This parameter is valid for the operating environments OS/390, z/OS, VM/ESA, and z/VM only.
| Parameter | Specify . . . | Possible Values | Default |
|---|---|---|---|
| WORKCACHE | whether to enable (YES) or disable (NO) controller caching for the Adabas Work dataset. | YES | NO | YES |
| Value | Meaning |
|---|---|
| YES | The default setting. Work blocks are preread and maintained as long as possible in the caching facilities of the disk controller. |
| NO | Work blocks are not preread or stored. |
If Work blocks are highly scattered or the update frequency is low, controller caching can cause longer I/O response times.
ADARUN caching control parameters also exist for the Associator (ASSOCACHE), Data Storage (DATACACHE), the sort area (WORKCACHE), and the temp area (TEMPCACHE).
Run the nucleus without controller caching for the Work dataset.
ADARUN PROG=ADANUC,WORKCACHE=NO
