z/OS V1R6.0 DFSMS Access Method Services for Catalogs

SETCACHE|||||||||||||||||||||||||||||||||||||||||||||||Notes:1. This parameter should only be used as a last resort because nodestage occurs and data could be lost.2. The PENDINGOFF parameter must be used with eitherSUBSYSTEM or DASDFASTWRITE, and is accepted only ifSUBSYSTEM OFF or DASDFASTWRITE OFF failed. That is, whenthe PENDINGOFF parameter is used with DASDFASTWRITE, thedevice must be in the DEACTIVATION PENDING state. When thePENDINGOFF parameter is used with SUBSYSTEM, the subsystemmust be in the DEACTIVATION FAILED state (see LISTDATASTATUS). Otherwise, the command is rejected.3. PENDINGOFF is not available for NVS. If NVS OFF does notobtain the desired result, issue a DASDFASTWRITE PENDINGOFFto each device where DASD fast write is in a deactivation pendingstate. NVS OFF should then work.Special Purpose Optional ParametersThe following parameters are not to be issued concurrently with the optionalparameters described previously, or with each other, unless otherwise noted.DISCARDPINNED|DESTAGE|REINITIALIZE|SETSECONDARY(devid)|SUSPENDPRIMARY|SUSPENDSECONDARY|RESETTODUPLEX|REESTABLISHDUPLEX(devid)|RESETTOSIMPLEXspecifies operations pertaining to dual copy.DISCARDPINNEDspecifies that all pinned cache fast write data and DASD fast write data for thespecified volume is discarded.Abbreviation: DPIN.Note: DISCARDPINNED can be issued to an offline device by using theUNITNUMBER parameter.DESTAGEspecifies that a destage to DASD of all modified tracks in the cache and NVS isto be scheduled.Abbreviation: DESTGREINITIALIZEcauses a cached Storage Control subsystem to unconditionally establish orreestablish all caching status on the subsystem status devices. (This is areconfiguration of the subsystem, setting all caching status to its defaultvalues.) REINITIALIZE requires the use of the UNITNUMBER parameter,because all devices must be offline before the command is executed.REINITIALIZE also resets all CCAs and DDCs to the initial installation values(direct translation).Abbreviation: RINIT or REINITNotes:1. The REINITIALIZE parameter terminates dual copy logical volumes(duplex pairs).2. Ensure that other operating systems are not accessing the target subsystembefore using the REINITIALIZE command.3. The REINITIALIZE parameter causes pinned data to be lost.330 z/OS V1R6.0 DFSMS Access Method Services for Catalogs