拥有归档日志 如何恢复一个丢失的数据文件

2/9/2008来源:Oracle教程人气:5846

    昨天Kamus问到一个问题,假如拥有一个冷备份,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> -The End-