How to Capture Thread Dump in JVM

How to Capture Thread Dump in JVM

Let’s see how to capture thread dump of application in java. We can capture it with or without Console.

Method to generate Thread dump with Console:
1. On Windows:

· Press Ctrl-Break in the command console you used to start the IDE

If the console isn't opened (in case you started the IDE using the default desktop icon):

launch the IDE using a console window
-Start Command Prompt
-go to {netbeans-install-dir}/bin

-type nb.exe

configure the desktop shortcut to launch the nb.exe instead of netbeans.exe (default)
NB7 and higher - just run netbeans.exe from console. If NB is started by shortcut use "--console new" option to open console (netbeans.exe --console new).

· The thread dump is printed into the command console.

2. Console on Unix, Linux, Mac OS X

·         Press Ctrl-\ in the terminal console you used to start the IDE
·         Send the QUIT signal to the Java VM running the IDE
kill -QUIT process_id where process_id is the process number of the respective java process
·    The thread dump is printed into the terminal

Note: Just assure that the line buffer is long enough so that the whole thread dump fits in.

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