About the Author

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.

Thank you for purchasing my book, which would not have been possible without the help and support of a number of key people and organizations. First, I would like to thank my wife, Wendy, for her dedication, encouragement, and the sacrifice that she has endured. I would also like to thank her for her support at weekends and for putting up with my late nights' work. Wendy also helped me with the proofreading. Second, I would like to thank the reviewers of this book, who provided me with excellent feedback that helped me focus on the material for the Oracle community. Finally, I would like to thank Packt Publishing for asking me to write a second edition of Oracle GoldenGate 11g Implementer's Guide. I trust that you will find this edition just as interesting and informative as the first, enabling you to tailor a successful implementation of Oracle 12c GoldenGate to your specific requirements.