Not supported for this JVM

[HomoEfficio]

Describe the bug
Using,

• JVM: OpenJDK 64-Bit Server VM (14.0.1+7, mixed mode, sharing)
• Java: version 14.0.1, vendor AdoptOpenJDK

for both VisualVM and other Java app.
VisualVM shows CPU graph successfully, while other Java app does not.

To Reproduce

1. Execute VisualVM
2. See the Monitoring section of VisualVM app
3. CPU section shows graph successfully
4. Execute other Java app
5. See the Monitoring section of the Java app
6. CPU sectinos shows 'Not supported for this JVM'

Expected behavior
CPU graph should be displayed, instead of 'Not supported for this JVM'

VisualVM log
Please attach VisualVM messages.log file to help diagnose your problem.
visualvm-logfile.txt

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: MacOS Catalina 10.15.6
• JDK version: OpenJDK 64-Bit Server VM (14.0.1+7, mixed mode, sharing), version 14.0.1, vendor AdoptOpenJDK
• VisualVM Version: 2.0.4

Additional context
Only VisualVM's CPU graph is shown successfully, while all other Java app shows 'Not supported for this JVM'.

[thurka]

It looks like the problem is caused by this exception (taken from your log file):

java.io.IOException: well-known file /var/folders/bv/b_h08xrn6_z68yl0dl38p_w9gdd_01/T/.java_pid70864 is not secure: file's group should be the current group (which is 1003604) but the group is 629569319
	at jdk.attach/sun.tools.attach.VirtualMachineImpl.checkPermissions(Native Method)
	at jdk.attach/sun.tools.attach.VirtualMachineImpl.<init>(VirtualMachineImpl.java:111)
	at jdk.attach/sun.tools.attach.AttachProviderImpl.attachVirtualMachine(AttachProviderImpl.java:58)
	at jdk.attach/com.sun.tools.attach.VirtualMachine.attach(VirtualMachine.java:207)
	at org.graalvm.visualvm.attach.AttachModelImpl.getVirtualMachine(AttachModelImpl.java:124)

file's group should be the current group (which is 1003604) but the group is 629569319

How is your program started? It seems that it runs in a slightly different context. Do you use Docker?
Can you please try to run
/Library/Java/JavaVirtualMachines/adoptopenjdk-14.jdk/Contents/Home/bin/jrunscript
from Terminal and see if you can reproduce this problem?

[thurka]

Closing until more info is available.

[chaudharisuresh997]

still it is a problem
My server has server has openjdk 11
my client(windows) has openjdk 14 it gives the same error.
tried with macos
this command succeed nc -vz ip_of_remote_server 9999