SAP BDC Real Time Interview Questions and Answers Part-4, here in this post we are going to provide a list of BDC (Batch Data Communication) Real Time Interview Questions and Answers Part-4. BDC is the process of transferring the data from Non SAP Systems to SAP Systems through using various methods. Refer this post for more details and BDC Interview Questions. Click on Read More.
SAP ABAP BDC Interview Questions
SAP BDC Interview Questions and Answers Part-4, here in this post we are going to provide a list of BDC (Batch Data Communication) Real Time Interview Questions and Answers Part-4. BDC is the process of transferring the data from Non SAP Systems to SAP Systems through using various methods. Refer this post for more details and BDC Interview Questions.
61. What are the types of Batch Input?
Classical Batch Input
Call Transaction
Call Dialog
62. How
can we execute a function in a BDC session?
We can execute a function in a transaction by entering the function code or function key number in the command field of an SAP session. A function key number must be prefixed with the / (slash) character. A function code must be prefixed with the = character.
Example:
BDCDATA-FNAM = 'BDC_OKCODE'
BDCDATA-FVAL = '=UPDA'
63
How can we position the cursor on
a particular field?
BDCDATA-FNAM = ‘BDC_CURSOR’
BDCDATA-FVAL = <FIELDNAME>
64.
Who are Dialog users and who are
Background users?
Dialog users are normal interactive users in the SAP system. Background users are user master records that are specially defined for providing authorizations for background processing jobs.
65. What are the update modes in CALL TRANSACTION?
S : Synchronous
A : Asynchrnous
L : Local
66. What does the message parameter indicates?
The message parameter
indicates there all system messages issued during a CALL TRANSACTION are
written into the internal table <itab>. The internal table must
have the structure of BDCMSGCOLL.
67. What is Direct Input?
To enhance the batch
input procedure, the system offers the direct input technique especially for
transferring large amount of data. This technique doesn’t create sessions but
stores the data directly. The direct input programs must be executed in
the back ground only. To maintain and start these programs, use program
RBMVSHOW or the transaction BMVO.
68. What are the features of Recording
Function ?
Recording transaction
runs, creating batch input sessions from the recorded transaction runs. Generating
a batch input program from the recorded data.
69. How do you set up batch process?
Data analysis: Analyze
the data that is to be transferred to the SAP System.
Generate SAP structures: Generate SAP data structures for incorporation into
your data export program.
Develop transfer program: You can write the program in ABAP/4 or as an external program.
Create sequential file: Export the data that is to be transferred, to a sequential file.
Create batch input program: ABAP/4 batch input program that will read the data to be transferred from the sequential file.
Process batch input data: Process the data and add it to the SAP System. You can do this either by: batch-input session method or Call transaction method.
Analyze results: Check that all data has been successfully processed.
Analyze Error session: Correct and re-process erroneous data.
70. What has to be done to the packed
fields before submitting to a BDC session?
Declare
these fields in the internal table as characters and the length of the field
should be same as the field length of the field's data element. This internal
table is used to hold the data fetched from the sequential file using WS-upload
function module
71. What are acronyms BDC, BI, BTC, BTCI,
CTU, LSMW?
BDC
|
Batch
Data Collection. It's the name of the SAP technology used to record and play
transactions automatically. There are 3 ways to execute BDC: BI sessions,
CTU, CDU.
|
BI
|
Batch
Input. It has the same meaning as BDC. The BI session is one of the 3 ways to
run the BDC technology. Note: remember that BI may also mean Business
Intelligence which is not related to Batch Input at all
|
BTCI
|
Batch
Input. It has the same meaning as BDC.
|
CDU
|
CALL
DIALOG ... USING ... ABAP statement. CALL DIALOG is obsolete. It's one of the
3 ways to run the BDC technology.
|
CTU
|
CALL
TRANSACTION ... USING ... ABAP statement. It's one of the 3 ways to run the
BDC technology.
|
LSMW
|
Legacy
System Migration Workbench. It allows using the BDC recorder and the BI
sessions.
|
72. What
are the differences between CTU and BI session?
Note:
Batch input sessions have other functions not listed here (like keep session,
etc.) because we just discuss of the BDC technology here.
Call
Transaction Using
|
Batch
Input Session
|
The
BDC data is run via ABAP statement CALL TRANSACTION ... USING ...
|
It
is saved to database via ABAP function modules BDC_OPEN_GROUP, BDC_INSERT,
BDC_CLOSE_GROUP, and is later run by SM35 transaction, or by programs
RSBDCBTC or RSBDCSUB. Internally, it does not execute CTU but the kernel
program BDC_START_GROUP
|
Only
one transaction is called
|
Several
transactions can be recorded in one session
|
The
ABAP program must do the error handling itself (note: CALL TRANSACTION
statement returns the messages in an internal table)
|
There
is a built-in error and recovery mechanism in SM35 to view the log of errors
and run the erroneous transactions again (note: the BDC data cannot be
corrected)
|
By
default, standard size is not used
|
By
default, standard size is used (22 lines * 84 columns)
|
Since
7.0, the dates and numbers can be always interpreted correctly during
execution, by indicating in which format they are stored in the BDC data when
you open the BI session
|
|
It's
possible to define SY-CPROG in PROG parameter of BDC_OPEN_GROUP function
module
|
|
Update
mode can be chosen
|
Update
mode is always Synchronous
|
You
may use RACOMMIT of CTU_PARAMS to not stop the BDC at the COMMIT WORK
|
Transaction
execution always stops at COMMIT WORK
|
SY-BINPT
can be set to space using NOBINPT of CTU_PARAMS
|
SY-BINPT
value is always X
|
As
SY-BINPT is reset to 'X' after COMMIT WORK, it can be set to 'X' again using
NOBIEND of CTU_PARAMS
|
Doesn't
apply as BI session always stop after COMMIT WORK
|
Option
CATTMODE of CTU_PARAMS can be used
|
|
All
display modes can be used, including P and S
|
All
display modes can be used except P & S
|
Extended
log, Expert mode, Cancel if log error occurs
|
Recording
(SHDB)
73. How
do I record a Batch Input session for later playback and analysis?
Using
transaction SHDB it is possible to record transactions as well as create
skeleton programs that contain all the necessary code for creating batch input
sessions.
74. Why
SHDB didn't record some screens?
There
was probably a COMMIT WORK. By default, the recording stops after COMMIT WORK
(for more information
When you start the recording, you have a
check box "not possible, but anyway it makes no sense to transport them:
the recordings have no vocation to remain in the system, and are usually
converted into programs or function modules, which are cross-client.
75. How
to copy a recording?
1.
Display
the recording
2.
There is a
button to export to a file on your presentation server
3.
Create a
recording without transaction code and without starting the recorder, a button
to import is then displayed
Note that recordings are client-dependent.
76. How
to transport a recording?
It's
not possible, but anyway it makes no sense to transport them: the recordings
have no vocation to remain in the system, and are usually converted into
programs or function modules, which are cross-client.
77. How does recording work?
It
works the same as CTU with Display Mode "A", but it's surrounded by
kernel calls to SET_TRANS_VAR for activating and deactivating the recording:
among other things, before CTU, there are call 'SET_TRANS_VAR' id 'RECORDING'
field 'X' and CALL 'SET_TRANS_VAR' ID 'ACTIV' FIELD 'X', and after CTU, there
is call 'SET_TRANS_VAR' id 'RECORDING' field ' '.
The main function module for
recording is BDC_RECORD_TRANSACTION, which returns the BDC data. The SHDB
recorder records the BDC data into APQI and APQD tables.
LSMW recorder uses this same technology, but saves the BDC data into /SAPDMC/LSGBDC* tables.
78. What
values may contain BDC_CURSOR?
It
may contain 3 kind of values:
·
A field name:
MARA-MATNR (if several fields have the same name in the outer dynpro, the
BDC_SUBSCR line is needed)
·
A field name
followed by a row number between parentheses, indicating a field in a table
control or step loop (see FAQ about table control scrolling below):
MARA-MATNR(01)
·
Coordinates in
a list (row/column): 07/04
79. What
is CTU_PARAMS?
This
is a structure defined in the ABAP Dictionary (SE11) that must be used to
declare the type of variable after the OPTIONS FROM keyword of CALL TRANSACTION
... USING ... ("CTU") statement. It contains many fields to influence
the CTU behavior.
For more information, refer to CALL
TRANSACTION 'SM04' USING lt_bdcdata MODE 'N'
UPDATE 'S'.
is
the same as:
DATA
ls_ctu_params TYPE ctu_params.
ls_ctu_params-dismode
= 'N'.
ls_ctu_params-updmode
= 'S'.
CALL
TRANSACTION 'SM04' USING lt_bdcdata OPTIONS FROM ls_ctu_params.
80. What
are the commands available for controlling the flow of a BI session?
These
commands are only available in foreground mode (A or E), and they are not
available in CTU.
They are also accessible via the menu under System ->
Services -> Batch Input.
Function
code
|
Meaning
|
Corresponding menu
item in System menu -> Services -> Batch Input
|
/bbeg
|
Restart transaction
|
|
/bdel
|
Delete current
transaction from batch input from session (log can still be seen but it can
never be restarted)
|
Delete transaction
|
/n
|
Terminate current
transaction, mark the transaction as incorrect, and pass to next transaction
|
Next transaction
|
/bda
|
Change
the screen Processing from Error only mode to all display mode (Foreground
processing)
|
Process
in Foreground
|
/bde
|
Change
the display mode from All screens to Error only
|
Display
Errors Only
|
/bend
|
End
current batch input session completely
|
Cancel
|
Read Part One of BDC Interview Questions and Answers
Dear ABAPers if you know any Real Time Interview Questions Please provide the questions in below comment box it'll helpful for the fellow novice ABAPers.
"You found the information helpful and want to say thanks? Your donation is enough to inspire us to do more. Thanks a bunch!"
Posted in: ABAP Interview Questions, ALE-IDOC-Interview-Questions, BAPI-Interview-Questions, BDC, BDC Interview Questions, BDC-Interview-Questions, Cross-Applications, Module-Pool-Programming, Object-Oriented-ABAP-Interview-Questions, RFC-Interview-Questions, SAP-BADI-Interview-Questions, SAP-Enhancements, SAP-Exits
0 comments:
Post a Comment
Note: Only a member of this blog may post a comment.