拥有归档日志 如何恢复一个丢失的数据文件

如果拥有一个冷备份，但是缺失了其中的一个数据文件，但是存在所有的归档，应该如何恢复数据文件。

动手试一下，大概就是如下步骤:

[oracle@jumper eygle]$ sqlplus "/ as sysdba"

SQL*Plus: Release 9.2.0.4.0 - Production on Sun Aug 20
01:22:50 2006

Copyright (c) 1982, 2002, Oracle Corporation. All rights
reserved.

Connected to an idle instance.

SQL> startup mount

ORACLE instance started.

Total System Global Area 252777592 bytes

Fixed
Size 451704 bytes

Variable Size
134217728 bytes

Database Buffers 117440512 bytes

Redo
Buffers 667648 bytes

Database mounted.

SQL> alter database open;

alter database open

*

ERROR
at line 1:

ORA-01157: cannot identify/lock data file 3 - see DBWR
trace file

ORA-01110: data file 3:
'/opt/oracle/oradata/eygle/eygle02.dbf'

SQL>
alter database create
datafile 3 as '/opt/oracle/oradata/eygle/eygle02.dbf';

Database altered.

SQL> select name from v$datafile;

NAME

-------------------------------------------------------

/opt/oracle/oradata/eygle/system01.dbf

/opt/oracle/oradata/eygle/undotbs01.dbf

/opt/oracle/oradata/eygle/eygle02.dbf

/opt/oracle/oradata/eygle/eygle01.dbf

SQL> alter database open;

alter database open

*

ERROR
at line 1:

ORA-01113: file 3 needs media recovery

ORA-01110: data
file 3: '/opt/oracle/oradata/eygle/eygle02.dbf'

SQL> recover datafile 3;

Media recovery
complete.

SQL> alter database open;

Database altered.

SQL>