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 ASNCLP environment


Let's start by looking at what ASNCLP is. In a nutshell, it is a command-line interface for administering Q replication, Event Publishing, and SQL replication.

We can set up the ASNCLP environment on the replication servers, or alternatively we can set it up on another server, which is shown in the following diagram:

If we are replicating from DB2A on a system called SYA to DB2B on a system called SYB, then we can administer the replication scenario from a system called SYC by cataloguing the DB2A and DB2B databases on SYC as DB2A and DB2B. We need to use the same database names because ASNCLP on SYC will use the database alias names and not the actual database names.

The examples in Appendix A, use ASNCLP commands to set up various Q replication scenarios.

The ASNCLP interface can also be used to set up InfoSphere Classic replication (say IMS to Oracle), but this is outside the scope of this book.

In DB2 V8, we had to alter the operating system PATH setting on the machine...