topic Re: Parallel Processing batch input in Application Development and Automation Discussions

Parallel Processing batch input

Former Member — Tue, 13 May 2008 10:24:27 GMT

hello, i have problem ...

it possible work batch input in parallel processing ? ?

Re: Parallel Processing batch input

matt — Tue, 13 May 2008 11:01:53 GMT

Technically yes. But it depends on what the transaction is, and how it maintains locking. If two parallel processes try to update the same object at the same time, one will fail, as it couldn't get a lock.

Re: Parallel Processing batch input

Former Member — Tue, 13 May 2008 11:14:01 GMT

they come carried out of the insert on the same table, as I can proceed with ?

Re: Parallel Processing batch input

Former Member — Tue, 13 May 2008 11:14:55 GMT

me you can write the code with which I can send more sessions parallel than batch inpu

Re: Parallel Processing batch input

matt — Tue, 13 May 2008 16:42:37 GMT

Nicola - don't ask for solutions to problems via email. If we discuss on the forums, all can benefit.

There are many blogs and articles about how to implement parallel processing - use the search function available in SDN. I understand English isn't your first language, but I'm unlikely to be able to make things clearer for you. The SAP help files have very good information - and this might be available in your first language,

matt

Re: Parallel Processing batch input

Former Member — Tue, 13 May 2008 16:47:26 GMT

my problem.

have 1 file in input..

open 1 session "batch input"

work file

close session

my new program,

work in parallel multi session "batch input"

you know solution ?

Re: Parallel Processing batch input

Former Member — Tue, 13 May 2008 16:49:33 GMT

FORM AGGIORNA.

PERFORM PRELEVA_FILE.

*perform controlli_preliminari.

PERFORM R7000-OPEN-BI. " open sessione batch input

LOOP AT TB_FILE.

REFRESH ALL_TABLES.

CLEAR ALL_TABLES.

PERFORM DETERMINA_TABELLA_COND.

READ TABLE TB_CAMPI WITH KEY CAMPO = 'RV130-SELKZ'.

VN_RIGA = SY-TABIX.

VN_TABIX = SY-TABIX.

PERFORM READ_CAMPO.

READ TABLE ALL_TABLES WITH KEY KOTAB = VA_CAMPO.

IF SY-SUBRC NE 0.

MESSAGE E000 WITH 'Tabella sequenza '

VA_CAMPO 'inesistente'.

ENDIF.

VN_RIGA = SY-TABIX.

PERFORM R7100-CHARGE-TAB-BDC USING:

CA_START_DYNPRO 'SAPMV13A' '0100',

CA_FIELD_DYNPRO 'RV13A-KSCHL' VA_KSCHL,

CA_FIELD_DYNPRO CA_OK_CODE '=ANTA'.

CONCATENATE 'RV130-SELKZ(' VN_RIGA ')' INTO VA_FIELD.

PERFORM R7100-CHARGE-TAB-BDC USING:

CA_START_DYNPRO 'SAPLV14A' '0100',

CA_FIELD_DYNPRO VA_FIELD 'X',

CA_FIELD_DYNPRO CA_OK_CODE '=WEIT'.

CONCATENATE '1' ALL_TABLES-KOTABNR INTO VN_DYNPRO1.

PERFORM ALTRE_VIDEATA USING VN_DYNPRO1.

ENDLOOP.

PERFORM R7010-CLOSE-BI. " Close sessione batch input

MOVE VN_ELAB TO VN_RECELAB.

ENDFORM. " AGGIORNA

Re: Parallel Processing batch input

matt — Tue, 13 May 2008 18:18:52 GMT


> my problem.
> have 1 file in input..
> open 1 session "batch input"
> work file
> close session
> 
> my new program,
> work in parallel multi session "batch input"
> 
> you know solution ?

This is the solution:

Read the file into an internal table.

Break the file into smaller internal tables.

For each smaller table use CALL FUNCTION STARTING NEW TASK and the principles of parallel processing as described in SAP HELP, blogs and articles on SDN.

The function module is an RFC enabled function module. It has as parameters all the information it needs to create a batch session With the data it has been sent it opens a batch input session.

I cannot write the code for you.

matt

Re: Parallel Processing batch input

Former Member — Wed, 14 May 2008 08:25:06 GMT

I have not understood, I must create a function and use CALL FUNCTION STARTING NEW TASK, every time I want to call that it in parallel, or CALL FUNCTION STARTING NEW TASK the use on the session of batch input

Re: Parallel Processing batch input

matt — Wed, 14 May 2008 11:44:10 GMT

You MUST go and read and understand the SAP Help about parallel processing. Also try and read some of the blogs about it. At the moment, I'm afraid your basic understanding is not sufficient. This is a relatively advanced ABAP topic.

If, having read the help and the blogs, you still can't do it, then you need to have help, on site, from a senior developer. It is not going to be solved on this forum.

matt