Parameter binding behavior was changed in Delphi 4. In Delphi 4 if you don't give a parameter a value it assumes that the value you wanted was NULL. This causes a problem for the REF Cursor type in Oracle because the server doesn't accept NULL as an input value for a REF Cursor type. The workaround for this issue is to set the value of the REF Cursor parameter to 0 (zero) at either design time or at runtime before the procedure is executed. This change in behavior will be accounted for in a later version of the BDE (> 5.0).

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