重做日志文件出错，如何打开数据库？

ALLSTARS_ORACLE

重做日志文件出错，
数据库打不开，
该如何做呢？
没有备份

SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-00314: log 1 of thread 1, expected sequence#  doesn't match
ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/orcl/redo01.log'


方法 我试过了，
依然不行，
请 高手 帮帮忙呀


[oracle@credit240 ~]$ sqlplus sys/123456 as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Wed May 9 15:06:24 2007

Copyright (c) 1982, 2005, Oracle.  All rights reserved.


Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

SQL> shutdown;
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.
SQL>
SQL>
SQL> startup mount;
ORACLE instance started.

Total System Global Area  167772160 bytes
Fixed Size                  1218316 bytes
Variable Size              62916852 bytes
Database Buffers          100663296 bytes
Redo Buffers                2973696 bytes
Database mounted.
SQL>
SQL>
SQL> alter database open resetlogs;
alter database open resetlogs
*
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery


SQL>
SQL>
SQL> alter database clear logfile group 1;

Database altered.

SQL>
SQL>
SQL> alter database open resetlogs;
alter database open resetlogs
*
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery


SQL>



谢谢～！
使用如下就好用了：
alter database clear logfile group 1;
alter database open ;
shutdown;
startup;