Before you begin
To generate diagnostic data in the Java Flight Recorder diagnostic image, WebLogic Server must be configured with Java HotSpot VM and Flight Recorder must be enabled. For more information, see Configuring Diagnostic Image Capture for Flight Recorder. Note that Java Flight Recorder is disabled by default. For information about how to enable Java Flight Recorder in WebLogic Server, see Using Java Flight Recorder with Java HotSpot VM.
The volume of diagnostic data produced by WebLogic Server can be
adjusted to include more, or less, data. Note that the WLDF diagnostic
volume setting does not affect explicitly configured diagnostic modules.
By default, the diagnostics volume is set to
For information about the events that are captured at each volume setting, see Configuring WLDF Diagnostic Volume.
An image of the selected server's current configuration and state is saved to the listed directory. For information about viewing the diagnostic image data in Java Mission Control, see Configuring Diagnostic Image Capture for Flight Recorder.