Book Image

Oracle Goldengate 11g Complete Cookbook

By : Ankur Gupta
Book Image

Oracle Goldengate 11g Complete Cookbook

By: Ankur Gupta

Overview of this book

Oracle Goldengate 11g Complete Cookbook is your complete guide to all aspects of Goldengate administration. The recipes in this book will teach you how to setup Goldengate configurations for simple and complex environments requiring various filtering and transformations. It also covers various aspects of tuning and troubleshooting the replication setups using exception handling, custom fields, and logdump utility.The book begins by explaining some basic tasks like Installation and Process groups setup. You will then be introduced to some further topics including DDL replication and various options to perform Initial Loads. You will then learn some advanced administration tasks such as Multi Master replication setup and conflict resolution. Further recipes, contain the cross platform replication and high availability options for Goldengate.
Table of Contents (16 chapters)
Oracle GoldenGate 11g Complete Cookbook
About the Author
About the Reviewers

Steps to implement a Heartbeat mechanism for the GoldenGate replication

A GoldenGate configuration consists of multiple processes each of which perform specific functions. Even though these processes are loosely coupled and maintain their respective checkpoints, an issue with one of them can cause the overall replication for that particular stream to fail. This behavior is not confined to just an issue that will cause a failure, it also persists to an issue which causes delay to one of the processes. So, if the Extract process is overloaded and there is a delay in reading data from the redo stream, the downstream Datapump and Replicat processes will receive the data only at that speed. Although monitoring the lag of an individual process can certainly highlight the sudden spikes in lag times, it will not provide a breakdown of what stage of the replication is causing the majority of the lag. This is where you need to implement a technique called Heartbeat . In this recipe, we will look...