com.sun.tools.attach.AttachNotSupportedException: Unable to Attach to 32-bit Process (Doc ID 1537869.1)

Last updated on AUGUST 03, 2017

Applies to:

Oracle WebLogic Server - Version 10.3 to 12.1.1.0
Information in this document applies to any platform.

Symptoms

While trying to deploy war file from the weblogic admin console, Deployment fails with: Caused By: com.sun.tools.attach.AttachNotSupportedException: Unable to attach to 32-bit process running under WOW64

weblogic.application.ModuleException: Cannot initailize ClassRedefinerFactory
at weblogic.servlet.internal.WebAppModule.loadFastSwapClassloader(WebAppModule.java:1786)
at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:375)
at weblogic.application.internal.flow.ScopedModuleDriver.prepare(ScopedModuleDriver.java:176)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:199)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:517)
...
...
Caused By: com.sun.tools.attach.AttachNotSupportedException: Unable to attach to 32-bit process running under WOW64
at sun.tools.attach.WindowsVirtualMachine.openProcess(Native Method)
at sun.tools.attach.WindowsVirtualMachine.(WindowsVirtualMachine.java:38)
at sun.tools.attach.WindowsAttachProvider.attachVirtualMachine(WindowsAttachProvider.java:52)
at com.sun.tools.attach.spi.AttachProvider.attachVirtualMachine(AttachProvider.java:175)
...
...

Cause

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