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English
  • PowerExchange for CDC and Mainframe 10.5
  • 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 you need to change the record layout of a VSAM source data set, use this procedure to retain access to previously captured data while capturing data of the new format.
  1. Stop updates to the VSAM source file.
  2. Close the VSAM file in the CICS region.
  3. If you use PowerExchange Condense, verify that PowerExchange Condense has extracted all data from the PowerExchange Logger log files.
  4. Complete extraction processing of all captured changes based on the existing extraction map.
  5. In the VSAM capture registration, set the
    Status
     option to
    History
    .
  6. Change the VSAM file structure.
  7. Delete the extraction map.
  8. Create a data map for the altered VSAM data set.
  9. Create a capture registration using the new data map.
  10. Open the VSAM file in the CICS region.
  11. Allow updates to be made the VSAM data set again.
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