Enable multiple servants on z/OS

Use this task to enable multiple servants on the system. Enable multiple servants improves the performance of the product on z/OS..

Review the limitations of enabling multiple servants.

Workload Management (WLM), enables you to manage the performance and the number of servants that are running.. WLM manages the response time and throughput of transactions according to their assigned service class, the associated performance objectives, and the availability of system resources. To meet these goals, WLM sometimes needs to control or override the number of servants that are active. With this task, we can enable WLM to start additional servants to meet performance goals.

  1. In the console, click Servers > Server Types > WebSphere application servers > server_name.

  2. Under Server Infrastructure, click Java and process management > Server instance.

  3. Select the Multiple instances enabled field.

  4. Click Apply to finish the Server Instance changes.

  5. Click OK, and then click Save to save the configuration changes.


Workload Management (WLM) can start additional servant regions to meet performance goals, based on the importance of its work compared to other work in the system, the availability of system resources that are needed to satisfy those objectives, and a determination by WLM of whether starting more address spaces might help achieve the objectives. It is also important to make the goals reasonable.