In onderstaande tekst help Microsoft u echt verder met uw probleem, vooral methode 2 is een echte aanrader!
Problem XL97
Data Not Returned from Query Using ORACLE Data Source
Method 2: Move Your Mouse Pointer
If you move your mouse pointer continuously while the data is being returned to Microsoft Excel, the query may not fail. Do not stop moving the mouse until all the data has been returned to Microsoft Excel.
NOTE: Depending on your query, it may take several minutes to return the results of your query to the worksheet.