Issue

The following exception occurs when trying to load a core file in jdb.

java.io.IOException
    at sun.jvm.hotspot.jdi.SACoreAttachingConnector.attach(SACoreAttachingConnector.java:139)
    at com.sun.tools.example.debug.tty.VMConnection.attachTarget(VMConnection.java:349)
    at com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:159)
    at com.sun.tools.example.debug.tty.Env.init(Env.java:55)
    at com.sun.tools.example.debug.tty.TTY.main(TTY.java:1045)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at sun.jvm.hotspot.jdi.SACoreAttachingConnector.createVirtualMachine(SACoreAttachingConnector.java:96)
    at sun.jvm.hotspot.jdi.SACoreAttachingConnector.attach(SACoreAttachingConnector.java:124)
    ... 4 more
Caused by: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the core file
    at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.attach0(Native Method)
    at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.attach(LinuxDebuggerLocal.java:276)
    at sun.jvm.hotspot.HotSpotAgent.attachDebugger(HotSpotAgent.java:648)
    at sun.jvm.hotspot.HotSpotAgent.setupDebuggerLinux(HotSpotAgent.java:634)
    at sun.jvm.hotspot.HotSpotAgent.setupDebugger(HotSpotAgent.java:339)
    at sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:314)
    at sun.jvm.hotspot.HotSpotAgent.attach(HotSpotAgent.java:174)
    at sun.jvm.hotspot.jdi.VirtualMachineImpl.createVirtualMachineForCorefile(VirtualMachineImpl.java:206)
    ... 10 more

When using LIBSAPROC_DEBUG=1, the following messages appear before the error:

libsaproc DEBUG: lookup failed for symbol 'UseSharedSpaces' in obj '/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/server/libjvm.so'
libsaproc DEBUG: can't lookup 'UseSharedSpaces' flag