Generic DataSource using FM - Delta doubt

Hi All,
I have few doubts on Generic DataSource Delta.
I am working on one HR requirement. where I need to pull the Mandatory courses information.
to get this done, we have created one Generic DataSource using Function Module.
FM has huge and complex logic, at present it is taking long time when I run in RSA3, if I continue with this to BI, daily running FULL load to BI is not suggestible, because it takes much time to load.
I have planned to set the Delta, just want to know what would be the best option to set the delta option for this requirement? and how? I have 2 dates (Course Start and End dates), Employee, Course Id, Course Type, Position, Job, etc in my DS structure.
Please suggest someone so that I can do FULL load once in BI and continue with Delta without missing any delta records going forward.
Regards,
Kiran

Hi,
In mystrucure used dates are not relating to aedat and erdat, they are CHAR type. here the requirement is little different.
Regards,
Kiran

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Creating a Generic Datasource using Function Module

Hi Guru's
              We are tryin to create a Generic datasource using function module, we have found few old how to guides for doing the same but it is not effective and need to be altered. Can anyone suggest me the latest step by step procedure to create the above, also if you have the how to guide kindly paste the link as it will be a great help at this point.
Thanks in advance
Regards
Liquid

Hi,
Please goto the Following links :-
                                                                      PDF
1)         http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/c062a3a8-f44c-2c10-ccb8-9b88fbdcb008?quicklink=index&overridelayout=true
2)        http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a0f46157-e1c4-2910-27aa-e3f4a9c8df33?quicklink=index&overridelayout=true
                                                 SAP Forum
3)        Re: DataSouce based on FM
4)       http://forums.sdn.sap.com/post!reply.jspa?messageID=10050614
5)       https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a0f46157-e1c4-2910-27aa-e3f4a9c8df33
6)       Re: Generic datasource with functional module
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Generic Datasource with Additive Delta

Hi all
I have a question.
In whic case can I use a generic datasource with additive delta?
Does this delta mode make sens only with function module extraction?
If I extract data directly from a table, can I use this delta mode only if a field represents changes?
Thanks for your help!
S.

Stefania,
    To my knowledge what you are thinking is wrong.
we have 2 Methods for Generic DS.
1. New status for changed Records.
2. Additive delta.
New status for changed records means
New Order
order no    quantity
1000          10
order changed to quntity 8. then 2 records will posted 2 BW in first case.
1000          -10
1000            8
if you come to Additve delta.
for the same case it will send the same record as
1000          10
changed records
1000          -2
this is the difference. New status with changed records should be used only in association with ODS not cube becoz we don't have overwrite option.
Additive delta we can use for ODS and Cubes with update mode Addition.
Hope this is clear.
Regards,
Nagesh Ganisetti.

Generating a Generic DataSource using Function Modules

I am attempting to create a generic DataSource using a function module. All of our DataSources are business content or custom generated that involve views. At least in our company this is true. Is there any resources available to me with examples on how to do this. I have looked at SAP's 'simple example' and would need a ABAP/BW Guru to figure it out! Any help would be greatfull. Thanx. JJ

Hi Jerry,
The simple example should provide you with the necessary requisite. All what you need to do is to
create your own extract structure and assign that as type for the table parameter e_t_data.
Now you will get the selection criteria, as well as the fields selected in the datasource from the 2 incoming tables. You need to write the necessary abap code to execute a query and populate your extract struture.
Once important peculiarity of this function module is that it is called several times, or as many times as the MAX parameter + 1. ie, once for each row fetched. Hence you will find a persistence method of using a CURSOR with HOLD property to retain the data between the function calls.
The help in generic datasource explains the 3 modes,
initialize, first call and the repeat call for the
function module. The simple function module example actually provides the necessary logic to deal with these modes and the example uses the sflight table.
Hope that is some information that could help u begin with.
Anoop C M

Generic DataSource using function module

Hello experts,
I created a generic dataSource using copy of function module RSAX_BIW_GET_DATA. It is syntactilly correct. But when I execute and debug associated generic DataSource in RSA3, this generic function module could not identify DataSource(i_isource) and update mode(i_updmode).
Could you please answer what went wrong?
I also created by using copy function module RSAX_BIW_GET_DATA_SIMPLE. I did not find above such problem. The generic DataSource is executed fine in this case.
Thanks in advance,
Zak.

http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/c062a3a8-f44c-2c10-ccb8-9b88fbdcb008
/people/p.renjithkumar/blog/2009/10/07/generic-datasource-creation-using-function-module

Can anybody explain me creating Generic Datasource using Function module?

Hi,
can anybody explain me creating Generic Datasource using Function module?
Thax in advance,
Ravi.

Generic Extraction via Function Module
/people/siegfried.szameitat/blog/2005/09/29/generic-extraction-via-function-module
1. Create s structure with the fields that you need from the 4 tables . Activate.
2. Goto SE 80 Select The Function Group , Copy , Select the Function module
" RSAX_BIW_GET_DATA_SIMPLE " and Give a New name starting With
Y or Z .
3. SE37 ->Your Function module name -> Change , In table tab give your structure
name by deleting the associated type given in " E_T_DATA " .
4. Now select source code and Do the coding . Give Data source name in Coding .
In your case you have to take data from more that 1 table .
5. Activate the Function Group .
6. In RSO2 Create the Data source , Give the Function Module Name , And Save.
7. RSA3 -> Give data source name and Check for the Records .
Creation of custom datasource. (Using function module)
<b>is an example</b>
1.Create a function group .
2. Structure ZTEST123
ZMATNR MATNR CHAR 18 0 Material Number
ZMTART MTART CHAR 4 0 Material type
ZMBRSH MBRSH CHAR 1 0 Industry sector
ZMATKL MATKL CHAR 9 0 Material group
ZBISMT BISMT CHAR 18 0 Old material number
ZMAKTX MAKTX CHAR 40 0 Material description
3. Create function module (i.e. ZTEST.) .
FM - YMARA_DATA_TRNS
FUNCTION YMARA_DATA_TRNS.
""Local Interface:
*" IMPORTING
*" VALUE(I_REQUNR) TYPE SRSC_S_IF_SIMPLE-REQUNR
*" VALUE(I_DSOURCE) TYPE SRSC_S_IF_SIMPLE-DSOURCE OPTIONAL
*" VALUE(I_MAXSIZE) TYPE SRSC_S_IF_SIMPLE-MAXSIZE OPTIONAL
*" VALUE(I_INITFLAG) TYPE SRSC_S_IF_SIMPLE-INITFLAG OPTIONAL
*" VALUE(I_READ_ONLY) TYPE SRSC_S_IF_SIMPLE-READONLY OPTIONAL
*" TABLES
*" I_T_SELECT TYPE SRSC_S_IF_SIMPLE-T_SELECT OPTIONAL
*" I_T_FIELDS TYPE SRSC_S_IF_SIMPLE-T_FIELDS OPTIONAL
*" E_T_DATA STRUCTURE ZTEST123 OPTIONAL
*" EXCEPTIONS
*" NO_MORE_DATA
*" ERROR_PASSED_TO_MESS_HANDLER
data : ZTEST123 type ZTEST123 occurs 0 with header line.
Maximum number of lines for DB table
STATICS: S_S_IF TYPE SRSC_S_IF_SIMPLE,
S_COUNTER_DATAPAKID LIKE SY-TABIX.
DATA: begin of t_mara occurs 0,
ZMATNR type MATNR,
ZMTART type MTART,
ZMBRSH type MBRSH,
ZMATKL type MATKL,
ZBISMT type BISMT,
end of t_mara.
DATA: begin of t_makt occurs 0,
ZMATNR type MATNR,
ZMAKTX type MAKTX,
end of t_makt.
Initialization mode (first call by SAPI) or data transfer mode
(following calls) ?
IF I_INITFLAG = SBIWA_C_FLAG_ON.
Check DataSource validity
CASE I_DSOURCE.
WHEN 'ZZMARA_DATA'.
WHEN OTHERS.
IF 1 = 2. MESSAGE E009(R3). ENDIF.
this is a typical log call. Please write every error message like this
LOG_WRITE 'E' "message type
'R3' "message class
'009' "message number
I_DSOURCE "message variable 1
' '. "message variable 2
RAISE ERROR_PASSED_TO_MESS_HANDLER.
ENDCASE.
Fill parameter buffer for data extraction calls
S_S_IF-REQUNR = I_REQUNR.
S_S_IF-DSOURCE = I_DSOURCE.
S_S_IF-MAXSIZE = I_MAXSIZE.
ELSE. "Initialization mode or data extraction ?
Data transfer: First Call OPEN CURSOR + FETCH
Following Calls FETCH only
First data package -> OPEN CURSOR
IF S_COUNTER_DATAPAKID = 0.
Determine number of database records to be read per FETCH statement
from input parameter I_MAXSIZE. If there is a one to one relation
between DataSource table lines and database entries, this is trivial.
In other cases, it may be impossible and some estimated value has to
be determined.
select MATNR
MTART
MBRSH
MATKL
BISMT
from mara up to 10 rows
into table t_mara.
if not t_mara[] is initial.
select MATNR
maktx
from makt
into table t_makt
for all entries in t_mara
where matnr = t_mara-zmatnr.
endif.
loop at t_mara.
read table t_makt with key zmatnr = t_mara-zmatnr.
ZTEST123-zmatnr = t_mara-zmatnr.
ZTEST123-ZMTART = t_mara-ZMTART.
ZTEST123-ZBISMT = t_mara-ZBISMT.
ZTEST123-ZMBRSH = t_mara-ZMBRSH.
ZTEST123-ZMATKL = t_mara-ZMATKL.
ZTEST123-zmaktx = t_makt-zmaktx.
append ZTEST123.
clear ZTEST123.
endloop.
clear E_T_DATA.
refresh E_T_DATA.
E_T_DATA[] = ZTEST123[].
ENDIF.
S_COUNTER_DATAPAKID = S_COUNTER_DATAPAKID + 1.
ENDIF. "Initialization mode or data extractio
ENDFUNCTION.
3. Create the data source using transaction (RSO2).
4. If structure exists for the table parameter of your function module then ok else create a structure for the table parameter E_T_DATA.
5. Test the datasource in R/3 using transaction RSA3.
6. Transfer the data source to BW System and replicate it in the BW-System.

Creating generic datasource using function module in R/3 4.6c

Hi,
I am not able to see the option (in TC RSO2) to create generic datasource using function module in R/3 4.6c. Is there any special plug in or some SAP Note to be applied to get the option ?
Waiting for a quick response.
Thanks and Regards,
Deepak

Hi Sat,
Thanks for the reply.
I know that creating generic datasource from function module is available in R/3 4.7.
In 4.6c version there are only two options available. They are Extraction from DB View and Extraction from SAP Query.
The third option i.e. Extraction from Function Module is not available in 4.6c. I wanted to know if there is any plugin that needs to be installed to get this option.
Thanks and Regards,
Deepak

Problem while creating generic DataSource using table

Hello all,
I am creating a generic DataSource using table EKBE. It is giving error " invalid extract structure template EKBE ". The reason is " The system tried to generate an extract structure with the template structure EKBE. This operation failed, because the template structure quantity fields or currency fields, for example, field MENGE refer to a different table (EKPO)".
Could you suggest how to approach?
Thanks,
Zak.

hi zahir,
In your case the reference table used for quantity is ekko and the field is meins.
and the reference table used for currency is ekpo and the field is waers.
So you are not taking data from a single table. so you better create a view give the table name ekbe and select the corresponding fields you want.
Add MEINS and WAERS and as well your required field in the view for example Zview and for Quantity field mention Zview as reference table and reference field as MEINS same for WAERS.
try this if it doent work, tell me what error you are facing.
with regards!
ramesh

Generic DataSource using InfoSet on BI 7.0

Hi gurus,
I need to extract data from a InfoCube through a generic DataSource. I have created an InfoSet Query based on this InfoCube and I have noticed this kind of InfoSet is not the same that is used by Tcode RSO2.
Does anybody know if there is any way to get this vai generic DataSource?
I need to get data from Infocube because de Delta Control must be the package number.
Thanks in advance,
Silvio Messias.
P.S.: The version of my environment is 7.0.

Hi Ashok,
Into the Tcode RSO2 (Generic DataSource) I have the option to collect data from an InfoSet. This InfoSet must be created through Tcode SQ02, right?
I woult like to get data from a Infoset Query based on InfoCube, created through RSA1 on BI 7.0.
Is there any way to do it?
Thanks for your help,
Silvio Messias.

Error when extraction with generic datasource using function model

Hi,experts,When i check the error log in bw side for one egeneric datasource from R/3 side , it shows all the data from the datasource has been extracted ,and the error lies in the data selection .But when I use the Tcode RSA3 to check the datasource to check the functionality of selection ,its seems ok .
Could and I give me some clue ?

Hi,
Seems function module checks the selection in the infopackage while loading the data. Could you check if there is any selection which is expected but not given in the infopackge or incorrectly given.
Hope this helps.
Regards,
Viren

Generic Datasource using Infosets

Dear Experts
What can be the problems we face when we do Generic Extraction based on Infosets in ECC or R/3 and what are the other alternatives to this one?
Thanks for your inputs,
Regards,
NJ

Hi,
Please check :
Infoset Datasource
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Identifying the target system using FM extraction in a Generic Datasource

Hi all,
We are using a Generic datasource using FM for extraction from R/3 system to BW system. This Function module picks data from a Z table! After each successful delta extraction from the table, a flag field is set to identify whether the data is pulled or not.
We are about to use BO data services which is connected to the R/3 system to fetch data. For capturing delta records after the BW run has happened, the table can be added a new flag field to pull delta for Data services.
Is there any way to identify which target system's extraction is running particularly in the function module (for e.g., if BW extraction is triggered or BODS extraction is triggered) so as to set the respective target flag in the Z table?
Regards,
vivek

Leandro,
The calling program of your FM should have a local variable I_RLOGSYS which is populated with the BW server ID.
If you don't know how to access a variable in a program that is in call stack using field symbols, search SDN.
I haven't tested this, so you may have to explore a little.
Good luck.

Delta for generic extraction using FM

Hi All,
I am trying to create generic datasource using function module. I need to set delta functionality for this DS but I don't know how to set delta for FM.
Do I need to give delta specific field in RSO2? My delta specific field is either AEDAT or ERDAT? Is it possible? how to write code for this?
I have around 13 tables & there is no stadard DS for these table so is it correct way to use generic using FM or is there any other way?
plz suggest & if u have any step by step document for FM plz provide.

Hi Manesh,
Yes you need to set up your delta enabled field in RSO2 when you click the delta button for the datasource.
Usually for generic datasources we use any date field to genarete deltas and looks like you have the same (AEDAT and ERDAT a re date fields).
You dont need to write any code for this. Just provide any field for executing delta and initialize. It will get you the delta based on the date.
In some scenarios, we get postings happening on an older date and hence dates cannot be used, in those scenarios we can go by numeric pointer.
Creating a datasource on 13 tables, i ma not sure how efficient it would be (mainly depends on the data volume on these tables) but yah writing a function module will be fine.
Let me know in case of any clarification
Thanks
Sachin

Generic Datasource with Fuction Module with delta on Created Date

Hi Experts,
I have created a generic datasource using Function Module RSAX_BIW_GET_DATA. I have copied this function module and created a my own Function Module. I want to load delta using this. But I don't know how to handle delta in the code.
my code is working for full load but not for delta. I have seen that in ROOSOURCE tabel the Delta field is showing the AIE instead of D and extraction method is showing as F2. I have searched a lot of forums and articles but didn't get how to handle this.
Please advice.

Hi Amit,
Go through the link as suggested by AKhan which lets you understand the concept of offsets and the last extraction status.
In case of Table or View based GDS, the system takes care of the deltas based on the selections you make in the "Generic Delta" screen whereas in case of FM based DS, it is your responsibility to handle this part. Within your code, capture if the load is a Delta load (I_UPDMODE = D). Since your delta is on Created Date, maintain a Z table with name of the DS as the Key and a field representing the current value of the Delta field(created date in this case). When you first load the delta, there will be no record for your DS in this table. Create an entry with the current day. Next time when you load a delta, take this value, compare it with sy-datum and get all the records falling within these days. This has to be done in the Select stmt. Once selection happens, replace the value in the Z table with sy-datum. This way you can simulate the delta. The Z table can be used for other FM based Datasources also as it has DS as the key.
It would be easy if the exact SAP table where RSA7 delta field status is stored is known. Otherwise, the above method can be used.
Revert for any further queries.

Delta in generic datasource

Hi all,
In case of standard datasource, the document posted in R/3 is written to BW delta queue. Generic datasources don't support delta update directly but support generic delta. Can you pleasce clarify what exactly happend in case of generic datasoure.
Thanks in advnce,
Zak.

based on timestamp or values of certain field generic datasource shall manage delta. Check this please - Generic Delta-
http://help.sap.com/saphelp_nw70/helpdata/en/37/4f3ca8b672a34082ab3085d3c22145/content.htm

Generic DataSource using FM - Delta doubt

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