MySql数据库忘记Root密码，如何修改

create or replace function fun_get_glide_num(p_table   varchar2,
p_website varchar2)
/**
*  p_table varchar2 表名
*  p_website varchar2 自定义开头字符
*/
return varchar2 as
v_seq       varchar2(50);
v_seq_value number;
v_sql       varchar2(200);
v_num       varchar2(20);
begin
v_seq := 'seq_' || p_table;
v_sql := 'select ' || v_seq || '.nextval from dual';
execute immediate v_sql
into v_seq_value;
select lpad(v_seq_value, 16, '0') into v_num from dual;
v_num := p_website || v_num;
return v_num;
end;

create or replace procedure pro_modify_seq_table(p_table_name varchar2,
key_id       varchar2) is
v_id  number;
v_max number;
v_seq number;
v_sql varchar2(1000);
/**
* p_table_name表的名称 >
*
*  key_id 表的主键ID名称
**/
begin
v_id  := 0;
v_max := 0;
v_seq := 0;
begin
v_sql := 'select max(' || key_id || ') from ' || p_table_name;
execute immediate v_sql
into v_id;
v_max := to_number(substr(v_id, -5, 5));
loop
v_sql := 'select seq_' || p_table_name || '.nextval from dual';
execute immediate v_sql
into v_seq;
exit when v_seq > v_max or v_seq = v_max;
end loop;
end;
end;

create or replace function FUN_MD5(input_string VARCHAR2)  return varchar2 IS
raw_input     RAW(128) := UTL_RAW.CAST_TO_RAW(input_string);
decrypted_raw RAW(2048);
--MD5加密
error_in_input_buffer_length EXCEPTION;
BEGIN
sys.dbms_obfuscation_toolkit.MD5(input    =>    raw_input,
checksum => decrypted_raw);
return lower(rawtohex(decrypted_raw));
END;