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IBM InfoSphere Replication Server and Data Event Publisher

IBM InfoSphere Replication Server and Data Event Publisher

By : Pav Kumar-Chatterjee, Pav Kumar Chatterjee
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IBM InfoSphere Replication Server and Data Event Publisher

IBM InfoSphere Replication Server and Data Event Publisher

4 (1)
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)
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IBM InfoSphere Replication Server and Data Event Publisher
Credits
About the Author
About the Reviewer
Preface

The DB2 database layer


The first layer is the DB2 database layer, which involves the following tasks:

  • For unidirectional replication and all replication scenarios that use unidirectional replication as the base, we need to enable the source database for archive logging (but not the target table). For multi-directional replication, all the source and target databases need to be enabled for archive logging.

  • We need to identify which tables we want to replicate. One of the steps is to set the DATA CAPTURE CHANGES flag for each source table, which will be done automatically when the Q subscription is created. This setting of the flag will affect the minimum point in time recovery value for the table space containing the table, which should be carefully noted if table space recoveries are performed.

Before moving on to the WebSphere MQ layer, let’s quickly look at the compatibility requirements for the database name, the table name, and the column names. We will also discuss whether or not we need...

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