CDC Guide for z/OS

10.5.4
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- 10.5.6
- 10.5.5
- 10.5.3
- 10.5.2
- 10.5.1
- 10.5
- 10.4.1
- 10.4.0 HotFix 1
- 10.4.0

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ECCR Relationships with Other PowerExchange Components

The batch VSAM ECCR interacts with PowerExchange components such as the PowerExchange Logger for z/OS and PowerExchange Agent to perform CDC.

Consider the following the following relationships:

The batch VSAM ECCR, PowerExchange Logger, and PowerExchange Agent must run on the same z/OS system.

The batch VSAM ECCR must log all changes to a single PowerExchange Logger.

If you use the Post-Log Merge option of the PowerExchange Logger, you can capture changes that originate on different z/OS systems. In this case, you must run a PowerExchange Logger on each z/OS system where changes to the source VSAM data sets occur.

PowerExchange Logger operational issues can cause the batch CDC job to enter a wait state, which could prevent further capture and recording of change data. After you resolve the Logger operational issues, PowerExchange continues to capture and record change data without data loss.