Call RFC Function Module and return 1000 records at a time

I would like to call a Remote Enabled Function Module from a non SAP system.  This function module will select data from the database and return it to the calling program.
Suppose there are 100,000 records that need to be returned, but the calling module would like the data in chunks of 1000 records.  Therefore the calling program would call the FM 100 times. 
How do I code the function module to know on each subsequent call to grab the next chunk of 1000 records? 
Let me know if additional information is needed.
Thanks,
Aaron

Hello,
Here is how you can go for this issue:
1. Create one RFC function module with following parameter. These parameters are with respective of chunking logic.
     Import: Package Size
     Export: Total number of records
     Changing: chunk count
Implement following logic:
1. First of you need to know how many chunks you need to fetch for that get the count of total number of records. This is one  
    time activity so you better maintain one flag import parameter will be set to 'X' only first call.
2. Get the number of chunk using total number of records / chunk size for e.g. 1000 / 100 so chunk count = 10.
3. Define internal chunk counter in function module which will be used to locate the correct chunk depending on the chunk
    counter value sent from calling program.
4. Send first call with package size 100 and chunk count = 1, execute select statement and increment internal
    chunk count check if chunk count = internal chunk count in current case chunk count = 1 so exit select statement and return
    with first chunk.
5. Send second call with package size 100 and chunk count = 2. Execute select statement and check chunk count with internal
    chunk counter, in current case it will be 1 so skip that data and go for next chunk of 100 records increment internal chunk  
    counter. In this case it will match with external chunk count = 2. load output table with that data and return to calling program.
6. Repeat step 4 until you reach last chunk.
You need to use SELECT...ENDSELECT with PACKAGE SIZE addition so for every loop it will return number of records mentioned in package size.
Hope this helps.
Thanks,
Augustin.

Similar Messages

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    To search for a destination, press the Find button and specify your selection. You get a list of all entries matching your selection. Place the cursor on the one you want, and press F2 or simply double-click the destination. All information for the given entry appears.
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    On the destinations overview screen (transaction code SM59), the connection types and all existing destinations are displayed in a tree structure.
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    To create a new RFC destination, press the Create button. A new screen is displayed with empty fields for you to fill in.
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    On the destinations overview screen (transaction code SM59), the connection types and all existing destinations are displayed in a tree structure.
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    read the original message
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    Hi all
    com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed
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    LOCATION    CPIC (TCP/IP) on local host
    ERROR       hostname '<system.ab.ydydy.yyyd.com>' unknown
    TIME        Mon Jun 06 14:50:25 2005
    RELEASE     640
    COMPONENT   NI (network interface)
    VERSION     37
    RC          -2
    MODULE      ninti.c
    LINE        332
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    Hi
    This is my code....
    Created on Jun 2, 2005
    To change the template for this generated file go to
    Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
    package MyProject;
    @author pradeep
    To change the template for this generated type comment go to
    Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
    import com.sap.mw.jco.*;
    public class Bapi2 extends Object {
       JCO.Client mConnection;
       JCO.Repository mRepository;
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                   "<pradeep>", // userid
                   "*****", // password
                   "EN", // language
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    Connect_PM  GWHOST=<abc11.aa.abc23.company.com>, GWSERV=sapgw00, ASHOST=<abc11.aa.abc23.company.com>, SYSNR=00
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    ERROR       hostname '<abc11.aa.abc23.company.com>' unknown
    TIME        Mon Jun 06 17:15:12 2005
    RELEASE     640
    COMPONENT   NI (network interface)
    VERSION     37
    RC          -2
    MODULE      ninti.c
    LINE        332
    DETAIL      NiPGetHostByName2: hostname
                '<abc11.aa.abc23.company.com>' not
         at com.sap.mw.jco.rfc.MiddlewareRFC$Client.nativeConnect(Native Method)
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         at com.sap.mw.jco.JCO$Client.connect(JCO.java:2983)
         at MyProject.Bapi2.<init>(Bapi2.java:45)
         at MyProject.Bapi2.main(Bapi2.java:233)
    Thx
    PRadeep

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  • Error in RFC Function module

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