SAP Landscape Strategy.docx
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SAP Landscape Strategy.docx
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SAPLandscapeStrategy
Entergy
SAPEnvironmentStrategy,
Managementand
Control
(TheSMCDocument)
Version1.0
TableofContents
Introduction4
Objective4
Approach4
Assumptions4
SAPChangeOverview6
Concepts6
SAPBasics:
InstancesandClients6
Changes:
ClientDependentandClientIndependent6
TransportSystem7
TheDevelopmentPath8
Landscape9
NamingConventions9
SAPSystemID9
ClientID9
LandscapeStrategy11
SAPSystems11
SYSTEMINVENTORY12
SYSTEMESTABLISHMENT12
SAPClientOverview13
PLY-PlayboxSystem13
DDVandRDV-DevelopmentSystems14
DQAandRQA–QualityAssuranceSystems15
DPSandRPS-ProductionSupportSystems16
DPDandRPD-ProductionSystems16
SAPChangeControl17
ChangeTypes17
CustomDevelopment/Enhancement(ClientIndependent)17
Modifications(ClientIndependent)17
Configuration/Customization(ClientDependent)18
Authorizations(ClientDependent)18
ABAPQueries(ClientDependent)19
SAPScript19
SAPForms(PrintWorkbench)19
Corrections(ClientIndependent)19
ChangeSchedule19
CustomObjects&Modifications&Corrections(ClientIndependent)20
Configuration(ClientDependent)20
ClientManagement20
KeepingtheSystemsSynchronized21
ReleasingTransports21
TransportingStrategy22
DevelopmentPhase(Pre-Live)23
LivePhase23
TheChecklogScript24
ClientCompares24
DevelopmentRoles&Responsibilities25
ConfiguratorResponsibilities25
DeveloperResponsibilities25
ObjectModification25
CTSAdministratorResponsibilities26
Transport/CorrectionVerification26
Maintainthetransportsystem26
Release/exporttransports.27
Performimports.27
Maintaintheintegrityoftheclientsacrossthelandscape.27
DataDictionaryAdministrator(DDA)27
TechnologyResponsibilities28
ClientExports28
ClientRefresh28
DBExport/Import28
LandscapeIntegrity28
Appendix29
Terminology29
SystemLandscape29
SAPSystem29
SAPSystemIdentification29
Client29
Customizing29
Development29
TechnicalSettings30
WorkbenchOrganizer30
SystemGroup30
ConsolidationRoutes30
DevelopmentClasses30
SystemChangeOptions30
ClientAttributes31
PLY-PlayboxSystem31
DDVandRDV-DevelopmentSystems31
DQAandRQA–QualityAssuranceSystems32
DPTandRPT–ProductionTestSystems33
DPDandRPD-ProductionSystems33
Introduction
Objective
1.TheobjectiveofthisdocumentistoprovideanoverviewandstrategyfortheSAPEnvironmentfromdevelopmentphasethroughtotheproductivesystem.
2.Thisdocumentisintendedtoprovideimplementationteamswithanunderstandingoftheenvironmentinwhichtheywillwork,howdatawillbeenhancedandmovedthroughdifferentphasesoftheproject,therolesandresponsibilitiesofdifferentgroups,andthedetailedproceduresforcontrollingtheenvironment.
Approach
TheTechnologyTeam’sprimaryapproachtoSAPenvironmentmanagementistousethefacilitiesprovidedbySAP’sCorrectionTransportSystem(CTS)tooltoensureeffectivechangemanagement.TheenvironmentoutlinedinthisdocumentprovidesaframeworkfortheuseofCTS.Inthisenvironment,developerswillusethedescribedguidelinestochangethesystem,theDataDictionary/DatabaseAdministrator(s)willmakeanynecessarymodificationstotheSAPDataDictionary,theCTSAdministrator(s)willexecuteandverifythemovementofobjectsandconfigurationdata,andtheTechnologyTeamwillprovideoverallsupport.
Theguidingprinciplefortheentireapproachtoenvironmentmanagementisflexibility.Thepoliciesandproceduresoutlinedinthisdocumentwillbere-evaluatedandadjustedasneededthroughthelifeoftheproject.
Assumptions
TheSAPLandscapeStrategyproposedinthisdocumentissupposedtoaddressthefollowingbusinessscenario:
⏹all4statescurrentlyservedbyEntergy:
Arkansas,Louisiana,MississippiandTexas.
⏹all5jurisdictionscurrentlyservedbyEntergy:
Arkansas,Louisiana,Mississippi,TexasandNewOrleans.
⏹phasedconversionapproach
Date
State
#ofMeters
Jun-01
Texas
350K
Jul-01
Arkansas
670K
Jan-02
Louisiana
790K
Oct-02
MississippiandNewOrleans
1050K
⏹deregulatedenvironment,withdistributionandretailasseparatebusinessunits,inArkansas,TexasandLouisiana.
⏹regulatedenvironmentinMississippiandNewOrleans.
Consideringallabovementionedbusinessrequirements,therewillbetwoSAPlandscapes:
onefordistributionandanotherforretail.
SAPChangeOverview
Concepts
SAPBasics:
InstancesandClients
AsimpleSAPsystemisknownasanSAPInstance.VisualizeanSAPInstanceasitsowncopyofSAPjustasifitwereanyotherprogram.Eachinstancehasitsowndatabase,binaryfiles,dataetc.TheSAPInstanceisidentifiedbyaSystemID(
WithineachSAPInstance,thereareclients.Clientsareself-containedunitsinSAPInstanceswithseparatemasterrecordsandtheirownsetofdata.TheClientIDisa3digituniqueidentifierwithinanSAPSystem.
WhenonelogsintoSAP,onemustspecifyboththeinstanceandclienttheyarelogginginto.
AdiagramwiththesetofSAPinstancesproposedforEntergycanbeseenonpage11.AnotherdiagramdescribingtheproposedSAPclientswithineachSAPinstancecanbeseenonpage13.
SeeTerminology,onpage29,forfurtherinformationonbasicSAPterminologyandconcepts.
Changes:
ClientDependentandClientIndependent
ChangestoanSAPenvironmentcanbeclassifiedinoneoftwocategories:
ClientIndependent&ClientDependent.Asthenamesindicate,ClientDependentChangesaffectonlyoneclientinanSAPinstance.Thesechangesaretypicallytodata,aseachclientmaintainsitsownset.ClientIndependentChangesaffectalltheclientswithinanSAPinstance.ThesechangesareusuallyABAPprogramsandDataDictionarychangeswithinthesystem.TheoverallperspectiveofanSAPinstanceregardingthemajorcategoriesofclientdependentandindependentdataisdepictedinFigure1below.
Figure1-ClientDependentandClientIndependentData
Note:
Whenobjectsaremigratedacrosssystems,theyhaveatargetinstanceandtargetclientassociatedwiththetransport.ClientIndependentObjectswillchangetheentireinstance(alltheclients),regardlessoftheclientspecifiedinthetransport.Clientdependentchangesmustbeappliedtoeachclientinthetarget(recipient)system.
TransportSystem
Thetransportsystemisusedtotransferobjects(programs,customizingconfiguration)fromoneSAPsystemtoanother,oroneinstanceclienttoanotherbygroupingobjectstogetherinatransport(alsoreferredtoasaChangeRequest).Transportscontainalistofobjectstobemigrated.
SAPhasbuiltinfunctionalitytotrackchangesmadetoitssystemandrecordthesechangesintransports.Thisisaccomplishedviatheworkbenchorganizerandthecustomizingorganizer(Transactions:
SE09&SE10).DevelopmentandCustomizinginSAParefullyintegratedwiththesetwotools,andprovidedtheworkisbeingdoneintheappropriateclientsprescribedinthelandscapestrategy,changestothesystemwillbeautomaticallyrecorded.
Changerequestshelpmanagedevelopmentefforts.Asaconsequenceofincludingdevelopmentobjectsinatransport,theobjectsbecomeprotected(locked)fromotherdevelopersmodifyingthesameobject.Forthemostpart,whenworkingondevelopmentobjects,SAPassignsatransportrequesttotheobjectbeingworkedon.Eachchangerequesthasanowner,andonlytheownermayworkontheobjectlockedbythechangerequest.Thisensuresthatnotwopeopleworkonthesamedevelopmentobjectatthesametime.Inorderforsomeoneelsetobeginworkonthesameobject,thechangerequestfortheobjectmustbereleased,thusreleasingthelockontheobject.(Analternativemethodistochangeownershipofthechangerequest,thenlockingthepreviousownerout).
Changerequestsalsomanageconfigurationefforts.Theyprovideamechanismfortrackingallchangestoconfiguration.Statuscanbecheckedonthetransportstoseewhichpieceshavenotbeenmigratedalongthedevelopmentpath.(seebelow)
Atransportmigrationcanbeseenashavingtwophases:
anexportandanimportphase.Whenallworkontheobjectsinthechangerequesthavebeencompleted,thetransportisreleasedfromthedevelopmentsystem.Releasingatransportinitiatestheexportphase.Exportingcausesallthechangestotheobjectsinthetransporttobewrittenouttoafileintheoperatingsystem.Thisfilecontainsasnapshotoftheobjectsinthetransportatthetimethetransportwasreleased.Nowtheobjectsareunlocked,freeforsomeoneelsetoworkon.Thesecondphaseistheimportintotherecipientsystems.ThisimportisdoneattheOperatingSystemlevel.
ExportingandImportingoftransportsinthesamesequenceonrespectivelysourceandtargetsystemsiscriticaltoensurethecorrectsynchronizationofsuchsystems.KeepingtheSystemsSynchronized,onpage21,providesdetailedinformationonproposedprocedurestoaddressthisissue.
TheDevelopmentPath
DevelopmentProjectsarenottypicallycarriedoutinasinglesystem,butinaseriesofsystemsspanningdevelopmenttotesttoproductionsystems,dependingonprojectsize.Adevelopmentenvironmentismaintainedtoensuretheintegrityoftheproductionsystem.Changestoaproductionsystemshouldbecreatedandtestedbeforetheyaremadeontheproductionenvironmenttopreventerrorsfromenteringthefinalsystem(especiallywhenProductionislive!
).Thisprojecthasdefinedamigrationpaththatallconfigurationanddevelopmentchangesmustfollowtoreachtheproductionenvironment.Thisdevelopmentpathis
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