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OUD Performance Troubleshooting - Examples for How to Setup and Enable Java Flight Recorder (JFR) (Doc ID 2097394.1)

Last updated on NOVEMBER 03, 2022

Applies to:

Oracle Unified Directory - Version 11.1.2.2.2 and later
Information in this document applies to any platform.

Goal

Oracle recommends setting up Java Mission Control with Java Flight Recorder - JFR to monitor the systems on an ongoing basis while having the lowest possible impact on the running system. This is a best practice to supplement the OUD standard data collection of RDA data collection and logs. It provides constant monitoring of the java layer over a rolling period of time, at a lower level than that captured in logs or from jstack snapshots collected by RDA. Since it will cover a period of time (an hour or more) and at greater depth, it is much more likely to capture the java activity leading up to an issue which, in turn, will increase the possibility of identifying the root cause and solution.

Java Mission Control white paper
Java Flight Recorder Runtime Guide

Java Flight Recorder and Java Mission Control on Java SE Embedded 8

 

NOTE: Customers need to be licensed for JAVA SE Advanced to use JFR and/or the Java Mission Control. Contact an Oracle java Sales representative to acquire a license if necessary. The exception to this licensing requirement is when Oracle Support asks for JFR to investigate an issue that requires JFR data to troubleshoot.

➜ Java Mission Control Is No Longer Bundled With the JDK

The latest versions of the JDK no longer include Java Mission Control (JMC). The jmc launcher has been removed from the JDK bin directory, and the missioncontrol directory has been removed from the JDK lib directory. The .jfr file association is not registered by JDK installers. JMC is now available as a separate download. Please visit https://www.oracle.com/javase/jmc for more information.

Solution

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In this Document
Goal
Solution


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