Using the -Xdiagnosticscollector option

This option enables the Diagnostics Collector.

The Diagnostics Collector is off by default and is enabled by a JVM command-line option:
-Xdiagnosticscollector[:settings=<filename>]

Specifying a Diagnostics Collector settings file is optional. By default, the settings file jre/lib/dc.properties is used. See Diagnostics Collector settings for details of the settings available.

If you run a Java™ program from the command line with the Diagnostics Collector enabled, it produces some console output. The Diagnostics Collector runs asynchronously, in a separate process to the one that runs your Java program. The effect is that output appears after the command-line prompt returns from running your program. If this happens, it does not mean that the Diagnostics Collector has hung. Press enter to get the command-line prompt back.



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