The following Communications Server address spaces provide PC-entered services that must be accessible to all address spaces, so a system LX is obtained.
The following applications use these subsystems:
Unless you specify REUSASID=YES on the START command, the Address Space Identifiers (ASIDs) associated with these address spaces will be nonreusable when these address spaces are stopped or restarted. If these address spaces are stopped enough times and you do not specify REUSASID=YES when you start the address space, all available ASIDs might be exhausted, which prevents a new address space from being created on the system. In this case, an IPL is required. Specifying REUSASID=YES when starting these address spaces ensures that the ASIDs associated with them can be reused and can help avoid an IPL. For more information about tuning parameters for the maximum number of ASIDs on a system, see the MAXUSER parameter in z/OS MVS Initialization and Tuning Reference.