使用JMAP获取heapdump时出现异常 [英] Exception when taking a heapdump using JMAP

问题描述

当我使用

jmap -F -dump：format = b，file = / tmp / heapdump / before时，我得到以下异常.hprof 10737

Attaching to process ID 10737, please wait...
Exception in thread "main" java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at sun.tools.jmap.JMap.runTool(JMap.java:179)
    at sun.tools.jmap.JMap.main(JMap.java:110)
Caused by: java.lang.RuntimeException: Type "nmethodBucket*", referenced in VMStructs::localHotSpotVMStructs in the remote VM, was not present in the remote VMStructs::localHotSpotVMTypes table (should have been caught in the debug build of that VM). Can not continue.
    at sun.jvm.hotspot.HotSpotTypeDataBase.lookupOrFail(HotSpotTypeDataBase.java:361)
    at sun.jvm.hotspot.HotSpotTypeDataBase.readVMStructs(HotSpotTypeDataBase.java:252)
    at sun.jvm.hotspot.HotSpotTypeDataBase.<init>(HotSpotTypeDataBase.java:87)
    at sun.jvm.hotspot.bugspot.BugSpotAgent.setupVM(BugSpotAgent.java:568)
    at sun.jvm.hotspot.bugspot.BugSpotAgent.go(BugSpotAgent.java:494)
    at sun.jvm.hotspot.bugspot.BugSpotAgent.attach(BugSpotAgent.java:332)
    at sun.jvm.hotspot.tools.Tool.start(Tool.java:163)
    at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:77)

任何人都知道如何解决这个问题？

Anyone know how to resolve this ?

推荐答案

我看到同样的错误，因为我的jmap的路径与java进程的路径不同（即针对两个不同的版本）。

I was seeing the same error because my path to jmap wasn't the same as the path to the java process (i.e. targeting two different versions).

运行jmap与JDK的完整路径解决了它。

Running jmap with the full path to my JDK resolved it.

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