$ sudo jinfo -flags 14930

Attaching to process ID 14930, please wait...
Exception in thread "main" 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:622)
    at sun.tools.jinfo.JInfo.runTool(JInfo.java:97)
    at sun.tools.jinfo.JInfo.main(JInfo.java:71)
Caused by: sun.jvm.hotspot.runtime.VMVersionMismatchException: Supported versions are 23.25-b01. Target VM is 24.65-b04
    at sun.jvm.hotspot.runtime.VM.checkVMVersion(VM.java:234)

$ update-alternatives --get-selections | grep jinfo
jinfo                          auto     /usr/lib/jvm/java-6-openjdk-amd64/bin/jinfo