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

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

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DCOLLECT OutputDDCFRSPDDCSHROPDDCVINDXDDCKLENeach control interval in the data portion, not the index portion, of aVSAM data set. This field only applies to ESDS, KSDS, or RRDSVSAM data sets.VSAM Control Interval and Control Area FREESPACE fields usedby the data class. Possible values <strong>for</strong> either field range from 1 to100.DDCCIPCTThis field shows what percentage of each controlinterval in a key-sequenced VSAM data set shouldbe set aside as free space.DDCCAPCT This field shows what percentage of each controlarea in a key-sequenced VSAM data set should beset aside as free space.These fields indicate VSAM Share Options assigned by the dataclass to VSAM data sets.DDCXREG This field shows how a VSAM data set can beshared among regions of one system, or acrossregions of multiple systems. Possible values are 1,2, 3, and 4, if specified <strong>for</strong> the data class.DDCXSYS This field shows how a VSAM data set can beshared among systems. Possible values are 3 and 4,if specified <strong>for</strong> the data class.These fields indicate VSAM Options assigned by the data class toVSAM data sets.DDCIMBED This field indicates whether or not eachsequence-set record is to be written as many timesas possible on the first track of the data controlarea <strong>for</strong> key-sequenced VSAM data sets only. Ifspecified, the following definitions apply.1 IMBED - Write each sequence-setrecord, as many times as possible,on the first track of the data controlarea0 NOIMBED - Put the sequence-setrecords on the same disk thatcontains the index records.DDCREPLC This field indicates whether or not VSAM willwrite each index record on one track of directaccess (DASD) storage as many times as possible.If specified, the following interpretations apply.1 REPLICATE - VSAM will writeeach index record on a single trackof DASD as many times aspossible.0 NOREPLICATE - Each index recordwill appear on a track only once.The KEYLEN field shows, in bytes, the size of each record key in anon-VSAM data set, or the size of each key field in akey-sequenced VSAM data set. Possible values are 0 to 255 <strong>for</strong>non-VSAM data sets and 1 to 255 <strong>for</strong> VSAM data sets.480 z/<strong>OS</strong> <strong>V1R6.0</strong> <strong>DFSMS</strong> <strong>Access</strong> <strong>Method</strong> <strong>Services</strong> <strong>for</strong> <strong>Catalogs</strong>

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