想在oracle中通过程序插入时间戳

I have this procedure

我有这个程序

PROCEDURE insertSample
  (
    return_code_out OUT VARCHAR2,
    return_msg_out OUT VARCHAR2,
    sample_id_in IN table1.sample_id%TYPE,
    name_in IN table1.name%TYPE,
    address_in IN table1.address%TYPE
  )
  IS

  BEGIN
    return_code_out := '0000';
    return_msg_out := 'OK';

    INSERT INTO table1
    sample_id, name, address)
    VALUES
    (sample_id_in, name_in, address_in);


  EXCEPTION
    WHEN OTHERS
    THEN
      return_code_out := SQLCODE;
      return_msg_out := SQLERRM;


  END insertSample;
PROCEDURE inse