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Training - How to Tune the G1 Garbage Collector (Doc ID 2103280.1)

Last updated on JANUARY 18, 2023

Applies to:

Java SE JDK and JRE - Version 7 and later
Oracle WebLogic Server - Version 10.3.6 to 10.3.6
Identity Manager - Version 12.2.1.3.0 to 12.2.1.3.0 [Release 12c]
Information in this document applies to any platform.

Purpose

This document discusses common performance issues in the Garbage First (G1) garbage collector and how to tune it effectively. 

Please note that performance tuning is outside the scope of Oracle Support.  Please see <Document 166650.1>, "Working Effectively with Support Best Practices", under the "Support Policies" tab.  Tuning assistance is provided by Oracle Consulting Services.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 G1 garbage collector basics
 Common G1 performance tuning issues and tuning tips
 JDK11 features
 G1 Enables Adaptive Parallel Reference Processing by Default
 Garbage Collectors Adaptively Scale the Number of Threads by Default
References

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