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  • PowerExchange for CDC and Mainframe 10.5
  • All Products

Table of Contents

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  1. Preface
  2. Part 1: PowerExchange CDC Introduction
  3. Part 2: PowerExchange CDC Components
  4. Part 3: PowerExchange CDC Data Sources
  5. Part 4: Change Data Extraction
  6. Part 5: Monitoring and Tuning
  7. Appendix A: DTL__CAPXTIMESTAMP Time Stamps

CDC Guide for Linux, UNIX, and Windows

CDC Guide for Linux, UNIX, and Windows

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Task Flow for Extracting Change Data

Task Flow for Extracting Change Data

Use this task flow to identify the tasks that you need to complete to configure and start extraction processing. You do these tasks in the PowerExchange Navigator, PowerCenter Designer, and PowerCenter Workflow Manager.
Before you begin, complete configuration of the data source and PowerExchange, and create capture registrations in the PowerExchange Navigator.
  1. Edit the extraction map if necessary.
    You can make the following changes:
    • Deselect any column for which you do not want to extract change data. PowerExchange still captures change data for these columns.
    • Add change indicator (CI) and before image (BI) columns.
  2. To test the extraction map, do a database row test on the extraction map in the PowerExchange Navigator.
  3. In Designer, import metadata for the sources and targets.
  4. In Designer, configure a mapping to extract and process change data.
  5. In Workflow Manager, configure a connection and session.
  6. Create restart tokens for the CDC session.
  7. Configure the restart token file.
  8. If you want to stop extraction processing based on user-defined events, implement event table processing.
  9. To offload column-level extraction processing and UOW Cleanser processing from the source system to the PowerCenter Integration Service machine, configure offload processing. You can also use offload processing to offload change data to a remote PowerExchange Logger for Linux, UNIX, and Windows process on another machine.
    If you configure offload processing for real-time extractions, you can also configure multithreaded processing to help improve throughput.
  10. Start the CDC session.
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