals.java:66)
   at java.lang.J9VMInternals.initialize(J9VMInternals.java:127)
   at com.ibm.mq.explorer.tests.Notify.pluginEnabled(Notify.java:96)
   at com.ibm.mq.explorer.ui.internal.base.NotificationManager.notifyPluginEnabled(NotificationManager.java:869)
   at com.ibm.mq.explorer.ui.internal.base.UiPlugin.sendPluginEnablementEvents(UiPlugin.java:2483)
   at com.ibm.mq.explorer.ui.internal.base.UiPlugin.addNavigatorView(UiPlugin.java:1574)
   at com.ibm.mq.explorer.ui.internal.views.MQNavigatorView.createPartControl(MQNavigatorView.java:296)
   at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:370)
   at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:227)
   at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:592)
   at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(WorkbenchPage.java:4080)
   at org.eclipse.ui.internal.WorkbenchPage$17.runWithException(WorkbenchPage.java:3145)
   at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
   at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
   at org.eclipse.swt.widgets.Synchronizer.contact admin(Synchronizer.java:123)
   at org.eclipse.swt.widgets.Display.contact admin(Display.java:3659)
   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3296)
   at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:801)
   at org.eclipse.ui.internal.Workbench$25.runWithException(Workbench.java:1342)
   at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
   at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
   at org.eclipse.swt.widgets.Synchronizer.contact admin(Synchronizer.java:123)
   at org.eclipse.swt.widgets.Display.contact admin(Display.java:3659)
   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3296)
   at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2309)
   at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
   at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
   at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
   at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
   at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
   at com.ibm.mq.explorer.ui.rcp.internal.base.RcpApplication.run(RcpApplication.java:145)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:615)
   at org.eclipse.equinox.internal.app.EclipseAppContainer.callMethod(EclipseAppContainer.java:572)
   at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:171)
   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:615)
   at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:508)
   at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447)
   at org.eclipse.equinox.launcher.Main.run(Main.java:1173)
   at org.eclipse.equinox.launcher.Main.main(Main.java:1148)


i re-installed Eclipse, the Explorer himself and Java JRE

any ideas?

best regards
Sebastian
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student
PostPosted: Fri Dec 18, 2009 3:21 am    Post subject: Reply with quote

Apprentice

Joined: 17 Mar 2009
Posts: 31
Location: UK
hi,

what is the version of mq? you probably need to check the below link

http://publib.boulder.ibm.com/infocenter/wmqv7/v7r0/index.jsp?topic=/com.ibm.mq.mqovervw.doc/mqovervw.htm
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skoesters
PostPosted: Fri Dec 18, 2009 3:24 am    Post subject: Reply with quote

Acolyte

Joined: 08 Jun 2008
Posts: 73
thanks. i found what was wrong.

i had to delete my settings. don´t know why they were broken
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ak77
PostPosted: Wed Jan 06, 2010 2:02 am    Post subject: Websphere MQ Explorer NoClassDefFoundError Reply with quote

Newbie

Joined: 06 Jan 2010
Posts: 1
Hi Sebastian,
I'm getting a similar problem to yours.

You mentioned in your reply that you deleted your setting to resolve the issue.

Can you elaborate as to how and where you did this.

Thanks,
Alan
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tonythomasantony
PostPosted: Fri Aug 19, 2011 2:16 am    Post subject: Reply with quote

Apprentice

Joined: 12 Aug 2006
Posts: 47
hi
i have faced the same error few days back and able to rectify it after deleting the folder "MQ Explorer" from
C:\Documents and Settings\<userid>\Application Data\IBM\.

You may lose all your referenced queue-managers from remote servers.
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