SQL & PL/SQL

I'm a developer who is new to Oracle. I have a SQL statement that looks like this (adjusted slightly to make it more generic):

DELETE FROM Super
WHERE SuperImpID IN (
SELECT s.SuperImpID FROM Import i, Super s
WHERE s.SuperImpID = i.RecordID
AND s.Code = '10'
AND i.MesgTxt = 'ABCD'
AND s.UserField = 'EFGH')

This SQL statement executes fine and deletes the desired record when run from SQL Plus Worksheet. However, when I run it through an ODBC or BDE driver I get a message saying "Error creating cursor handle".

Can anyone suggest a solution?

Thanks, Dave