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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 OutputDCVFRAGIDCVLGEXTDCVFREXTDCVFDSCBDCVFVIRSThe fragmentation index, which is a numeric representation of therelative size and distribution of free space on the volume. A largeindex value indicates a high degree of fragmentation.The largest free extent on the volume, expressed in kilobytes.The number of free extents on the volume.The number of free DSCB in the VTOC. This field might not beaccurate <strong>for</strong> a large VTOC.The number of available VTOC index records (VIRs).DCVDVTYP The device type of the volume, <strong>for</strong> example 3390.DCVDVNUM The device number (address) of the volume, <strong>for</strong> example 0A20 or1D01.DCVSTGGPStorage group nameDCVSGLNGDCVSGTCLThe actual length of the storage group name inDCVSGTCL.The storage group name.Data Class Construct FieldThis is the section <strong>for</strong> data class construct in<strong>for</strong>mation. These records are collectedwhen SMSDATA is selected, and data class constructs are defined to the controldata set selected. The record type <strong>for</strong> this record is ’DC’.NameDDCNMFLDDDCUSERDDCDATEDDCTIMEDDCDESCDDCSPECDescriptionThe data class construct name.DDCNMLEN The length of this construct name.DDCNAME The name of this construct.The USERID of the last person to make a change to this construct.The date that this construct was last changed. The <strong>for</strong>mat is″YYYY/MM/DD″ in EBCDIC.The time that this construct was last changed. The <strong>for</strong>mat is″HH:MM″ in EBCDIC.The description of this construct.Data class parameters specification flags. The following areindicated if the specified bit is ’1’.DDCSPEC1DDCSPEC2First byte of flags.DDCFRORGDDCFLRECDDCFRFMDDCFKLENDDCFKOFFDDCFEXPDDCFRETRecord organization specified.LRECL specified.RECFM specified.KEYLEN specified.KEYOFF specified.Expiration date attribute specified.Retention period attribute specified.DDCFPSP Primary space allocation specified.Second byte of flags.Appendix F. Interpreting DCOLLECT Output 477

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