Define Enhanced Catalog Sharing

Enhanced catalog sharing (ECS) provides a substantial performance benefit for catalogs that are shared between one or more systems in a sysplex configuration. By using a coupling facility cache structure instead of DASD to store catalog sharing control information, ECS eliminates a reserve, dequeue, and I/O request to the VVDS on most catalog calls.

The structure size is determined by the number of active catalogs you want to share. The name of the structure is SYSIGGCAS_ECS.

You can find more detailed help on the following elements of this window:

Existing catalogs

Catalogs you want to share