急急急oracle插入大量数据报错

Question

declare
v_i number(20):=1;
v_shu varchar2(50):='bia';
begin
   loop
     v_shu:=v_shu||v_i;
      dbms_output.put_line('c1的长度：' || length(v_shu));
     insert into shuju values(v_i,
     v_shu,
     '2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','2008-8-8','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss','ssssssss');
     exit when v_i=1000000;
     v_i:=v_i+1;
   end loop;
end;
 
ORA-06502: PL/SQL: 数字或值错误 :  字符串缓冲区太小
ORA-06512: 在 line 7