ORA-01157问题解决

　　 ORA-01157问题怎么解决？

环境：redhat 9 + Oracle 817
问题：昨天忽然掉电之后数据库启动之后就提示这个错误。数据是非归档模式，而且这个数据文件还有用。怎么恢复。

[oracle@ccdevsvr root]$ svrmgrl

Oracle Server Manager Release 3.1.7.0.0 - ProdUCtion

Copyright (c) 1997, 1999, Oracle Corporation.  All Rights Reserved.

Oracle8i Enterprise Edition Release 8.1.7.4.0 - Production
With the Partitioning option
JServer Release 8.1.7.4.0 - Production

SVRMGR> connect system/manager as sysdba
Connected.
SVRMGR> show
Instance                      local
Spool                         OFF
Timing                         OFF
Termout                      ON
Echo                         OFF
Stoponerror                   OFF
Autorecovery                   OFF
Logsource                      <default>
Maxdata                      20480
Numwidth                      10
Charwidth                      80
Longwidth                      80
Datewidth                      9
Labwidth                      32
Compatibility                NATIVE
Retries                      infinite
Server Output                OFF
Autoprint                      OFF
Fetchrows                      infinite
Appinfo                      OFF (USERTEXT : Oracle Server Manager)

SVRMGR> startup
ORA-01081: cannot start already-running ORACLE - shut it down first
SVRMGR> shutdown immediate
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SVRMGR> startup
ORACLE instance started.
Total System Global Area                      73109664 bytes
Fixed Size                                        73888 bytes
Variable Size                                  56086528 bytes
Database Buffers                               16777216 bytes
Redo Buffers                                     172032 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 10 - see DBWR trace file
ORA-01110: data file 10: '/home/oracle/dwbx_wmstat.dbf'
SVRMGR>

[oracle@ccdevsvr oracle]$ pwd
/home/oracle
[oracle@ccdevsvr oracle]$ ll *.dbf
-rwxrwxrwx 1 oracle dba    209723392 Nov 29 11:47 iwbx_wmindx.dbf
-rwxrwxrwx 1 oracle dba    104865792 Dec  1 09:35 test.dbf
[oracle@ccdevsvr oracle]$
数据库是否归档模式？
在mount状态：

归档的话：
SQL>alter database datafile 'I:\ORADATA\EXAMORA\TEST01.DBF' offline;
非归档的话：
SQL>alter database datafile 'I:\ORADATA\EXAMORA\TEST01.DBF' offline drop;

然后在
SQL>alter database open;

[oracle@ccdevsvr root]$ cd /home/oracle
[oracle@ccdevsvr oracle]$ ll *.dbf
-rwxrwxrwx    1 oracle   dba      209723392 Nov 29 11:47 iwbx_wmindx.dbf
-rwxrwxrwx    1 oracle   dba      104865792 Dec 1 09:35 test.dbf
[oracle@ccdevsvr oracle]$ exit
exit
SVRMGR> select sysdate from dual;
SYSDATE
---------
01-DEC-04
1 row selected.

SVRMGR> alter database open
     2> ;
alter database open
*
ORA-01157: cannot identify/lock data file 10 - see DBWR trace file
ORA-01110: data file 10: '/home/oracle/dwbx_wmstat.dbf'
SVRMGR> alter database datafile '/home/oracle/dwbx_wmstat.dbf' offline drop;
Statement processed.
SVRMGR> alter database open;
Statement processed.
SVRMGR>