For connecting SAP BODS with ECC system, we need to create a SAP Applications datastore in Data Services. For this we need to specify the data transfer method. This method defines how data that is extracted by the ABAP running on the SAP application server becomes available to the Data Services server.

The options are:

o    RFC: Use to stream data from the source SAP system directly to the Data Services data flow process using RFC.

o    Direct download: The SAP server transfers the data directly to the Local directory using the SAP-provided function GUI_DOWNLOAD or WS_DOWNLOAD.

o    Shared directory: Default method. The SAP server loads the transport file into the Working directory on SAP server. The file is read using the Application path to the shared directory from the Job Server computer.

o    FTP: The SAP server loads the Working directory on SAP server with the transport file. Then the Job Server calls an FTP program and connects to the SAP server to download the file to the Local directory.

o    Custom Transfer: SAP server loads the Working directory on SAP server with the transport file. The file is read by a third-party file transfer (custom transfer) program and loaded to the Custom transfer local directory.

Prerequisites:

1.     Need to define a SAP Applications datastores which includes the following information

o    Connection information including the application server name, the language used by the SAP client application, the client and system numbers

o    Data transfer method used to exchange information between Data Services and the SAP application.

o    Security information, specifically the SAP security profile to be used by all connections instigated from this datastore between Data Services and the SAP application.

2.     In case the Data Transfer Method is Direct Download the following checks should be ensured

o    Check whether direct download is the right method for us as it is actually calling the gui_download ABAP function call which is very unreliable with bigger amounts of data.

o    Transport of data takes about 40 times longer than with the other protocols.

o    We cannot use ‘execute in background’ with this option

o    Configuring it is simple; we just specify a directory on the jobserver in the field Client Download Directory.

o    But we need to ensure whether this directory actually exists

3.     In case the Data Transfer Method is Shared Directory the following checks should be ensured

o    While the ‘working directory on SAP server’ is the point where the ABAP will write the file to, the ‘Application path to the shared directory’ is the path to access this same directory from the jobserver.

o    Whatever we specify as working directory, SAP should have the write access to that.

o    The files generated by the SAP account, the BODS user has to have read permissions for. Typically, this is done by placing the BODS user into the same group as SAP is.

4.     In case the Data Transfer Method is FTP  the following checks should be ensured

o    Ensure that through the command prompt we are able to login by using the hostname the ftp server is running on, the username to login to ftp , and the password (In the command prompt, call ftp ‘hostname’ and type username password)

o    Next check what ‘cd’ (change directory) command we have to do in order to get to the working directory on SAP server? Copy this path as the ‘ftp relative path’ in the datastore properties.

o    Next step would be to check permissions on the files. In general, SAP should create the files with read permission on its main group; the ftp user should be part of that SAP group so it can read the files.

o    Ensure that the directory the file should be downloaded will be a directory on the jobserver computer.

5.     In case the Data Transfer Method is Custom Transfer  we need to ensure

o    A batch file needs to be specified that does all the download.

6.     The execution mode should be generate_and_execute

To define SAP Application Datastore:

a)     In the Datastore tab of the object library, right-click and select New.

b)     Enter a unique name for the datastore in the Datastore name box.

c)     The name can contain alphanumeric characters and underscores. It cannot contain spaces.

d)     For Datastore type, select SAP Applications.

e)     Enter the Application server name.

f)      Enter the User name and Password information.

g)     To add more parameters, click Advanced, enter the information as below and click OK to successfully create a SAP Application Datastore.

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Here the Working directory on SAP server is the point where the ABAP will write the file to and the Generated ABAP directory is the path to access this same directory from the jobserver.

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2 Comments

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  1. Magesh Subramanian

    Good article for a newbie to refer.SAP provides couple of function modules to install on the SAP application server and these function supports operations like “dynamically loading and executing ABAP programs from Data Services, efficiently running preloaded ABAP programs, allowing for seamless metadata browsing and importing from SAP servers, and reporting the status of running jobs”.

    You many need these function to make your connection work properly.Refer the Data Services technical manual for more information.

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