IBM大型机培训资料之OS

OS390&z/OSAnIntroduction第1页WhatisIBMMainframe?Mainframe–Large,Powerful,CentralcomputercapableofsupportingmanyhundredsorthousandsofuserssimultaneouslyIBMMainframe–SpecifytheseriesofcomputersproducedbyIBM第2页AdvantagesReliabilityRecoverabilityRedundancyConnectivityConcurrencyCapacitySecurityCompatibility...第3页History1960sSystem360OverallServicesOver10modelsofferedArchitectureinnovationsforfutureupwardcompatibilityBase-registeraddressingmodeMicroprogramming1970sSystem370MVSVirtualStorage(24-bit)Multi-processingTwocompatibleproductlines30XX-largesystems43XX-mid-rangesystems第4页History1980sSystem370/XAMVS/XAVirtualStorage(31-bit)Expandedstorageaddedto3090model-anewformofprocessorstorage,separatefrommainstorageMid1980sESA370(EnterpriseSystemArchitecture)Accesstodataspaces-anotherformofvirtualstorageMVS/ESAVirtualStorage(N*2G)第5页History1990sESA390andSystem390ESCON-EnterpriseSystemConnections-fiberopticI/OParallelSysplex-couplingcapableprocessors21stCenturyZOSVirtualStorage(64-bit)IntelligentResourceDirector(IRD)第6页OS390ArchitectureDB2TSOSDFIICICSSDSFDITTOTCP/IPNETVIEWRACFDFSMSVTAMJES2OS/390第7页z/OSArchitectureSoftcopyServicesSystemsManagementnon-VSAMVSAMHFSDB2IMS/DBIMS/TMCICSSystemServicesTSOBatchUNIXAPPCSTCApplicationsApplicationEnablementUNIXSystemServicesNetw.Comp.ServicesDistributedComputingSecureWaySecurityServicesCommunicationsServerLANServices第8页MajorElementsDFSMSStorageManagementDataManagementDeviceManagementSDSFSystemDisplayandSearchFacilityOptionalfeatureofOS/390Monitor,manageandcontrolMVS/JES2systemTSOTimeSharingOptionAllowsuserstointeractivelysharecomputertimeandresources第9页MajorElementsDITTODataInterfileTransferTestingandOperationsUtilityAllowsuserstodisplay,modify,delete,copy,printphysicalrecordsofaVSAMorsequentialfileNETVIEWIBM’sfoundationforenterprisemanagementNetworkmanagementproductsprovidestoolsformanagingcomplexmulti-vendornetworksfromasinglepointofcontrolSDFIIInteractivetoolHelpsyoudevelopandmaintainpanels,panelgroups,partitionsetsandcontroltables第10页MajorElementsVTAMVirtualTelecommunicationsAccessMethodProvidesinterfacebetweenapplicationsinahostprocessorandotherresourcesinanSNAnetworkTCP/IPJES2JobEntrySubsystemProvidesfunctionstogetjobsinto,andoutputoutoftheOS/390systemRACFResourceAccessControlFacilityComponentoftheOS/390securityserver第11页RACFLogonUserIdentificationandVerificationRACFDatabaseResourceAuthorizationCheckingLoggingandReportingAdministrationSystemWithRACFGeneralUsersAccessRequestAccessRequestAccessCICSTransactionIMSTransactionDataSetTapeVMMiniDiskResourcesAccessViolationViolationLookatProfileandSetLoggingAUDITORSecurityAdministrationSPECIALSMFReportAccessEvent第12页MajorElementsUNIXSystemServicesApplicationServicesEnablestwoopensystemsinterfacesontheOS/390operatingsystem:AnApplicationProgramInterface(API)AninteractiveOS/390shellinterface第13页UniprocessorCentralProcessorMVSStorageChannelSubsystem第14页MultiProcessorMVSStorageChannelSubsystemCPCPCPCP第15页PartitioningMultiprocessorStorageCSSCPCPCPCPMVSMVSStorageCSS第16页LogicalPartitioning-LPARStorageCSSCentralProcessorMVSMVSStorageCSSPR/SM第17页SYSPLEXXCFSYSPLEXXCFSINGNALINGPATHSSYSPLEXXCFXCFXCFCOUPLEDATASET第18页SystemInitializationLoadParmsfromSYS1.PARMLIBMembersfromSYS1.NUCLEUSInitialProgramLoadBuildfirstaddressspacesandothersystemaddressspacesInitialmastercatalogandsystemdatasets第19页LoadParameterLOADADDRESSXXXXSYSRES VOLUME ADDRESSLOADPARM DDDDXXSNIODFVOLUMEADDRESSLOADXXMESSAGESUPPRESSIONS: SuppressMessageP: SuppressMessagePromptM: DisplayMessagesA: DisplayMessagesPromptN:1–9NUCLEUSIEANUC0n第20页LoadIPLLoadnucleusLoadselectedmembersofSYS1.NUCLEUSNucleusInitializationProgram(NIP)receivescontrolfromtheIPLprogramLocatemastercatalogandotherdatasets第21页BuildAddressInitializeMVSusingSYS1.PARMLIBIEASYS0XBuildfirstaddressspaceCreateLinkPackAreaSettheCSAandSQAboundariesCreatetheMasterScheduleraddressAddressspaceCREATEroutinesMasterTraceTabletraceOS/390consolemessage第22页BuildAddressPRIVATEExtendedCSAExtendedLPAsExtendedSQANUCLEUSSQALPAsCSAPRIVATECOMMONSYS1.LPALIBSystemandUserWorkAreaSystemTablesandControlBlocks第23页CreateotherAddressSpacesMasterSchedulerPC/AUTHTraceGRSDUMPSRVIOSASConsoleLLAVLFAPPCASCHRACFRMFCatalog第24页

AdditionalSystemAddressSpacesJESSMSVTAMDB2TSOCICS...第25页SystemDatasetsMasterCatalogSYS1.PARMLIBIODFSYS1.PROCLIBSYS1.NUCLEUSSYS1.LPALIBSYS1.LINKLIBSYS1.SVCLIBSYS1.MANxSYS1.LOGRECSYS1.DAESYS1.DUMPPAGEDATASET第26页StorageManagerRSM(RealStorageManager)ASM(AuxiliaryStorageManager)VSM(VirtualStorageManager)第27页PhysicalandVirtualStorageCentralStorage(MainStorage)ExpandedStoragePageDataSetsPLPACommonLocalVirtualStorageAddressSpaceDataSpaceHiperspace第28页StorageStructure

CPCACHECentreStorageEXPANDEDDASDCACHEDASD/CARTRIDGETAPE第29页AddressSpaceLayoutExtendedLSQA/SWA/229/230ExtendedUserRegionExtendedCSAExtendedPLPA/FLPA/MLPAExtendedSQAExtendedNucleusNucleusSQAPLPA/FLPA/MLPACSAUserRegionLSQA/SWA/229/230PSAExtendedPrivateExtendedCommonCommonCommonPrivate第30页SwappingandPagingPaging:Theprocessofbringinactiveportionsofaprogramfromauxiliarystorageintomainstorageandmovingpreviouslyactiveportionoutofmainstoragetoauxiliarystorage

PageOutPageInSwapping:Tomaintainasupplyoffreepageframes,MVStransfersalltheactivepagesofaddressspacesinandoutofanauxiliarystorage,whenthedemandformemoryisparticularlyhigh

SwapOutSwapIn第31页DataSpacesvs.HiperspacesDataSpacesHiperspacesAccessAccessregistersMacrosReferenceByte4KBlockStorageResidencyCentral,expandedandauxiliaryExpandedandauxiliaryLanguageSupportAssembleronlyAssemblerandHigh-level第32页z/OSStorageManagement64-bitlongaddressNoexpandedstorage第33页DataManagementCatalogProcessingDASDVolumeOrganizationAllocatingNewDASDDataSetsSMSFacilities第34页CatalogsMASTERCATALOGAliasesSystemDataSetsUSERCATALOGUserDataSets第35页CatalogSearchOrder//STEPCAT//JOBCATAliasesinUSERCATMasterCatalog第36页DASDVolumeOrganizationVTOCVolumeTableofContentsDescribesthecontentsofthedirectaccessvolumeContainsentriescalledDSCBsVTOCIndex–providesimprovedperformanceVVDS–DescribesVSAMdatasetinformation第37页SMSFacilityDFSMSdfpDFSMSdssDFSMShsmDFSMSrmm第38页DatasetTypesPhysicalSequential(PS)PartitionedDataSet(PDS)PartitionedDataSetExtended(PDS/E)VirtualStorageAccessMethod(VSAM)LinearDataSet(LDS)RelativeRecordDataSet(RRDS)EntrySequencedDataSet(ESDS)KeySequencedDataSet(KSDS)……第39页JobManagementTheJobEntrySubsystem(JES)isresponsibleformanagingjobsinanOS/390system第40页JobPhasesInputConversionProcessingOutputHardcopyPurge第41页InputPhaseAlluserjobsenterthesystemfromaJES2-controlledreaderAcquiresspoolspaceforthejobSyntaxcheckstheJOBstatementSpoolsJCLandSYSINdataforthejobRecordsthejobasbeinginthesystem第42页ConversionPhaseMergesinvokedprocedureJCLintothejobstreamCheckstheresultingjobstreamforsyntaxerrorsSubstitutesdefaultvaluestouncodedJCLparametersConvertsandstoresJCLasconverter/interpretertext第43页ProcessingPhaseToassistuserjobsinaccomplishingtheirwork,JES2Selectsjobsforinitiationandexecutionbasedon:InitiatoravailabilityJobCLASSSelectionPRIORITYJES2spools/de-spoolsforthejobsandmonitorsjobduration第44页OutputPhaseJES2optimizestheutilizationofunitrecorddevicesandsimplifiestheiroperationGroupsthejob’sSYSOUTdatasetaccordingtooutputclassandcharacteristicsoftheSYSOUTdatasets第45页HardcopyPhaseSelectsSYSOUTdatasetsaccordingto:AvailabilityofthedevicesOutputclassCharacteristicsoftheSYSOUTdatasetTranscribesthedatatoline-modeprintersandpunchersInteractswithPSF,whichtranscribesthedatatomodeprinters第46页PurgePhaseWhenallofajob’sSYSOUThavebeentranscribed(orcancelled):Itsspoolspaceisreclaimedforre-useThejobdisappearsfromthesystem第47页WorkManagementServicesofSupervisorLinkageSearchorderDispatchingInterruptHandlingSupervisorCallsInter-addressspacecommunicationsSerialization第48页BalancingResourcesI/OAUXILIARYPROCESSORRESPONSETURN-AROUNDTHROUGHPUT第49页BalancingResourcesSystemResourceManager(SRM)WorkLoadManagement(WLM)WorkModez/OSdeliverstheIntelligentResourceDirector(IRD).It'sanewconcept.Insteadofassigningapplicationstoaresource,itassignsresourcestotheapplication.第50页ManagingWorkSystemManagementFacilityDatacollectioncomponentofOS/390Recordssystemandjob-relatedinformationResourceManagementFacilityMonit