This Natural profile parameter selects and activates or deactivates single or multiple new or changed Natural features supplied as selectable units.
For more information, see Selectable Units for New Natural Features in the Operations documentation.
| Possible settings | OFF |
All selectable units (Natural features) are deactivated; any keyword subparameter settings are switched off. |
|---|---|---|
Un={ON|OFF}
|
One or more selectable units (Natural features) are activated
(ON) or deactivated (OFF) with the keyword
subparameter Un: see
SELUNIT Parameter
Syntax.
The |
|
| Default setting | OFF |
|
| Dynamic specification | yes | |
| Specification within session | no |
The following selectable unit is available on z/OS:
| Unit | Feature |
|---|---|
U1 |
Compression and decompression of Natural threads
by the Natural Roll Server during roll-out and roll-in operations. This reduces
CPU usage by the Natural nucleus, and thus CPU consumption of the hosting TP
system (CICS or IMS TM) or the Natural server (Natural RPC server or Natural
Development Server).
The compression routines run on an IBM System z Integrated Information Processor (zIIP), if available, improving overall performance of Natural. |
The following syntax applies:
| SELUNIT={OFF|({Un={ON|OFF}},...) } |
Where:
n is a number from 1 to 24, each representing a specific feature as announced in Changed/Enhanced Profile Parameters in the current Natural Release Notes for Mainframes.
SELUNIT=(U1=ON,U4=OFF)
