text: -- @testpoint: 插入超出范围值，字节长度设定为8000，合理报错
  
  DECLARE
    V_C nchar(8001);
  BEGIN
    DROP TABLE IF EXISTS test_nchar_06;
    CREATE TABLE test_nchar_06 (stringv nchar(8000));
    FOR I IN 1 .. 8001 LOOP
      V_C := V_C || 'x';
    END LOOP;
    insert into test_nchar_06 values (V_C);
  END;
  /
  
  