Book Image

IBM InfoSphere Replication Server and Data Event Publisher

By : Pav Kumar-Chatterjee, Pav Kumar Chatterjee
Book Image

IBM InfoSphere Replication Server and Data Event Publisher

By: Pav Kumar-Chatterjee, Pav Kumar Chatterjee

Overview of this book

Business planning is no longer just about defining goals, analyzing critical issues, and then creating strategies. You must aid business integration by linking changed-data events in DB2 databases on Linux, UNIX, and Windows with EAI solutions , message brokers, data transformation tools, and more. Investing in this book will save you many hours of work (and heartache) as it guides you around the many potential pitfalls to a successful conclusion. This book will accompany you throughout your Q replication journey. Compiled from many of author's successful projects, the book will bring you some of the best practices to implement your project smoothly and within time scales. The book has in-depth coverage of Event Publisher, which publishes changed-data events that can run updated data into crucial applications, assisting your business integration processes. Event Publisher also eliminates the hand coding typically required to detect DB2 data changes that are made by operational applications. We start with a brief discussion on what replication is and the Q replication release currently available in the market. We then go on to explore the world of Q replication in more depth. The latter chapters cover all the Q replication components and then talk about the different layers that need to be implemented—the DB2 database layer, the WebSphere MQ layer, and the Q replication layer. We conclude with a chapter on how to troubleshoot a problem. The Appendix (available online) demonstrates the implementation of 13 Q replication scenarios with step-by-step instructions.
Table of Contents (12 chapters)
IBM InfoSphere Replication Server and Data Event Publisher
Credits
About the Author
About the Reviewer
Preface

The WebSphere MQ layer


This is the second layer we should install and test—if this layer does not work then Q replication will not work!

We can either install the WebSphere MQ Server code or the WebSphere MQ Client code. Throughout this book, we will be working with the WebSphere MQ Server code.

If we are replicating between two servers, then we need to install WebSphere MQ Server on both servers. If we are installing WebSphere MQ Server on UNIX, then during the installation process a user ID and group called mqm are created. If we as a DBA want to issue MQ commands, then we need to get our user ID added to the mqm group.

Assuming that WebSphere MQ Server has been successfully installed, we now need to create the Queue Managers and the queues that are needed for Q replication. The details of what we need to create for each scenario are discussed in Appendix A. This section also includes tests that we can perform to check that the MQ installation and setup is correct. The following diagram shows...