Database selection goes for a dump

Question

Hi,
I am using SELECT....ENDSELECT to fetch the data in Chunks. Whenever I get a chunk of data I am creating a separate task for that which calls RFC enabled Function Module.
In Simple words....
SELECT.....
  CALL FUNCTION <XYZ> STARTING NEW TASK STARTNAME.
ENDSELECT....
In the first iteration, I am selecting 1000 records and it is working fine, but when the program runs for the second iteration it is giving a dump DBIF_RSQL_INVALID_CURSOR.
What could be the problem? I searched SDN and found few answers like for the second time it will not give a dump. But, I have a vague idea here. Anybody please provide me with a solution.
Thanks,
Babu Kilari

Answer 1

Hi Babu,
When you mention Collective Run as the option under the RFC enabled FM, all the data is passed to the External Memory and when the collection is over, it will be imported to the database using the index.
For Ex:
TABLES indx.
DATA indx_tab TYPE TABLE OF indx.
DATA sflight_tab TYPE TABLE OF sflight.
SELECT * FROM sflight INTO TABLE sflight_tab.
EXPORT sflight_tab TO DATABASE indx(hk) ID 'FLIGHTS'
       USING indx_export.
indx-srtf2 = 0.
IMPORT sflight_tab FROM DATABASE indx(hk) ID 'FLIGHTS'
       USING indx_import.
FORM indx_export USING foo.
  APPEND indx TO indx_tab.
ENDFORM.
FORM indx_import USING foo.
  READ TABLE indx_tab INTO indx WITH KEY srtf2 = indx-srtf2.
  indx-srtf2 = indx-srtf2 + 1.
ENDFORM.
Your FM when you use with Coll.run option will run similar to this logic.
Regards,
-Syed.