SQL ORA-02315扩展ORDImage

Question

我尝试使用扩展Oracle的ORDImage类型创建新类型。但是我不能使用新类型。

  

ORA-02315错误的构造数

我该怎么办？我应该为新类型添加新的构造函数吗？怎么样？

CREATE TYPE ORDSYS.ORDtest AUTHID CURRENT_USER UNDER ORDSYS.ORDImage ( deneme NUMBER );

CREATE TABLE image_test (id number, image ORDSYS.ORDtest);

CREATE OR REPLACE PROCEDURE load_test(in_id INTEGER,
                                       in_dir VARCHAR2,
                                       in_fname VARCHAR2)
    AS
      obj ORDSYS.ORDTEST;
      ctx RAW(64) := NULL;
    BEGIN
      INSERT INTO image_test VALUES
          (in_id, ORDSYS.ORDtest('FILE', in_dir, in_fname))
          RETURNING image INTO obj;
      obj.import(ctx);
      UPDATE image_test SET image = obj WHERE id = in_id;
      COMMIT;
    END;
    / 
LINE/COL ERROR
-------- -----------------------------------------------------------------
8/4  PL/SQL: SQL Statement ignored
9/16 PL/SQL: ORA-02315: incorrect number of arguments for default
     constructor