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Oracle GoldenGate 11g Implementer's guide

You're reading from Oracle GoldenGate 11g Implementer's guide Design, install, and configure high-performance data replication solutions using Oracle GoldenGate

Product type Paperback

Published in Feb 2011

Publisher Packt

ISBN-13 9781849682008

Length 280 pages

Edition 1st Edition

Tools

GoldenGate

Concepts

Database Administration

Author (1):

John P Jeffries

View More author details

Table of Contents (21) Chapters

Oracle GoldenGate 11 Implementer's guide

Credits

Foreword

About the Author

About the Reviewers

www.PacktPub.com

Preface

1. Getting Started

2. Installing and Preparing GoldenGate FREE CHAPTER

3. Design Considerations

4. Configuring Oracle GoldenGate

5. Configuration Options

6. Configuring GoldenGate for HA

7. Advanced Configuration

8. Managing Oracle GoldenGate

9. Performance Tuning

10. Troubleshooting GoldenGate

GGSCI Commands

GoldenGate Installed Components

The Future of Oracle GoldenGate

Index

Data compression

Oracle GoldenGate offers data compression at the network layer, enhancing data transfer rates. Once configured in the Extract or Data Pump process parameter file, the Server Collector process on the target machine automatically decompresses the data before writing to the remote trail files.

Compressing the Data Stream

Depending on your data, the maximum compression ratio can exceed 5:1, which will help transfer speeds on low bandwidth networks. However, additional CPU utilization is possible when compared to no data compression, which is the default.

If compression is enabled, the following statistics are available in the Extract process report, requested via the GGSCI SEND command with the GETTCPSTATS argument:

Compression CPU time: The time in seconds the process used the CPU resource.
Compress time: The overall time the compression tool takes including waits on CPU resource.
Uncompressed bytes and compressed bytes: Includes detail on the amount of compression taking place....

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Authors (1)

John P Jeffries

John P Jeffries

John P Jeffries has worked in many countries around the world, consulting on the Oracle technology. He is interested in different cultures and enjoys teaching others. At present, John lives and works in Singapore and is employed as a subject matter expert at a global bank, delivering enterprise-wide infrastructure design solutions, particularly in the database private cloud and data replication space. Since he wrote his first book, Oracle GoldenGate 11g Implementer's Guide, he has been heavily focused on leveraging Oracle's Fusion Middleware products (including GoldenGate) to address performance, data migration, and data delivery issues. With over 15 years of experience in Oracle, John has worked for a number of global organizations, such as BT, Siebel Systems, Dell, Thomson Reuters, and Oracle Corporation, to name a few. At Oracle, he worked in advanced customer services on key accounts as a senior principal consultant and became the UK data replication expert, often publishing articles on his own website (http://oracle11ggotchas.com/). John is an Oracle Certified Professional and a GoldenGate specialist. He gives presentations at ODTUG conferences and continues to share his real-life hands-on experience through his work. Known for his ability to provide robust, effective solutions and workarounds, John delivers his knowledge, tips, and tricks in his new book, Oracle GoldenGate 12c Implementer's Guide.

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