Attaching the Java Agent to a Running JVM Process

[s.mkrtichian]

[root@netflow lib]# java -Xbootclasspath/a:/usr/java/jdk1.8.0_60/lib/tools.jar -jar /opt/appdyn/javaagent.jar 11692
Attaching to VM [11692]
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.singularity.ee.agent.appagent.AgentEntryPoint.main(AgentEntryPoint.java:494)
Caused by: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded
at sun.tools.attach.LinuxVirtualMachine.<init>(LinuxVirtualMachine.java:106)
at sun.tools.attach.LinuxAttachProvider.attachVirtualMachine(LinuxAttachProvider.java:63)
at com.sun.tools.attach.VirtualMachine.attach(VirtualMachine.java:208)
... 5 more

[s.mkrtichian]

Hi,

any idea?

Thanks

[smaddela]

Hi,

Just saw this post and looks like I've also been getting a similar error.

java -Xbootclasspath/a:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar -jar /home/avenida/appagent/javaagent.jar 1047
Attaching to VM [1047]
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:606)
at com.singularity.ee.agent.appagent.AgentEntryPoint.main(AgentEntryPoint.java:494)
Caused by: java.io.IOException: Operation not permitted
at sun.tools.attach.LinuxVirtualMachine.sendQuitTo(Native Method)
at sun.tools.attach.LinuxVirtualMachine.<init>(LinuxVirtualMachine.java:91)
at sun.tools.attach.LinuxAttachProvider.attachVirtualMachine(LinuxAttachProvider.java:63)
at com.sun.tools.attach.VirtualMachine.attach(VirtualMachine.java:213)
... 5 more

Could somebody help here?

[Arun.Dasetty · Accepted solution]

Hi,

Can we please re-run in new shell prompt with same user logged in who launched the jvm process that we are trying to attach with? and see how it goes.

refer forum links:

https://code.google.com/p/jvmtop/issues/detail?id=4

http://stackoverflow.com/questions/5769877/attachnotsupportedexception-due-to-missing-java-pid-file-...

[s.mkrtichian]

Hi Akumar,

It works! Thank you.