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Fetch java thread dump on Windows Server operating systems

This document describes how to fetch the PhenixID Authentication Services java thread dump on Windows server operating systems.

System requirements

- PhenixID Authentication Services installed.

- All actions below must be carried out on the server

Install Azul OpenJDK

Fetch PhenixID Authentication Services process ID

  • Right-click an empty area on the task bar and select Task Manager.
  • Select the Processes tab.
  • Check Show processes from all users at the bottom of Task Manager.
  • Select View > Select columns... from the menu bar.
  • Check PID (Process Identifier).
  • Click the OK button.
  • Click on the Image Name column to resort the processes by name.
  • Locate the process named "phenixidservice". (There might be multiple processes with that name. The process with the higher memory is the relevant one)
  • Note of the number in the PID column. (In the above example, the PID value is 3360).

Create thread dump file

  • Open Command Prompt as an administrator
  • Run the command <openjdkdir>/bin/jstack -l <REPLACE_WITH_PROCESS_ID_FETCHED_IN_PREVIOUS STEP> > threamdump.txt

    This example will create the thread dump file treaddump.txt in the c:\ folder.
    C:\>zulu-openjdk\zulu8.46.0.19-ca-jdk8.0.252-win_x64\bin\jstack.exe -l 3360 > threaddump.txt