Question

当试图将带有jmap的java核心转储转换为hprof时，我得到了这个执行：

Attaching to core core.26045 from executable /usr/java/jdk1.6.0_21/bin/java, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 17.0-b16
Dumping heap to core.hprof ...
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: sun.jvm.hotspot.debugger.UnmappedAddressException
        at sun.jvm.hotspot.debugger.PageCache.checkPage(PageCache.java:208)
        at sun.jvm.hotspot.debugger.PageCache.getData(PageCache.java:63)
        at sun.jvm.hotspot.debugger.DebuggerBase.readBytes(DebuggerBase.java:217)
        at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readCInteger(LinuxDebuggerLocal.java:482)
        at sun.jvm.hotspot.debugger.DebuggerBase.readAddressValue(DebuggerBase.java:454)
        at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readOopHandle(LinuxDebuggerLocal.java:436)
        at sun.jvm.hotspot.debugger.linux.LinuxAddress.getOopHandleAt(LinuxAddress.java:120)
        at sun.jvm.hotspot.oops.Oop.getKlassForOopHandle(Oop.java:237)
        at sun.jvm.hotspot.oops.ObjectHeap.newOop(ObjectHeap.java:362)
        at sun.jvm.hotspot.utilities.HashtableEntry.literal(HashtableEntry.java:53)
        at sun.jvm.hotspot.memory.SymbolTable.symbolsDo(SymbolTable.java:106)
        at sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeSymbols(HeapHprofBinWriter.java:838)
        at sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:396)
        at sun.jvm.hotspot.tools.HeapDumper.run(HeapDumper.java:56)
        at sun.jvm.hotspot.tools.Tool.start(Tool.java:221)
        at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:77)
        ... 6 more

我用了命令：

jmap -dump:format=b,file=core.hprof /usr/java/jdk1.6.0_21/bin/java core.26045

对此有何帮助？

我正在尝试在同一个框中创建hprof，我获得了核心转储。

Answer 1

我猜您应该使用此方法：因为缺少可执行参数，所以jmap认为您正在尝试连接到远程主机。我想您应该尝试这样的事情：

jmap -dump:format=b,file=jvm.hprof /usr/bin/java core.26045.dmp

我希望这会有所帮助。

无法使用jmap将java核心转储转换为hprof

1 个答案: