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  • PowerExchange for CDC and Mainframe 10.5.4
  • 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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Recovery Scenarios

Recovery Scenarios

When you run Post-Log Merge, you need to consider the recovery options for the Post-Log Merge job as well as the other PowerExchange CDC components. Consider the following types of recovery scenarios:
  • PowerExchange CDC component failures
  • MVS system failures
PowerExchange CDC component failures might interrupt capture or extraction processing.
The following table lists the components that are involved in the Post-Log Merge environment and describes the result of component failure:
Component
Result If the Component Fails
Recovery
ECCR
Capture for that ECCR is interrupted.
Restart the ECCR.
PowerExchange Agent
Capture registrations cannot be verified.
Restart the PowerExchange Agent.
PowerExchange Condense
No new CDC data condensed.
Restart PowerExchange Condense.
PowerExchange Logger
The ECCRs that reside on the same system as the failed PowerExchange Logger also fail.
Restart the PowerExchange Logger and then the ECCRs.
PowerExchange Listener
The member Loggers and the Post-Log Merge job continue to run. Real-time extraction CDC sessions fail.
Restart the PowerExchange Listener and then restart the failed CDC sessions.
Post-Log Merge job
The member Loggers continue to run but real-time extraction CDC sessions fail.
Restart the Post-Log Merge job and then restart the failed CDC sessions.
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