java flight recorder如何转储异常，FlightRecordingDumpOnUnhandledException

Question

java version 1.7.0_79 Java(TM) SE Runtime Environment (build 1.7.0_79-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)

args i use

-XX:+UnlockCommercialFeatures 
-XX:+FlightRecorder  
-XX:+FlightRecordingDumpOnUnhandledException -XX:StartFlightRecording=duration=6m,filename=member.jfr"
-XX:FlightRecorderOptions=loglevel=debug,delay=2m,maxsize=2g"

error

Unrecognized VM option 'FlightRecordingDumpOnUnhandledException'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

what is the correct option to use ? to dump the recording on exception

Answer 1

-XX:+FlightRecordingDumpOnUnhandledException only works for JRockit. No similar option exists for Hotspot (JDK7/8)

Answer 2

Use the template manager that is available in Mission Control.

Go to Windows -> Template Manager and import the template and check Heap Statistics and Allocation Profiling, export it. Done!

(I copy-pasted this text from similar question , @Kire wrote it as well)

Basically, you can just add exception-level=all to settings. I have no idea why Oracle don't have documentation for this parameters.