CDC Guide for z/OS

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

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Using WLM Service Classes to Prioritize PowerExchange CDC Started Tasks on z/OS

The Workload Manager (WLM) is a z/OS component that dynamically manages workload requests for z/OS shared resources, such as storage, CPU, and I/O devices, across one or more z/OS images based on service classes that you define.

You define service classes by using IBM z/OS WLM tools, such as the WLM ISPF application. Each service class includes a goal and importance level, which prioritize work based on your business requirements. Because of the nature of PowerExchange CDC tasks, Informatica recommends that you use execution velocity goals
. To achieve your performance goals for change data capture and delivery, work with your z/OS system programmer to assign the PowerExchange CDC started tasks or jobs to the appropriate service classes.

Assign each of the following types of PowerExchange started tasks or jobs to an appropriate service class:

PowerExchange Listener

PowerExchange Agent

PowerExchange Logger for z/OS

Post-Log Merge jobs

PowerExchange ECCRs

PowerExchange Condense

When determining the service class to use, consider the resource usage characteristics and performance goal for each task type.

Tuning CDC Sessions

PowerExchange Listener - Service Class Criteria

PowerExchange Agent - Service Class Criteria

PowerExchange Logger for z/OS - Service Class Criteria