AL08 Global User overview (Lists all the users of all the instances of the SAP system)AL11 Display CCMS operating system filesAL12 Buffer synchronizationDB02 Missing database objects and space requirementsDB13 Scheduling (Used for scheduling various standard jobs like checkdb, backups etc)FILE This tcode is related to archiving. This is used to map assignment between logical andphysical namesOSS1 SAP service marketplace logonPFCG Used for Role maintenanceRZ01 Graphical background job scheduling monitorRZ03 This is control panel for operation modes and server states. Operation mode can bechosen using this TcodeRZ04 Used for maintenance of operation modes and instancesRZ10 Used for profile maintenance and changing SAP parameter valuesRZ20 Alert MonitorRZ21 Alert monitor customizingSA38 To execute an ABAP programSALE IMG Application Link EnablingSCC1 Copy client via transport requestSCC3 Client copy LogSCC4 Client AdministrationSCC5 Delete ClientSCC6 ClientImportSCC7 Client Import post processingSCC8 Client ExportSCC9 Remote Client copySCCL Local Client copy

SE01Transport OrganizerSE03Workbench Organizer ToolsSE06Set up workbench organizerSE07Display status of transport systemSE09Workbench OrganizerSE10Customizing Organizer. This is used to view transport requests based on type, user etcSE16Display table contentsSICKSAP Initial installation consistency checkSM01Used to lock transactionsSM02To post system messages in case of planned or scheduled downtime of SAP systemsSM04Local user list (It means it lists users belonging to only that instance you have selected)SM12Used to display and delete SAP locksSM13Used to display update recordsSM21System log. It contains very important system messages and will be useful fortroubleshooting most of the issuesSM28SAP Initial installation consistency check (Same as SICK tcode)SM30Call view maintenanceSM31Table maintenanceSM35Batch Input MonitoringSM36Schedule Background JobsSM37Overview of background jobsSM50Overview of work processesSM51Overview of InstancesSM56Number range buffersSM58Asynchronous RFC error logSM59RFC connections maintenance like creation, modification etc

SM63Display/Maintain Operation ModesSM64Used to trigger an eventSM66Global work process overviewSM69Maintain external operating system commandsSMLGUsed for Logon group maintainanceSMLIUsed for Language ImportSMLTUsed for Language AdministrationSP01Spool control. Used to view spool related detailsSP02Used to display output request detailsSP11Temse table of contentsSP12TemSe AdministrationSPADSpool Administration and Printer ConfigurationSPAMSAP Support Pack Manager( Used for performing SAP support pack upgrade)SPAUDisplay modified objects in the runtime environmentThis tcode is used during SAP support pack upgradeSPDDDisplays modified DDIC objectsThis tcode is used during SAP support pack upgradeSPROCustomizing : Initial ScreenST01SAP system traceST02Used to view all the SAP R/3 buffer statisticsST03Used to perfrom workload analysisST04Used to view various statistics of RDBMS activitiesST05Used to take SQL TraceST06Operating system MonitorST07Application MonitorST10Table call StatisticsST11Display developer tracesST22ABAP runtime error analysis. Analysis of dumpsSTMSTransport Management SystemSTUNR/3 Performance MenuSU01User MaintenanceSU01DUser DisplaySU10Mass changes to User masters. Mass user maintenance