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Oracle WebLogic Server 12c Advanced Administration Cookbook

You're reading from   Oracle WebLogic Server 12c Advanced Administration Cookbook If you want to extend your capabilities in administering Oracle WebLogic Server, this is the helping hand you've been looking for. With 70 recipes covering both basic and advanced topics, it will provide a new level of expertise.

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Product type Paperback
Published in Jun 2013
Publisher
ISBN-13 9781849686846
Length 284 pages
Edition Edition
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Author (1):
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Dalton Iwazaki Dalton Iwazaki
Author Profile Icon Dalton Iwazaki
Dalton Iwazaki
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Table of Contents (15) Chapters Close

Oracle WebLogic Server 12c Advanced Administration Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Install, Configure, and Run FREE CHAPTER 2. High Availability with WebLogic Clusters 3. Configuring JDBC Resources for High Availability 4. Configuring JMS Resources for Clustering and High Availability 5. Monitoring WebLogic Server 12c 6. Troubleshooting WebLogic Server 12c 7. Stability and Performance 8. Security Index

Enabling Linux HugePages


Enabling Linux HugePages can improve the performance of the Oracle JRockit JVM and have several advantages over the default page size of 4 KB in Linux.

In this recipe, the HugePages will be enabled on all machines in the PROD_DOMAIN domain. A new JVM parameter will be added to the Managed Servers so the JVM makes use of the HugePages.

prod01 hosts the PROD_Server01 and PROD_Server02 Managed Servers. Since each instance is configured with a heap size of 2 GB, reserving 4 GB for HugePages in prod01 should be enough.

Getting ready

Before configuring the Linux HugePages, shut down all WebLogic Servers in the domain. Also stop the Administration Console instance and the Node Manager.

How to do it...

To enable the Linux HugePages, you must log in as root user:

  1. Log in as root user to the shell and execute the following commands to check the HugePages configuration:

    [root@prod01]$ cat /proc/meminfo | grep Huge
    HugePages_Total:     0
    HugePages_Free:      0
    HugePages_Rsvd:      0...
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