When to Use the Sysplex Routing Services

When a server is available to receive work requests, it issues the IWMSRSRG macro to register. You should issue IWMSRSRG once per initialization of a server. The system makes this information available asynchronously to all MVS™ images in the sysplex.

When a client wants to route work to a server, it issues the IWMSRSRS macro for a list of registered servers. To help the client decide where to route the request, IWMSRSRS returns the relative number of work requests that can be routed to each server in the list.

When a server is no longer available to receive work requests, it issues the IWMSRDRS macro to deregister. A server should issue IWMSRDRS once per address space termination.

The following section explains each of the services in more detail.