ABCs of z/OS System Programming Volume 3 - IBM Redbooks

5.23 Starting SMS and activating a new configuration
Starting
SMS
Figure 5-23 Starting SMS and activating a new SMS configuration
Starting SMS
To start SMS, which starts the SMS address space, use either of these methods:
► With SMS=xx defined in IEASYSxx and SMS defined as a valid subsystem, IPL the
system. This starts SMS automatically.
► Or, with SMS defined as a valid subsystem to z/OS, IPL the system. Start SMS later, using
the SET SMS=yy MVS operator command.
For detailed information, see z/OS DFSMSdfp Storage Administration Reference,
SC26-7402.
Activating a new SMS configuration
Activating a new SMS configuration means to copy the configuration from SCDS to ACDS
and to the SMS address space. The SCDS itself is never considered active. Attempting to
activate an ACDS that is not valid results in an error message.
You can manually activate a new SMS configuration in two ways. Note that SMS must be
active before you use one of these methods:
1. Activating an SMS configuration from ISMF:
– From the ISMF Primary Option Menu panel, select Control Data Set.
– In the CDS Application Selection panel, enter your SCDS data set name and select 5
Activate, or enter the ACTIVATE command on the command line.
280 ABCs of z/OS System Programming Volume 3
At IPL, with SMS subsystem
defined
Later, SET SMS=zz, with SMS
subsystem defined
Activating a new
SMS configuration