Oracle datalinks to update a MS SQL table

Question

I am accessing a MS SQL table thru an Oracle procedure. Reads with no problems. When I try and update a column (2 columns affected one is a int and the other is datetime) receive the following error:
ORA-02070: database IWSCIV does not support || in this context
Sql Statements tried are
UPDATE iwPhotoProcessed@IWSCIV
SET "Status" = 1
where "BKno" = '1' || v_app_id;
UPDATE iwPhotoProcessed@IWSCIV
SET "Status" = 1, CompletedDate='04/05/2008 09:14:15 AM'
where "BKno" = '1' || v_app_id;
The above command (minus the @IWSCIV) works fine in MS SQL and updates rows.

Answer 1

1) I would generally suggest avoiding string literals when doing UPDATE statements in general, but particularly in the case of updates across Heterogeneous Connectivity database links.
2) I would generally write something like this (assuming "BKno" is declared as a string)
DECLARE
  l_new_status NUMBER := 1;
  l_app_id VARCHAR2(10) := '1' || v_app_id;
BEGIN
  UPDATE iwPhototProcessed@IWSCIV
     SET "Status" = l_new_status
   WHERE "Bkno" = l_app_id;
END;Justin