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WebCenter Content 12c: How To install and use JDK Mission Control Recordings on a Live Content Server (Doc ID 2963921.1)

Last updated on JULY 26, 2023

Applies to:

Oracle WebCenter Content - Version and later
Information in this document applies to any platform.


In Webcenter Content (WCC) 12c, diagnostic images of the server can be dumped at any time using JDK Mission Control.
In addition, when performance events such as OutOfMemoryError or extended blocks on threads occur, an automatic dump of the content server is performed to assist administrators and support in determining the cause of the event.

This is possible in WCC 12c due to the use of two powerful aspects of WebLogic and JDK Mission Control working in concert on behalf of the WCC managed server.  
(Note: previously in 11g WCC was required to use the JRockit JVM in order to use JRockit Mission Control - this is no longer the case - See Note 1337640.1)

What makes this possible in WCC are the following parts:

Flight Recorder (JFR): JFR is a performance monitoring and profiling tool. JFR records diagnostic information on a continuous basis, making it always available, even in the wake of catastrophic failure such as a system crash.

WebLogic Diagnostic Framework (WLDF): WLDF consists of a number of components that work together to collect, archive, and access diagnostic information about a WebLogic Server instance and its applications.

The diagnostic images are files with .jfr extensions (still same extension is used like the previous JRockit Flight Recording Tool).

These .jfr files can be navigated to from JDK Mission Control, giving WCC system administrators insight into a point of failure or event that triggered a dump of the Flight Recording. The .jfr files can also be loaded into JDK Mission Control that is installed on other machines/operating systems for analysis, etc.


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