If the table itself is only supposed to have one row, then add a numeric Primary key that gets set to one during the INSERT. You might also have an update trigger that makes sure that it is always set to 1.

Code:
CREATE OR REPLACE TRIGGER test 
BEFORE INSERT ON offcparm
   FOR EACH ROW
DECLARE
   :NEW.new_pkey := 1;
EXCEPTION
   WHEN DUP_VAL_ON_INDEX
      mylog('row already exists...BLAH...BLAH...BLAH...');
      RAISE;
   WHEN OTHERS THEN RAISE;
END;
/