Natural selectable units provide the option to use selective new or changed Natural features as required instead of completely upgrading Natural.
Selectable units are implemented as NATSUPGM module which is
loaded on request during Natural session start. However, if you want to use
selectable units under CICS TS, you need to perform the optional installation
step described in Selectable Units Module NATSUPGM in
Installing
Natural CICS Interface on z/OS in the
Installation documentation.
To select and activate or deactivate selectable units
Set the SELUNIT profile parameter as described
in the Parameter Reference documentation.
To list all available selectable units and their operational
status
Issue the SHOWSU system
command described in the System Commands
documentation.
The SHOWSU Selectable
Units screen appears with a list of all selectable units
available in your environment and indicates their current status (available
and/or active) as specified with the SELUNIT profile
parameter.
To list active selectable units only
If you only want to list all selectable units that are currently
active in your environment, issue the SYSPROD
system command (see the System Commands documentation).
On the Installed Products screen, enter the line
command SU in the Product Name column next to
Natural.
If a selectable unit is active in your environment, a window opens
indicating the number of the unit and the Natural feature supported by this
unit. Otherwise, the window shows the message No unit
activated.
If you enter the command SU for a
Product Name that does not support Natural selectable
units, a corresponding message appears.