CQS's support of multiple clients

A single CQS address space can support as many as 32 different clients that are on the same z/OS® image.

One CQS address space can support multiple clients. Examples of clients are IMS and RM.

As many as 32 different clients on the same z/OS image can connect to coupling facility structures through a single CQS by using the CQSCONN request. For example, as many as 32 different IMS control regions can specify the same CQS=xxx parameter in the DFSSQxx member of the IMS PROCLIB data set. IMS starts the CQS address space if it is not currently active. If CQS is already active, IMS registers with the active CQS address space and does not start an additional CQS address space. Be sure that not more than 32 IMS systems or RMs specify the same CQS.