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Informatica PowerExchange with Oracle CDCRaghavendra Parasharam Venkata

Informatica PowerExchange with Oracle CDC

White PaperRaghavendra Parasharam Venkata

Informatica PowerExchange with Oracle CDC

Condentiality StatementThis is a controlled document. Unauthorized access, copying, replication and usage for a purpose other than for which this is intended are prohibited All trademarks that appear in the document have been used for identication purposes only and belong to their respective companies.

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Copyright 2007 by Tata Consultancy Services. No part of this publication may be reproduced, stored in a retrieval system, used in a spreadsheet, or transmitted in any form or by any means electronic, mechanical, photocopying, recording, or otherwise without the permission of Tata Consultancy Services.

Informatica PowerExchange with Oracle CDC

AbstractThis paper explains the concept of PowerExchange, Oracle CDC and the implementation of PowerExchange with CDC for PowerCenter. And, describes the installation of PowerExchange plug-in, testing the rows through PowerExchange Navigator. This paper also discusses about the benets and Challenges of PowerExchange with CDC.

DomainPowerExchange provides the extract and applies functionality required to support data warehouse and migration initiatives. PowerExchange has become the standard in this area, demonstrating excellent performance, scalability, productivity and ease-of-use. Informatica PowerExchange, based on a services-oriented architecture (SOA), provides on-demand access to data in all critical enterprise data systems, including mainframe, midrange, and lebased systems. Organization can respond to business events at the moment they occur with the option of CDC, rather than to wait for hours or days. Moreover, extend data integration to satisfy todays need for timely, accurate data. CDC PowerExchange deals with sensitive customer data from all domains.

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Copyright 2007 by Tata Consultancy Services. No part of this publication may be reproduced, stored in a retrieval system, used in a spreadsheet, or transmitted in any form or by any means electronic, mechanical, photocopying, recording, or otherwise without the permission of Tata Consultancy Services.

Informatica PowerExchange with Oracle CDC

ContentsINTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 OVERVIEW ON INFORMATICA POWEREXCHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 OVERVIEW ON POWEREXCHANGE WITH CHANGE DATA CAPTURE . . . . . . . . . . . . .71. When it is required? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. When it is recommended? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3. Difference between with and without CDC: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4. Example of a Change Data Capture System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5. Components and Terminology for Synchronous Change Data Capture . . . . . . . . . . . . . . . . . . . . . . . . 10

1. POWEREXCHANGE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 1.1 CHECK LIST FOR INSTALLATION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 1.2 INSTALLATION STEPS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 1.3 AUTHENTICATION OF INSTALLATION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 2. CREATING CDC MAPPINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 3. POWEREXCHANGE NAVIGATOR - TO VIEW THE CHANGES . . . . . . . . . . . . . . . . . . .18 4. POWEREXCHANGE LISTENER - TO START/STOP THE POWEREXCHANGE . . . . . .23 5. POWEREXCHANGE WITH CDC - CHALLENGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 5.1 PERFORMANCE CHALLENGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 5.2 IMPLEMENTATION CHALLENGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 6. POWEREXCHANGE WITH CDC - BENEFITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 ADDENDUM A: PERFORMANCE TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 ADDENDUM B: CHANGE DATA CAPTURE VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 CONCLUSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 ACKNOWLEDGEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

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Copyright 2007 by Tata Consultancy Services. No part of this publication may be reproduced, stored in a retrieval system, used in a spreadsheet, or transmitted in any form or by any means electronic, mechanical, photocopying, recording, or otherwise without the permission of Tata Consultancy Services.

Informatica PowerExchange with Oracle CDC

IntroductionOverview on Informatica PowerExchangeInformatica PowerExchange, based on a services-oriented architecture (SOA), provides ondemand access to data in all critical enterprise data systems, including mainframe, midrange, and le-based systems. Tightly integrated with Informatica PowerCenter, PowerExchange helps organizations leverage mission-critical operational data by making it available to people and processes without requiring manual coding of data extraction programs. Its SQL access to native database APIs provides high-performance extraction, conversion, and ltering of data without intermediary staging and programming. Shared services offer data delivery options that enable IT organizations to exibly and efciently manage processing demands. Organizations today demand immediate access to accurate information for quick decision making and high-speed operations. At the same time, the volume and variety of data is exploding, stretching the capacity of IT resources and infrastructures. To leverage the full value of their information, organizations must be able to integrate data from a wide variety of transactional applications and systems for easy access and right time delivery. PowerExchange provides on-demand access to immediate, accurate, and understandable data. With Informatica PowerExchange you can: Access and deliver data in right time Extend existing IT investments Unlock complex systems without coding

Access data on demand: PowerExchange offers several options for capturing data and making it available to a range of targets. It can capture data from relational and non-relational data sources either as whole data sets or as incremental changed data, in real-time or in a scheduled batch process. PowerExchange enables organizations to schedule data delivery to multiple targets weekly, daily, hourlyeven at the sub-second. Informatica PowerExchange provides a single architecture that allows a seamless transition from batch and bulk, to batch and changed data capture, to real-time changed data capture delivery. PowerExchange also eliminates the need for multiple-step processes with extraction, le transfer, and load scripts for batch data processing. Extend existing IT investments: Based on an extensible, service-oriented architecture, PowerExchange supports a variety of platforms. As a business decides to make more of its data sources available to other applications across the enterprise, it can add platforms easily. SQL access to native database APIs delivers high performance: PowerExchange extracts, converts, lters, and makes data available to target systems without intermediary staging and program coding.

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Copyright 2007 by Tata Consultancy Services. No part of this publication may be reproduced, stored in a retrieval system, used in a spreadsheet, or transmitted in any form or by any means electronic, mechanical, photocopying, recording, or otherwise without the permission of Tata Consultancy Services.

Informatica PowerExchange with Oracle CDC

Unlock complex systems without coding: Unlocking the value of legacy systems once meant costly new system development and data migration, or complex hand coding to access critical data. Informatica PowerExchange signicantly reduces the time and resources required to leverage existing investments, streamlining access to legacy systems and delivering data to a range of business applications. It masks the complexity of source systems from developers and offers an intuitive GUI with SQL-like access, eliminating the need for lengthy training and implementation.

Overview on PowerExchange with Change Data CaptureOrganization can respond to business events at the moment they occur with the option of CDC, rather than to wait for hours or days. Moreover, extend data integration to satisfy todays need for timely, accurate data. The PowerExchange CDC option recognizes business events, such as customer creation or order shipment data, by capturing the database inserts, updates, and deletes these events as soon as they occur. This captured stream of database activity can be delivered to multiple targets in real time, without intermediate queues or staging tables.

1. When it is Required?PowerExchange Change Data Capture (CDC) Option is essential whenever you need timelier access to data. Data extraction

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