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English
  • PowerExchange for CDC and Mainframe 10.4.1
  • All Products

Table of Contents

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  1. Preface
  2. Part 1: PowerExchange Change Data Capture Introduction
  3. Part 2: CDC Components Configuration and Management
  4. Part 3: CDC Sources Configuration and Management
  5. Part 4: Change Data Extraction
  6. Part 5: Monitoring and Tuning
  7. Appendix A: CDC for z/OS Troubleshooting
  8. Appendix B: DTL__CAPXTIMESTAMP Time Stamps

CDC Guide for z/OS

CDC Guide for z/OS

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Managing VSAM Schema Changes

Managing VSAM Schema Changes

If the record layout of the VSAM source data set changes, use the following procedures to ensure that data previously captured remains available for use.
To manage VSAM schema changes:
  1. Stop updates to the VSAM source file.
  2. If you are using PowerExchange Condense, ensure that PowerExchange Condense has extracted all captured change data from the PowerExchange Logger.
  3. Extract all captured changes using the existing extraction map.
  4. In the VSAM capture registration, set the
    Status
     option to
    History
    .
  5. Change the VSAM file structure as needed.
  6. Delete the extraction map.
  7. Create a data map for the new VSAM data structure.
  8. Create capture registration using the new data map.
  9. Allow changes to the altered VSAM file.
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