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

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DEFINE CLUSTERvthe data class and need not be specified. If MAXVOLUMES or the spaceparameters (MEGABYTES and KILOBYTES) were not specified, the values in thedata class would be used.LOG(ALL) specifies that changes to the sphere accessed in RLS and DFSMStvsmode can be backed out and forward recovered using external logs.v LOGSTREAMID gives the name of the forward recovery log stream.The DATA and INDEX parameters are:v MEGABYTES, used for DATA, allocates a primary space of 10 megabytes to thedata component. A secondary space of 2 megabytes is specified for extendingthe data component.vKILOBYTES, used for INDEX, allocates a primary space of 25 kilobytes to theindex component. A secondary space of 5 kilobytes is specified for extending theindex component.Define a Key-Sequenced Cluster Specifying Data and IndexParameters: Example 3In this example, a key-sequenced cluster is defined. The DATA and INDEXparameters are specified and the cluster’s data and index components are explicitlynamed. This example assumes that an alias name VWX is defined for the catalogRSTUCAT1. This naming convention causes VWX.MYDATA to be cataloged inRSTUCAT1.//DEFCLU1 JOB ...//STEP1 EXEC PGM=IDCAMS//SYSPRINT DD SYSOUT=A//SYSIN DD *DEFINE CLUSTER -(NAME(VWX.MYDATA) -VOLUMES(VSER02) -RECORDS(1000 500)) -DATA -(NAME(VWX.KSDATA) -KEYS(15 0) -RECORDSIZE(250 250) -FREESPACE(20 10) -BUFFERSPACE(25000) ) -INDEX -(NAME(VWX.KSINDEX) -CATALOG (RSTUCAT1)/*The DEFINE CLUSTER command builds a cluster entry, a data entry, and an indexentry to define the key-sequenced cluster VWX.MYDATA. The parameters for thecluster as a whole are:vvvNAME indicates that the cluster’s name is VWX.MYDATA.VOLUMES is used when the cluster is to reside on volume VSER02.RECORDS specifies that the cluster’s space allocation is 1000 data records. Thecluster is extended in increments of 500 records. After the space is allocated,VSAM calculates the amount required for the index and subtracts it from thetotal.In addition to the parameters specified for the cluster as a whole, DATA andINDEX parameters specify values and attributes that apply only to the cluster’sdata or index component. The parameters specified for the data component ofVWX.MYDATA are:vNAME indicates that the data component’s name is VWX.KSDATA.168 z/OS V1R6.0 DFSMS Access Method Services for Catalogs
DEFINE CLUSTERvvvvKEYS shows that the length of the key field is 15 bytes and that the key fieldbegins in the first byte (byte 0) of each data record.RECORDSIZE specifies fixed-length records of 250 bytes.BUFFERSPACE verifies that a minimum of 25 000 bytes must be provided forI/O buffers. A large area for I/O buffers can help to improve access time withcertain types of processing. For example, with direct processing if the high-levelindex can be kept in virtual storage, access time is reduced. With sequentialprocessing, if enough I/O buffers are available, VSAM can perform aread-ahead, thereby reducing system overhead and minimizing rotational delay.FREESPACE specifies that 20% of each control interval and 10% of each controlarea are to be left free when records are loaded into the cluster. After thecluster’s records are loaded, the free space can be used to contain new records.The parameters specified for the index component of VWX.MYDATA are:vvNAME specifies that the index component’s name is VWX.KSINDEX.CATALOG specifies the catalog name.Define a Key-Sequenced Cluster and an Entry-SequencedCluster: Example 4In this example, two VSAM clusters are defined. The first DEFINE commanddefines a key-sequenced VSAM cluster, VWX.EXAMPLE.KSDS1. The secondDEFINE command defines an entry-sequenced VSAM cluster,KLM.EXAMPLE.ESDS1. In both examples, it is assumed that alias names, VWXand KLM, have been defined for user catalogs RSTUCAT1 and RSTUCAT2,respectively.//DEFCLU2 JOB ...//STEP1 EXEC PGM=IDCAMS//SYSPRINT DD SYSOUT=A//SYSIN DD *DEFINE CLUSTER -(NAME(VWX.EXAMPLE.KSDS1) -MODEL(VWX.MYDATA) -VOLUMES(VSER02) -NOIMBED )DEFINE CLUSTER -(NAME(KLM.EXAMPLE.ESDS1) -RECORDS(100 500) -RECORDSIZE(250 250) -VOLUMES(VSER03) -NONINDEXED )/*The first DEFINE command builds a cluster entry, a data entry, and an index entryto define the key-sequenced cluster VWX.EXAMPLE.KSDS1. Its parameters are:vvvNAME specifies the name of the key-sequenced cluster, VWX.EXAMPLE.KSDS1.The cluster is defined in the user catalog for which VWX has been established asan alias.MODEL identifies VWX.MYDATA as the cluster to use as a model forVWX.EXAMPLE.KSDS1. The attributes and specifications of VWX.MYDATA thatare not otherwise specified with the DEFINE command parameters are used todefine the attributes and specifications of VWX.EXAMPLE.KSDS1.VWX.MYDATA is located in the user catalog for which VWX has beenestablished as an alias.VOLUMES specifies that the cluster is to reside on volume VSER02.Chapter 14. DEFINE CLUSTER 169
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z/OSDFSMS Access Method Services fo
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ContentsFigures . . . . . . . . . .
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Examine Both Components of a Key-Se
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Authorized Program Facility (APF) .
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xz/OS V1R6.0 DFSMS Access Method Se
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xiiz/OS V1R6.0 DFSMS Access Method
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Accessing z/OS DFSMS documents on t
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UNDERSCORED UPPERCASE BOLDFACEUnder
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vvvvWhen the subparameter contains
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owneridcan contain 1 to 8 EBCDIC ch
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xxivz/OS V1R6.0 DFSMS Access Method
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GUARANTEED SPACE=YES in the storage
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JCL DD Statement for a Target Data
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From a Time Sharing Option SessionY
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ALTER LIBRARYENTRYLets you alter al
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The multilevel alias facility enhan
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If this is a generic delete, the or
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The multilevel alias facility and t
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16 z/OS V1R6.0 DFSMS Access Method
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IF-THEN-ELSE Command SequenceThe sy
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If you want to indicate a null THEN
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PARM[TEST({[TRACE][AREAS(areaid[ ar
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SYSIN DD *PARM -TEST -(FULL -(ZZCA
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Common Continuation Errors in Codin
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Table 1. Summary of AMS commands (c
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ALLOCATEvvYou can use the LIKE para
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ALLOCATETable 2. Allocate Command P
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ALLOCATEA Automatic record area buf
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ALLOCATE- AVGREC- SPACEv Expiration
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ALLOCATEKEYLEN(bytes)This is the le
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ALLOCATEvvRECFM(F) or RECFM(F B), t
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ALLOCATEIf you do not use VOLUME an
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ALLOCATEYou cannot use the REUSE pa
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ALLOCATE|||||||||||||||||||||||||||
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ALLOCATEvvFREESPACE and SHAREOPTION
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ALLOCATE//ALLOC JOB ...//STEP1 EXEC
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Chapter 5. ALTERThe ALTER command m
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ALTERType of Catalog EntryCCSIDECSH
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ALTER||Identify a generation data s
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ALTERTYPEIMSIf you want to use BWO
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ALTERIf FILE is not specified, an a
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ALTERLOG(ALL). When you specify LOG
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ALTERTable 4. How NEWNAME Resolves
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ALTERLOGSTREAMIDWhen you use this,
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ALTERSMS-managed volumes, and catal
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ALTER||||||||||||||||should manage.
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ALTERALTER ExamplesNOUPGRADESpecifi
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Alter a Data Set Expiration Date: E
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Chapter 6. ALTER LIBRARYENTRYThe AL
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ALTER LIBRARYENTRYnumslotsIs the nu
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ALTER LIBRARYENTRY||vLIBRARYENTRY a
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Chapter 7. ALTER VOLUMEENTRYThe ALT
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ALTER VOLUMEENTRYyou use this param
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ALTER VOLUMEENTRYcontains commas, s
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ALTER VOLUMEENTRYvvvvvVAL0001: Spec
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Chapter 8. BLDINDEXThe BLDINDEX com
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BLDINDEXnames for the work file DD
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BLDINDEXIf the base cluster’s dat
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BLDINDEXAMP='AMORG'Required.BLDINDE
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Chapter 9. CREATE LIBRARYENTRYThe C
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CREATE LIBRARYENTRY||||||||||||a li
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CREATE LIBRARYENTRY|||||/*SCRATCHTH
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Chapter 10. CREATE VOLUMEENTRYThe C
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CREATE VOLUMEENTRYLIBRARYNAME(libna
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CREATE VOLUMEENTRYshelfa 1-to-32 ch
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CREATE VOLUMEENTRY//CREATVOL JOB ..
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Chapter 11. DCOLLECTThe DFSMS Data
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DCOLLECTDCOLLECT ParametersRACF Aut
Page 143 and 144: DCOLLECTMIGRATEDATArequires collect
Page 145 and 146: DCOLLECTFor example, you might use
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Page 149 and 150: Chapter 12. DEFINE ALIASThe DEFINE
Page 151 and 152: DEFINE ALIAS//DEFUCALS JOB ...//STE
Page 153 and 154: Chapter 13. DEFINE ALTERNATEINDEXTh
Page 155 and 156: DEFINE ALTERNATEINDEXNAME(entryname
Page 157 and 158: DEFINE ALTERNATEINDEXIf you do not
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Page 161 and 162: DEFINE ALTERNATEINDEXWhen you use a
Page 163 and 164: DEFINE ALTERNATEINDEXWhen you use B
Page 165 and 166: DEFINE ALTERNATEINDEXTo ensure data
Page 167 and 168: DEFINE ALTERNATEINDEXWhen UPGRADE i
Page 169 and 170: DEFINE ALTERNATEINDEXv KILOBYTES al
Page 171 and 172: Chapter 14. DEFINE CLUSTERUsing Acc
Page 173 and 174: DEFINE CLUSTERTo avoid potential fa
Page 175 and 176: DEFINE CLUSTERDEFINE RECORDS alloca
Page 177 and 178: DEFINE CLUSTERvvThe storage group t
Page 179 and 180: DEFINE CLUSTERThe size of the contr
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Page 183 and 184: DEFINE CLUSTERSpace is allocated fo
Page 185 and 186: DEFINE CLUSTERnames of the manageme
Page 187 and 188: DEFINE CLUSTERwhere:v MAXLRECL is t
Page 189 and 190: DEFINE CLUSTERintegrity. VSAM ensur
Page 191 and 192: DEFINE CLUSTERAbbreviation: NSPNDSP
Page 193: Define an SMS-Managed Key-Sequenced
Page 197 and 198: DEFINE CLUSTER//SYSIN DD *DEFINE CL
Page 199 and 200: DEFINE CLUSTERThe first DEFINE CLUS
Page 201 and 202: Chapter 15. DEFINE GENERATIONDATAGR
Page 203 and 204: DEFINE GENERATIONDATAGROUP|||||||||
Page 205 and 206: DEFINE GENERATIONDATAGROUPvvvEMPTY
Page 207 and 208: Chapter 16. DEFINE NONVSAMUsing Acc
Page 209 and 210: DEFINE NONVSAMYou can code DEVICETY
Page 211 and 212: DEFINE NONVSAM||||||||||||||||Catal
Page 213 and 214: DEFINE NONVSAM/*VOLUMES(VSER02) ) -
Page 215 and 216: Chapter 17. DEFINE PAGESPACEThe DEF
Page 217 and 218: Optional ParametersCATALOG(catname)
Page 219 and 220: DEFINE PAGESPACEThe storage class p
Page 221 and 222: Define a Page Space in another Cata
Page 223 and 224: Chapter 18. DEFINE PATHThe DEFINE P
Page 225 and 226: DEFINE PATH||||||||||||||||TO(date)
Page 227 and 228: Chapter 19. DEFINE USERCATALOGThe D
Page 229 and 230: DEFINE USERCATALOGspace. You can sp
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Page 233 and 234: DEFINE USERCATALOGWhen no FREESPACE
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Page 237 and 238: DEFINE USERCATALOGData and Index Co
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DELETECLUSTERspecifies that the obj
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DELETETo delete a user catalog when
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DELETEallocate the entry name. Dyna
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DELETERECOVERY|NORECOVERYspecifies
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DELETEremoved has no data sets in t
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Delete a Non-VSAM Data Set’s Entr
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Delete a User Catalog: Example 8In
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DELETEThe second DELETE command rem
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Delete an OAM Collection Name Catal
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Chapter 21. DIAGNOSEThe DIAGNOSE co
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DIAGNOSECOMPAREDS(dsname [ dsname..
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DIAGNOSEJob control language statem
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DIAGNOSE/*DIAGNOSE -VVDS -INFILE(DI
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Chapter 22. EXAMINEThe EXAMINE comm
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EXAMINE//EXAMEX2 JOB//STEP1 EXEC PG
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Chapter 23. EXPORTThe EXPORT comman
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EXPORTDuring CIMODE processing, dat
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EXPORTEXPORT ExamplesAbbreviation:
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Export an Entry-Sequenced Cluster:
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Chapter 24. EXPORT DISCONNECTThe EX
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Chapter 25. IMPORTThe IMPORT comman
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IMPORTOUTFILE(ddname)specifies the
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IMPORTdata set. If the define of an
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IMPORTvvvIf VOLUMES is specified wi
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Import a Cluster Utilizing SMS Keyw
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IMPORTmethod services then redefine
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IMPORTvCATALOG identifies the catal
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Chapter 26. IMPORT CONNECTThe IMPOR
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IMPORT CONNECTvvCONNECT specifies t
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Chapter 27. LISTCATThe LISTCAT comm
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LISTCATINDEXspecifies that entries
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LISTCATAbbreviation: LVLExamples of
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LISTCATLISTCAT ExamplesAbbreviation
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LISTCATList Catalog Entries: Exampl
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|||||||||||||||||Chapter 28. LISTDA
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LISTDATA|||||||||||||||||||||||||||
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LISTDATA|||||||||||||||||||||||||||
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LISTDATA||||||||||||||||||vFILE, wh
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Chapter 29. PRINTThe PRINT command
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PRINTkeys (that is, a portion of th
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PRINTAbbreviation: NODCKTOKEY(key)|
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PRINTIDCAMS SYSTEM SERVICES TIME: 1
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PRINTvCOUNT specifies that 15 recor
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Chapter 30. REPROThe REPRO command
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REPROdisposition of OLD. You can co
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REPRONone of these parameters can b
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REPROThe merge operation can be res
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REPRONOREUSEspecifies that records
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REPROThis section lists and describ
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REPROthe name the key is known by o
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REPROJob control language statement
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Merge Selected Entries (Split) from
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REPROassumed that the input data se
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REPROvvvvvINFILE points to the CRYP
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|||||||||||||||||||||||||||||||||||
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SETCACHE|||||||||||||||||||||||||||
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SETCACHE|||||||||||||||||||||||||||
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SETCACHE|||||||||||||||||||||||||||
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SETCACHE||||vafter SETCACHE SUBSYST
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SETCACHE|||||||||||||||||||||||||||
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Chapter 32. SHCDSUse the SHCDS comm
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SHCDS|vvvRemoving the SMSVSAM serve
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SHCDSLISTRECOVERY(base-cluster)list
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SHCDS||||||||||||||||||||||||||||||
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SHCDSSCHDS Examplespossible for dat
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Chapter 33. VERIFYThe VERIFY comman
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Appendix A. Security Authorization
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Security AuthorizationsTable 6. Req
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Security AuthorizationsTable 10. Re
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Appendix B. Interpreting LISTCAT Ou
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LISTCAT OutputRLS IN USEVSAM QUIESC
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LISTCAT OutputSPLITS-CI (STA)SPANNE
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LISTCAT OutputVOLSER (VLS)VOLUME (V
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LISTCAT OutputHISTORY (HIS)RELEASE
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LISTCAT OutputEntries are identifie
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LISTCAT OutputNOTRKOVFL—The physi
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LISTCAT Outputentryname—The name
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LISTCAT Output||set. When using com
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LISTCAT OutputEXTENT-NUMBER—The n
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LISTCAT Output// VOL=SER=TAPE10,LAB
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LISTCAT OutputLISTCAT Output Listin
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LISTCAT OutputLISTCAT -LEVEL(USER)
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LISTCAT OutputDATA ---------- USER.
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LISTCAT OutputALLOCATIONSPACE-TYPE-
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LISTCAT OutputAIX ----------- USER.
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LISTCAT OutputSTATISTICSREC-TOTAL--
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LISTCAT OutputCLUSTER ------- USER.
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LISTCAT OutputALLOCATIONSPACE-TYPE-
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LISTCAT OutputLISTCAT LEVEL(ZTAMS00
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LISTCAT OutputPATH ---------- USER.
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LISTCAT OutputLISTCAT HISTORY Outpu
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LISTCAT OutputNONVSAM ------- USER.
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LISTCAT OutputWhen the LISTCAT EXPI
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LISTCAT OutputFor LISTCAT VOLUME, a
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Appendix C. Interpreting SHCDS Outp
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SHCDS OutputvvIs not in NON-RLS UPD
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SHCDS OutputSHCDS LISTDS(SYSPLEX.KS
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SHCDS OutputLISTSUBSYSDSThe followi
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SHCDS OutputSHCDS LISTSUBSYSDS(ALL)
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Appendix D. Invoking Access Method
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Invoking from ProgramLOAD and CALL
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Invoking from ProgramARGUMENT LISTO
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Invoking from ProgramEntry and exit
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Invoking from ProgramFigure 32. Arg
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Appendix E. DCOLLECT User ExitUser
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DCOLLECT User ExitIDCDCX1 TITLE ’
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***********************************
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Appendix F. Interpreting DCOLLECT O
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DCOLLECT OutputTable 14. DCOLLECT O
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DCOLLECT OutputTable 15. DCOLLECT D
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DCOLLECT OutputTable 15. DCOLLECT D
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DCOLLECT OutputTable 16. DCOLLECT S
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DCOLLECT OutputTable 17. DCOLLECT M
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DCOLLECT OutputTable 17. DCOLLECT M
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DCOLLECT OutputTable 19. DCOLLECT S
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DCOLLECT OutputTable 20. DCOLLECT B
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DCOLLECT OutputTable 25. DCOLLECT A
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DCOLLECT OutputDCDFLAG2DCDFLAG3DCDD
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DCOLLECT OutputDCDLBKDT The system
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DCOLLECT OutputDCAHURBADCAHARBAThe
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DCOLLECT OutputDCVFRAGIDCVLGEXTDCVF
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DCOLLECT OutputDDCCNTLDDCRETPDDDCVO
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DCOLLECT OutputDDCKOFFDDCCOMPDDCMED
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DCOLLECT Outputmajority of I/O sche
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DCOLLECT OutputDMCRLFDMCGDGFLDMCPEL
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DCOLLECT OutputDMCBKFLGDMCBKFQDMCBK
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DCOLLECT OutputDMCTSLUDMCPERDDMCVSC
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DCOLLECT OutputDBCDUNITDBCSRSTDBCST
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DCOLLECT OutputDSGNMFLDDSGUSERDSGDA
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DCOLLECT OutputDSGABSYSDSGADSYSDSGA
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DCOLLECT OutputDSGOLIBSDSGSSTATThes
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DCOLLECT OutputDDRNSTAT (8)This fie
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DCOLLECT OutputDLBDCLENDLBDCLNMDLBD
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DCOLLECT OutputUBDSNAMUBINCATUBNOEN
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DCOLLECT OutputUCLEVEL Identifies t
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DCOLLECT OutputUTPARTUTEMPTYContain
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Appendix G. AccessibilityUsing assi
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NoticesThis information was develop
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GlossaryThis glossary defines techn
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uffer. A routine or storage used to
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DFSMS environment. An environment t
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programs, it provides a means of ge
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PDSE.See partitioned data set exten
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cache), primary storage (DASD conta
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VVCR.VVDS.See VSAM volume control r
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IndexAaccess method services 83attr
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COMPACTION parameterALTER VOLUMEENT
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entryname subparameter (continued)V
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LIBDEVTYPE parameter (continued)CRE
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NUMBERED parameterDEFINE commandCLU
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security authorization (continued)l
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WRITECHECK parameter (continued)DEF
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Readers’ Comments — We’d Like
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Program Number: 5694-A01Printed in
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