Transport
system of SAP objects is a component that enables the controlled movement of
software configurations, developments, and customizations across different
systems in a landscape. It ensures deployment of changes from development to
testing, quality assurance, and ultimately to production systems.
There
are several steps involved while particular objects is being moved. Proper
sequence and list of the steps executed depends on what type of objects are
present in the transport request (TR).
Some of the
ABAP steps are performed in the SAP system. These are:
- ABAP
Dictionary activation (A)
- Distribution
of ABAP Dictionary objects (S)
- Table
conversion (N)
- Matchcode
activation (M)
- Import of
application objects (D)
- Update of
version management (U)
- Execution
of XPRAs (R), XPRA = EXecution of PRograms After import or Executable Program for Repair and
Adjustment
When
there is a transport request being imported into target systems following steps
are executed:
Step Program
(ABAP prg/OS level cmd) executing step
SHADOW_IMPORT() OS
cmd: R3trans
DD IMPORT (H) OS cmd: R3trans
DD ACTIVATION (A) ABAP
prg: RDDMASGL
DISTRIBUTION OF DD OBJECTS (S) ABAP prg: RDDDIS0L
TBATG CONVERSION OF DD OBJECTS (N) ABAP prg: RDDGEN0L
tpmvntabs OS
cmd: tp
MAIN IMPORT (I) OS
cmd: R3trans
tpmvkernel (C) OS
cmd: tp
TBATG CONVERSION OF MC OBJECTS (N) ABAP prg: RDDGEN0L
IMPORT OF SELFDEFINED OBJECTS (D) ABAP prg: RDDDIC1L
VERSION UPDATE (V) ABAP
prg: RDDVERSL
EXECUTION OF REPORTS AFTER PUT (R) ABAP prg: RDDEXECL
Transport related jobs
(RDD*) jobs:
Job/ABAP
program RDDIMPDP (or JOB_RDDNEWPP) - a dispatcher (transport
deamon) program for transport activities running within NetWeaver/ABAP platform
based systems. It receives information from the external transport program (OS
level programs) tp and R3trans via table TRBAT. The job is normally scheduled
by ABAP program RDDNEWPP.
Shadow import – SAP system upgrade relevant only. It
importss the upgrade data into Customizing tables, as well as the transport
requests of add-ons, support packages, and languages.
DD import – is a phase where the Data Dictionary
(DDIC) objects are imported into the target system during the transport
process. The DDIC objects include data elements, tables, views, domains, and
other dictionary-related components.
DD activation - Job/ABAP program RDDMASGL - runs Data Dictionary
Activation, if there is an object in the TR has Data Dictionary object and it
was imported before, during Data Dictionary Import.
DISTRIBUTION OF DD
OBJECTS - Job/ABAP program RDDDIS0L – phase where the Distribution tasks related to DDIC objects
are performed during the transport process. This phase handles the distribution
and activation of DDIC objects across the SAP system landscape. RDDDIS0L runs
the report RDDGENBB, if the transport request object list has at least one DDIC
object, its DDIC import and DDIC activation already happened and the object has
to be adopted on database level. Table structures are changed if necessary.
TBATG CONVERSION OF DD
OBJECTS - Job/ABAP program RDDGEN0L - this phase refers to the conversion of DDIC objects
during the transport process. It is the conversion from the original system
format to a format of the target system.
Tpmvntabs - phase is responsible for updating
the database tables related to transport management in the target system. During
this phase, the transport tool performs various tasks related to transport
management tables to ensure their consistency and synchronization with the
transported objects. These tables store information about TR, their status,
logs, and other relevant data.
MAIN IMPORT - phase where the actual objects
contained in the TR are imported into the target system. Tasks like object
integration, object activation, dependency resolution, conflict resolution and
post-import activities are executed.
TBATG CONVERSION OF MC
OBJECTS - Job/ABAP program RDDGEN0L - this phase refers to the conversion of Modifiable
Customizing (MC) objects during the transport process. This phase is
responsible for converting the MC objects from the original system format to a
format suitable for the target system. Modifiable Customizing objects are
system-specific configurations and settings that can be customized by
customers. These objects are typically maintained in client-dependent tables
and are specific to individual systems. During the transport process, these
objects need to be converted to make them compatible with the target system.
Tpmvkernel -
IMPORT OF SELFDEFINED
OBJECTS - Job/ABAP program RDDDIC1L – it does import of ADO (Application Defined Objects) from
table TRBAT.
VERSION UPDATE - Job/ABAP program RDDVERSL - refers
to the process of updating the version information of the transported objects
in the target system. This phase ensures that the system recognizes and tracks
the correct versions of the imported objects.
EXECUTION OF REPORTS
AFTER PUT - refers to
the execution of specific reports or programs after the objects contained in
the transport request have been successfully imported and applied to the target
system. Job/ABAP program RDDEXECL - runs as Method Execution (XPRA), if
an application has their own object in the transport object list and it was
imported during Main Import, and their application specific
method/function/program has to run.
Other ABAP programs related
to transports:
RDDPROTT - displays the log for a specific
transport request. Used by t-code SCTS_LOG -Transport Log Overview.
RDDFDBCK - import feedback process, Message
After Exporting or Importing Requests
RDDDIC3L - deleting obsolete or no longer
required entries from the transport request buffer in the SAP system.
RDDMNTAB - runs a move nametab, for a new ABAP
objects that were imported, their runtime objects have to be put in the active
runtime environment.
RDDDIC0L – Exports ADO (Application Defined Objects)
objects
RDDDIC1L – Imports ADO objects
RDDDIC3L - Generates ABAP programs and screens
RDDVERSE –Version Management: Version at
Export
Important tables:
TRBAT - it forms the interface between the
transport control program tp and the SAP system. To trigger an ABAP step, tp
writes control information to this table. The JOB_RDDNEWPP phase schedules the
event-driven background job.
TRBATS - Communication Table for Deployment
Control
TRJOB - Job ID (e.g. 07444600) that is running
at some point of time in teh SAP systems is entered in this table.
More information:
Change
and Transport system
2147060 - Import steps not specific
to transport request
