Error while using Attach Api

Question

While using attach API in Eclipse error is thrown in console.

In order to use attach API I went to installed JRE in eclipse and then using edit option included the tools.jar in the external jars option in current JRE.

But it throws the following error when i try to execute a simple program such as

java.lang.UnsatisfiedLinkError: no attach in java.library.path com.sun.tools.attach.AttachNotSupportedException: no providers installed at com.sun.tools.attach.VirtualMachine.attach(VirtualMachine.java:190) at dynamicLoadingTest.VMAttach.main(VMAttach.java:17)

This is the simple program executed. import java.io.IOException;

import com.sun.tools.attach.AttachNotSupportedException; import com.sun.tools.attach.VirtualMachine; public class VMAttach { public static void main(String[] args) { try { VirtualMachine vm = VirtualMachine.attach("6832"); } catch (AttachNotSupportedException e) { System.out.println("This error"); e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }

The process id mentioned 6832 is of a Java application running on the system

On changing the installed jre to jdk following error is produced

Exception in thread "main" com.sun.tools.attach.AttachNotSupportedException: jvm.dll not loaded by target process at sun.tools.attach.WindowsVirtualMachine.<init>(WindowsVirtualMachine.java:46) at sun.tools.attach.WindowsAttachProvider.attachVirtualMachine(WindowsAttachProvider.java:52) at com.sun.tools.attach.VirtualMachine.attach(VirtualMachine.java:195) at dynamicLoadingTest.VMAttach.main(VMAttach.java:17)

@SanyamGoel try looking at this stackoverflow.com/questions/5565356/… — exexzian
– exexzian, Commented Jan 12, 2013 at 8:37
@sanix i have checked the java library path it contains the path to jdk library where the tools.jar is located — Sanyam Goel
– Sanyam Goel, Commented Jan 12, 2013 at 17:48

Deepak kumar Jha · Accepted Answer · 2013-01-30 17:45:24Z

8

Actually, This problem orignates when you have diffrent jdks in your system and all are included on the class path.

answered Jan 30, 2013 at 17:45

Deepak kumar Jha

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1 Comment

Brad Wood Over a year ago

Can this answer be expanded on? How would this be detected and/or solved?

Evgeni Sergeev · Accepted Answer · 2015-08-10 12:06:22Z

For me, the solution was to put attach.dll from the JDK (same version as your JRE) into the JRE's bin directory.

Sanyam Goel · Accepted Answer · 2013-01-17 09:26:43Z

1

I tried the same with JDK1.7 and it is working fine. With JDK1.6 the problem remains .

answered Jan 17, 2013 at 9:26

Sanyam Goel

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