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English
  • PowerExchange for CDC and Mainframe 10.5
  • All Products

Table of Contents

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  1. Preface
  2. Change Data Capture Introduction
  3. PowerExchange Listener
  4. PowerExchange Condense
  5. DB2 for i5/OS Change Data Capture
  6. Remote Logging of Data
  7. Introduction to Change Data Extraction
  8. Extracting Change Data
  9. Monitoring CDC Sessions
  10. Managing Change Data Extractions
  11. Tuning CDC Sessions
  12. Appendix A: DTL__CAPXTIMESTAMP Time Stamps

CDC Guide for i5/OS

CDC Guide for i5/OS

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Extraction Modes

Extraction Modes

You can extract the change data that PowerExchange captured in near real time or as a batch process.
You indicate the extraction mode by setting the PowerCenter connection type and certain PowerExchange CDC configuration parameters. Some extraction modes are available only if you use PowerExchange Condense or the PowerExchange Logger for Linux, UNIX, and Windows.
Based on your extraction requirements, use one of the following extractions modes:
Real-time extraction mode
Continuously extracts change data in near real time from the change stream. Extraction processing continues until the CDC session stops or is interrupted.
To implement this mode, configure a PWX CDC Real Time application connection in PowerCenter for your data source type.
Batch extraction mode
Extracts change data from PowerExchange Condense condense files on IBM i (i5/OS) or z/OS, or from PowerExchange Logger for Linux, UNIX, and Windows log files. Data is extracted only from the files that are closed at the time the CDC session runs. The CDC session ends after it completes processing the files.
To implement this mode, configure the following items:
  • In the PowerExchange Navigator, set the
    Condense
     option to
    Part
     or
    Full
     in the capture registrations.
  • In PowerCenter, configure a PWX CDC Change application connection for your data source type.
Continuous extraction mode.
Continuously extracts change data from open and closed PowerExchange Logger for Linux, UNIX, and Windows log files in near real time.
For data sources on IBM i (i5/OS) or z/OS, this extraction mode is available only if you log data to a remote PowerExchange Logger for Linux, UNIX, and Windows on another system.
To implement this mode, configure the following items:
  • In the PowerExchange Navigator, set the
    Condense
     option to
    Part
     in the capture registrations.
  • In PowerCenter, configure a PWX CDC Real Time application connection for your data source type.
  • Configure a CAPX CAPI_CONNECTION statement in the DBMOVER configuration file.
  • If you remote logging of data from z/OS or i5/OS data sources to a PowerExchange Logger for Linux, UNIX, and Windows, configure the remote PowerExchange Logger to log change data from the source system.
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