Optimized dynamic workload routing implementation

CICSPlex® SM provides dynamic workload management for CICS®. CICSPlex SM can augment its workload management decisions using current status information posted directly from CICS by using a region status (RS) server.

To optimize workload routing in a sysplex, you must configure and monitor a region status (RS) server, as part of a coupling facility data table. Full workload optimization takes place automatically when all workload regions are migrated to CICS TS for z/OS®, Version 4.1 and later, and when a region status (RS) server is started in the same z/OS image as each region in the workload in the CICSplex.

For further details, see Setting up and running a region status server and Security for coupling facility data tables.

You can mix CICS TS for z/OS, Version 4.1 and later regions in a workload with regions using a previous version of CICS TS. However, workloads will run in a non-optimized state because full workload optimization is achieved only when all regions in the workload are migrated to CICS TS for z/OS, Version 4.1 or later.

You define and modify CICSplexes using the EYUSTARTCPLEXDEF view set. Using the CPLEXDEF detail view, you can modify the coupling facility (CF) tuning parameters for the region status (RS) server, which provide sysplex optimized workload routing.