z/OS MVS Programming: Workload Management Services
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Why Use the Routing Manager Services

z/OS MVS Programming: Workload Management Services
SC34-2663-00

Why Use the Routing Manager Services

A routing manager is a subsystem that establishes and manages connections between a client and a server address space.

Routing manager services perform two main functions:

  • Automatically starting and maintaining server address spaces as needed by the workload across the sysplex.
  • Balancing the workload among the servers in the sysplex by deciding on the best server and providing the server routing information when a server is requested by the routing manager.

Table 5 shows a summary of the routing manager services.

Table 5. Routing manager services
ServicePurposeInformation
IWM4CONWith the ROUTER=YES parameter, establish the caller as a routing manager so it can begin requesting server routing information through IWMSRFSV.IWM4CON – Connecting to Workload Management
IWM4CONWith the SERVER_MANAGER=YES and SERVER_TYPE=ROUTING parameters, establish the caller as an eligible server for requests coming from a routing manager. Workload management will balance the workload among the eligible servers.IWM4CON – Connecting to Workload Management
IWM4DISRemove the caller as a routing manager.IWM4DIS – Disconnecting from Workload Management
IWM4ECRECreate an enclave. This is done in a server address space.IWM4ECRE macro — Create Enclave
IWM4EDELDelete an enclave.IWM4EDEL – Deleting an Enclave
IWMSRFSVFind the best server for a work request. If no server exists for a request, start one.IWMSRFSV macro — Sysplex Routing Find Server Routine

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