Store a File in BLOB field throught stored procedure - ORA-01460 error

The gool is to memorize files in database in BLOB fields . For that we use the folowing stored procedure and Delphi software (ODAC components)

CREATE OR REPLACE
PROCEDURE ADD_DOC (pID_DOC IN INTEGER, pDOC IN BLOB DEFAULT NULL)
IS
BEGIN
BEGIN
INSERT INTO TABLE_DOC ID_DOC, DOC) VALUES ( pID_DOC, pDOC );
EXCEPTION
when OTHERS then
raise_application_error(-20294, '{8}-Erreur lors de l''ajout d''une PJ de la documentation commerciale n° ['||pID_DOC||'] ' ||SQLERRM);
END;
END;

Begin
IF OpenDialog1.Execute = true
then
begin
OraStoredProc1.Params.Clear;
OraStoredProc1.StoredProcName := 'ADD_DOC';
OraStoredProc1.Params.CreateParam(ftInteger,'pID_DOC',ptinput);
OraStoredProc1.Params.CreateParam(ftBlob,'pDOC',ptinput);
OraStoredProc1.ParamByName('pID_DOC').AsInteger := pID_DOC;
OraStoredProc1.ParamByName('pDOC').LoadFromFile(OpenDialog1.FileName, ftBlob);
try
OraStoredProc1.ExecProc;
except
ON E : Exception do
ShowMessage(e.Message);
end;
end;

For files < 32k, no problem, for files > 32k the following message appear :

ORA-01460: unimplemented or unreasonable conversion requested

Thanks for any answer

Edited by: user8273449 on 4 déc. 2012 01:51