topic Re: BDC Batch input session method in Application Development and Automation Discussions

BDC Batch input session method

Former Member — Thu, 13 Dec 2007 11:44:12 GMT

Hi ,

I am new to SAP progamming. Pls let me know the basics of BDC Batch Input session method and Call transaction method. I want to know the pros and cons of both methods with justification. Please help me in this regarding.

Re: BDC Batch input session method

Former Member — Thu, 13 Dec 2007 11:47:24 GMT

BDC:

Batch Data Communication (BDC) is the process of transferring data from one SAP System to another SAP system or from a non-SAP system to SAP System.

Types of methods :

1 .Session Method

2 . CALL TRANSACTION

3. DIRECT INPUT

Session method :

Features:

Asynchronous processing.

Synchronous Processing in database update.

Transfer data for more than one transaction.

Batch input processing log will be generated.

During processing, no transaction is started until the previous transaction has been written to the database.

CALL TRANSACTION METHOD :

This is another method to transfer data from the legacy system.

Features:

Synchronous processing. The system performs a database commit immediately before and after the CALL TRANSACTION USING statement.

Updating the database can be either synchronous or asynchronous. The program specifies the update type.

Transfer data for a single transaction.

Transfers data for a sequence of dialog screens.

No batch input processing log is generated.

For BDC:

http://myweb.dal.ca/hchinni/sap/bdc_home.htm

https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/bdc&;

http://www.sap-img.com/abap/learning-bdc-programming.htm

http://www.sapdevelopment.co.uk/bdc/bdchome.htm

http://www.sap-img.com/abap/difference-between-batch-input-and-call-transaction-in-bdc.htm

http://help.sap.com/saphelp_47x200/helpdata/en/69/c250684ba111d189750000e8322d00/frameset.htm

http://www.sap-img.com/abap/learning-bdc-

http://www.sapbrain.com/TUTORIALS/TECHNICAL/BDC_tutorial.html

see this link

session method is preferable if amount of records are more as it takes more time

call transaction takes less time directly uploading into database used when records are less

Whenever we transfer Large amount of data we will Prefer using the Session method: bcoz

1. Process is divided into two steps Generate session and process session.

2. Error log is generated.

3. Only processing transactions can be run in Background using RSBDCSUB.

Whenever you want to process a transaction and based on the Result you want to process another transaction we must use Call transaction method. Bcoz

1. It will return SY-SUBRC after each Call transaction unlike session method.

2. We can handle the messages using BDCMSGCOLL

3. Supports asynchronous proecessing.

4. Errors can be handled using Session method

Message was edited by:

p498863

Re: BDC Batch input session method

Former Member — Thu, 13 Dec 2007 11:55:19 GMT

Hi,

Session method.

1) synchronous processing.

2) can tranfer large amount of data.

3) processing is slower.

4) error log is created

5) data is not updated until session is processed.

Call transaction.

1) asynchronous processing

2) can transfer small amount of data

3) processing is faster.

4) errors need to be handled explicitly

5) data is updated automatically

Check these link:

http://www.sap-img.com/abap/difference-between-batch-input-and-call-transaction-in-bdc.htm

http://www.sap-img.com/abap/question-about-bdc-program.htm

http://www.itcserver.com/blog/2006/06/30/batch-input-vs-call-transaction/

http://www.planetsap.com/bdc_main_page.htm

Session method:

1. Data migration is done in two steps .. Generate session and Process session.

So resouces can be used efficiently. good for bulkdata migration.

2. Session method generates error log when u process a session.

3. No SY-SUBRC can be returned after each transaction is called.

4. Provides synchronous Updation only...

Call transaction method:

1. Data migration is done in single steps ..bcoz Transactions are called immediately after filling BDCDATA table. So good for small amount of data.

2. We have to collect error messages using BDCMSGCOLL Table

3. Returns SY-SUBRC and Messages ..after each Call Transaction..very useful feature for further processing based on the Status and Messages..

4. Supports Asynch or Synch Updation.

Example code for session method

Here is the porgram for Purchase order

REPORT zmm0069 NO STANDARD PAGE HEADING

MESSAGE-ID z0

LINE-SIZE 132

LINE-COUNT 65(2).

----

Internal Tables *

----

*Internal table for the purchasing info records fields.

DATA: BEGIN OF i_inforecord OCCURS 0,

matnr(18),

lifnr(10),

uom(3),

ekgrp(3),

planned_time(3),

under_tol(3),

over_tol(3),

qty(10),

price_cat(5),

inco(3),

designation(28),

netpr(13),

scale_qty1(10),

scale_pr1(13),

scale_qty2(10),

scale_pr2(13),

scale_qty3(13),

scale_pr3(10),

scale_qty4(13),

scale_pr4(10),

scale_qty5(13),

scale_pr5(10),

scale_qty6(13),

scale_pr6(10),

scale_qty7(13),

scale_pr7(10),

scale_qty8(13),

scale_pr8(10),

scale_qty9(13),

scale_pr9(10),

scale_qty10(13),

scale_pr10(10),

END OF i_inforecord.

Internal table for Old and New Vendor number

DATA : BEGIN OF i_lfb1 OCCURS 1,

lifnr(10),

altkn(10),

END OF i_lfb1.

Declare internal table for Call Transaction and BDC Session

DATA: i_bdc_table LIKE bdcdata OCCURS 0 WITH HEADER LINE.

----

Global Variables *

----

DATA: g_counter(2) TYPE n,

g_field_name(18) TYPE c,

zc_yes TYPE syftype VALUE 'X'.

----

Selection Screen *

----

SELECTION-SCREEN BEGIN OF BLOCK a WITH FRAME TITLE text-001.

PARAMETERS: p_fname1 TYPE localfile .

SELECTION-SCREEN SKIP 1.

SELECTION-SCREEN BEGIN OF BLOCK b WITH FRAME TITLE text-002.

PARAMETERS: p_rloc1 AS CHECKBOX DEFAULT 'X'.

SELECTION-SCREEN BEGIN OF BLOCK c WITH FRAME TITLE text-003.

PARAMETERS p_group(12) OBLIGATORY DEFAULT 'ZPURCHINFO'.

SELECTION-SCREEN END OF BLOCK c.

SELECTION-SCREEN END OF BLOCK b.

SELECTION-SCREEN END OF BLOCK a.

**WRITE the report header

TOP-OF-PAGE.

INCLUDE zheading.

----

Start of selection *

----

START-OF-SELECTION.

Load Input file

PERFORM f_load_input_file.

Create BDC records.

PERFORM create_bdc_records .

&----

*& Form Create_BDC_records

&----

Perform the BDC for the records in the internal table

----

FORM create_bdc_records .

IF NOT i_inforecord[] IS INITIAL.

Open BDC session

PERFORM open_bdc_session.

SELECT lifnr altkn FROM lfb1 INTO TABLE i_lfb1

FOR ALL ENTRIES IN i_inforecord

WHERE altkn = i_inforecord-lifnr.

Sorting the Internal table for better performance

SORT i_lfb1 BY altkn.

LOOP AT i_inforecord.

***Mapping Old Vendor number to the new Vendor number

READ TABLE i_lfb1 WITH KEY altkn = i_inforecord-lifnr BINARY

SEARCH.

IF sy-subrc EQ 0.

i_inforecord-lifnr = i_lfb1-lifnr.

ENDIF.

CLEAR i_bdc_table[].

PERFORM insert_screen_header.

call transaction 'ME11' using i_bdc_table
mode 'A'.
CLEAR i_bdc_table.

ENDLOOP.

CLEAR i_inforecord[].

PERFORM close_bdc_session.

Release the BDC sessions created

PERFORM release_bdc.

ENDIF.

ENDFORM. " open_group

&----

*& Form bdc_dynpro_start

&----

Start the screen for the transfer of fields

----

FORM bdc_dynpro_start USING p_g_program_1

p_g_screen.

CLEAR i_bdc_table.

i_bdc_table-program = p_g_program_1.

i_bdc_table-dynpro = p_g_screen.

i_bdc_table-dynbegin = 'X'.

APPEND i_bdc_table.

ENDFORM. " bdc_dynpro_start_start

&----

*& Form bdc_insert_field

&----

Insert field *

----

FORM bdc_insert_field USING f_name f_value.

IF f_value <> space.

CLEAR i_bdc_table.

i_bdc_table-fnam = f_name.

i_bdc_table-fval = f_value.

APPEND i_bdc_table.

ENDIF.

ENDFORM. "bdc_insert_field

&----

*& Form open_bdc_session

&----

Open a BDC session

----

FORM open_bdc_session .

Open BDC session and create and update records

CALL FUNCTION 'BDC_OPEN_GROUP'

EXPORTING

client = sy-mandt

DEST = FILLER8

group = p_group

HOLDDATE = FILLER8

keep = 'X'

user = sy-uname

RECORD = FILLER1
PROG = SY-CPROG
IMPORTING
QID =

EXCEPTIONS

client_invalid = 1

destination_invalid = 2

group_invalid = 3

group_is_locked = 4

holddate_invalid = 5

internal_error = 6

queue_error = 7

running = 8

system_lock_error = 9

user_invalid = 10

OTHERS = 11

IF sy-subrc <> 0.

MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

ENDFORM. " create_bdc_session

&----

*& Form insert_screen_header

&----

Screen flow for the transfer of fields

----

FORM insert_screen_header .

First Screen 100

PERFORM bdc_dynpro_start USING 'SAPMM06I' '0100'.

PERFORM bdc_insert_field USING:'BDC_CURSOR' 'EINA-LIFNR',

'BDC_OKCODE' '/00',

'EINA-LIFNR' i_inforecord-lifnr,

'EINA-MATNR' i_inforecord-matnr,

'EINE-EKORG' '1000',

'RM06I-NORMB' zc_yes.

****----

*******

Next Screen 101

PERFORM bdc_dynpro_start USING 'SAPMM06I' '0101'.

PERFORM bdc_insert_field USING : 'BDC_CURSOR' 'EINA-MAHN1',

'BDC_OKCODE' '/00',

'EINA-MEINS' i_inforecord-uom.

****----

*******

*Next Screen 102

PERFORM bdc_dynpro_start USING 'SAPMM06I' '0102'.

PERFORM bdc_insert_field USING : 'BDC_CURSOR' 'EINE-INCO2',

'EINE-APLFZ' i_inforecord-planned_time,

'EINE-EKGRP' i_inforecord-ekgrp,

'EINE-NORBM' i_inforecord-qty.

PERFORM bdc_insert USING 'EINE-UEBTK' ' '.

PERFORM bdc_insert_field USING:'EINE-PEINH' i_inforecord-scale_qty1,

'EINE-BPRME' i_inforecord-uom,

'EINE-UNTTO' '5',

'EINE-UEBTO' '25',

'EINE-MEPRF' i_inforecord-price_cat,

'EINE-NETPR' i_inforecord-netpr,

'EINE-INCO1' i_inforecord-inco,

'EINE-INCO2' i_inforecord-designation.

Checking for Scale quantities

IF i_inforecord-scale_qty2 = space.

PERFORM bdc_insert_field USING 'BDC_OKCODE' '=BU'.

PERFORM insert_bdc_new.

ELSE.

PERFORM bdc_insert_field USING 'BDC_OKCODE' '=KO'.

****----

*******

Next Screen 201

PERFORM bdc_dynpro_start USING 'SAPMV13A' '0201'.

PERFORM bdc_insert_field USING : 'BDC_CURSOR' 'RV13A-DATAB',

'BDC_OKCODE' '=PSTF'.

****----

*******

Next Screen 201

PERFORM bdc_dynpro_start USING 'SAPMV13A' '0201'.

PERFORM bdc_insert_field USING : 'BDC_CURSOR' 'KONP-KSCHL(01)',

'BDC_OKCODE' '=PSTF',

'RV130-SELKZ(01)' zc_yes.

****----

*******

LAST SCREEN 303

PERFORM bdc_dynpro_start USING 'SAPMV13A' '0303'.

PERFORM bdc_insert_field USING : 'BDC_CURSOR' 'KONM-KBETR(03)',

'BDC_OKCODE' '=SICH'.

Counter to Loop the Item level entry

g_counter = 0.

PERFORM scale_entry USING i_inforecord-scale_qty2

i_inforecord-scale_pr2.

PERFORM scale_entry USING i_inforecord-scale_qty3

i_inforecord-scale_pr3.

PERFORM scale_entry USING i_inforecord-scale_qty4

i_inforecord-scale_pr4.

PERFORM scale_entry USING i_inforecord-scale_qty5

i_inforecord-scale_pr5.

PERFORM scale_entry USING i_inforecord-scale_qty6

i_inforecord-scale_pr6.

PERFORM scale_entry USING i_inforecord-scale_qty7

i_inforecord-scale_pr7.

PERFORM scale_entry USING i_inforecord-scale_qty8

i_inforecord-scale_pr8.

PERFORM scale_entry USING i_inforecord-scale_qty9

i_inforecord-scale_pr9.

PERFORM scale_entry USING i_inforecord-scale_qty10

i_inforecord-scale_pr10.

PERFORM insert_bdc_new.

ENDIF.

ENDFORM. " insert_screen_header

&----

*& Form insert_bdc

&----

Insert BDC

----

FORM insert_bdc_new .

CALL FUNCTION 'BDC_INSERT'

EXPORTING

tcode = 'ME11'

POST_LOCAL = NOVBLOCAL
PRINTING = NOPRINT
SIMUBATCH = ' '
CTUPARAMS = ' '

TABLES

dynprotab = i_bdc_table

EXCEPTIONS

internal_error = 1

not_open = 2

queue_error = 3

tcode_invalid = 4

printing_invalid = 5

posting_invalid = 6

OTHERS = 7

IF sy-subrc <> 0.

MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

CLEAR i_bdc_table[].

ENDFORM. " insert_bdc

&----

*& Form close_bdc_session

&----

Close the BDC session

----

FORM close_bdc_session .

CALL FUNCTION 'BDC_CLOSE_GROUP'

EXCEPTIONS

not_open = 1

queue_error = 2

OTHERS = 3.

IF sy-subrc <> 0.

MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

ENDFORM. " close_bdc_session

&----

*& Form f_load_input_file

&----

Upload the file

----

FORM f_load_input_file.

Check always Local file for upload

IF p_rloc1 = zc_yes.

CALL FUNCTION 'WS_UPLOAD'

EXPORTING

filename = p_fname1

filetype = 'DAT'

TABLES

data_tab = i_inforecord

EXCEPTIONS

conversion_error = 1

file_open_error = 2

file_read_error = 3

invalid_type = 4

no_batch = 5

unknown_error = 6

invalid_table_width = 7

gui_refuse_filetransfer = 8

customer_error = 9

OTHERS = 10.

IF sy-subrc <> 0.

MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

STOP.

ENDIF.

ENDFORM. " f_load_input_file

&----

*& Form release_bdc

&----

Release the session

----

FORM release_bdc.

SUBMIT rsbdcsub WITH mappe EQ p_group

WITH von EQ sy-datum

WITH bis EQ sy-datum

WITH fehler EQ '.'

EXPORTING LIST TO MEMORY

AND RETURN.

ENDFORM. " release_bdc

&----

*& Form scale_entry

&----

Populate the Scale quantities

----

-->P_SCALE_QTY
-->P_SCALE_PRICE

----

FORM scale_entry USING p_scale_qty

p_scale_price.

Increment the Counter

g_counter = g_counter + 1.

IF p_scale_qty <> space.

CONCATENATE 'KONM-KSTBM(' g_counter ')' INTO g_field_name.

PERFORM bdc_insert_field USING g_field_name p_scale_qty.

CONCATENATE 'KONM-KBETR(' g_counter ')' INTO g_field_name.

PERFORM bdc_insert_field USING g_field_name p_scale_price.

ENDIF.

ENDFORM.

&----

*& Form bdc_insert

&----

To uncheck the Unlimited (UEBTK)

----

FORM bdc_insert USING f_name f_value.

CLEAR i_bdc_table.

i_bdc_table-fnam = f_name.

i_bdc_table-fval = f_value.

APPEND i_bdc_table.

ENDFORM. " bdc_insert

Reward points if it is usefull ....

Cheers,

Chandra Sekhar.

Re: BDC Batch input session method

Former Member — Thu, 13 Dec 2007 12:01:22 GMT

Hi,

Please reward points if helpful.

(1) Typical Uses of Batch Input

• Transferring data from another system while installing SAP System

• Regularly transferring data that is captured into Non-SAP system into SAP system

(2). Overview of Batch Input Procedure

• Data Analysis

• Create Data file

• Write Batch Input Program

• Process Batch Input data

• Analyze results

• Aalyze error session

(3 ) Data Analysis

• Find the transaction code

• Fields that are required / mandatory

• Fields that can be allowed to default to standard values

• The names, types, and lengths of the fields that are to be updated

• The identifiers of the functions that need to be called to have the transaction process the batch input data.

(4) Collecting Transaction & Field Info

• Determine the transaction name by choosing System -> Status.

• Step through the transaction, entering the data and performing the functions that are required

• On each screen, note the program name and screen no. Display these by choosing System -> Status.

• For field, check box, and radio button, press F1 and then choose Technical info. Note the field name for batch input

• The length and data type of field is available by double-clicking on the Data element field.

• Find identification code for each function (button or menu) that is to be executed to process the batch input data.

(5) Collecting Transaction & Field Info

Other Methods :

a. Using Screen Painter and Menu Painter to Get Field and Function Info

b. Recording transaction runs using transaction SHDB

6 Create Data File

• Data File must be TEXT ONLY file (preferably TAB delimited)

• Sequence of field values must be same as in program

• All data should be in character format.

• Date fields must be in format set in user profile

7 Writing Batch Input Program

a. Reading data from the text file.

b. Perform data conversions or error-checking.

c. Prepare the data for batch input processing by storing the data in the batch input data structure, BDCDATA.

d. generate a batch input session for classical batch input, or process the data directly with CALL TRANSACTION USING.

8 Batch Input Method

A Create Session in Batch Input Queue

b. Call Transaction Using

c. Call Dialog

What is the difference between batch input and call transaction in BDC?

Session method.

1) synchronous processing.

2) can tranfer large amount of data.

3) processing is slower.

4) error log is created

5) data is not updated until session is processed.

Call transaction.

1) asynchronous processing

2) can transfer small amount of data

3) processing is faster.

4) errors need to be handled explicitly

5) data is updated automatically

Batch Data Communication (BDC) is the oldest batch interfacing technique that SAP provided since the early versions of R/3. BDC is not a typical integration tool, in the sense that, it can be only be used for uploading data into R/3 and so it is

not bi-directional.

BDC works on the principle of simulating user input for transactional screen, via an ABAP program.

Typically the input comes in the form of a flat file. The ABAP program reads this file and formats the input data screen by screen into an internal table (BDCDATA). The transaction is then started using this internal table as the input and executed in the background.

In ‘Call Transaction’, the transactions are triggered at the time of processing itself and so the ABAP program must do the error handling. It can also be used for real-time interfaces and custom error handling & logging features. Whereas in

Batch Input Sessions, the ABAP program creates a session with all the transactional data, and this session can be viewed, scheduled and processed (using Transaction SM35) at a later time. The latter technique has a built-in error processing mechanism too.

Batch Input (BI) programs still use the classical BDC approach but doesn’t require an ABAP program to be written to format the BDCDATA. The user has to format the data using predefined structures and store it in a flat file. The BI program then reads this and invokes the transaction mentioned in the header record of the file.

Direct Input (DI) programs work exactly similar to BI programs. But the only difference is, instead of processing screens they validate fields and directly load the data into tables using standard function modules. For this reason, DI programs are much faster (RMDATIND - Material Master DI program works at least 5 times faster) than the BDC counterpart and so ideally suited for loading large volume data. DI programs are not available for all application areas.

thanks

Sivaparvathi

Re: BDC Batch input session method

Former Member — Thu, 13 Dec 2007 12:08:32 GMT

check the following thread for most of the details of bdc methods.

Reward points if useful.