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拥有归档日志 如何恢复一个丢失的数据文件

2017-02-28 00:00 726 查看
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 javis]$ 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/javis/javis02.dbf'

SQL> alter database create datafile 3 as '/opt/oracle/oradata/javis/javis02.dbf';

Database altered.

SQL> select name from v$datafile;

NAME
-------------------------------------------------------
/opt/oracle/oradata/javis/system01.dbf
/opt/oracle/oradata/javis/undotbs01.dbf
/opt/oracle/oradata/javis/javis02.dbf
/opt/oracle/oradata/javis/javis01.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/javis/javis02.dbf'

SQL> recover datafile 3;
Media recovery complete.
SQL> alter database open;

Database altered.

SQL>

-END-
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