擁有歸檔日志 如何恢復一個丟失的數據文件
2024-07-21 02:33:02
供稿：網友
昨天Kamus問到一個問題，假如擁有一個冷備份，但是缺失了其中的一個數據文件，但是存在所有的歸檔，應該如何恢復數據文件。 動手試一下，大概就是如下步驟:
[Oracle@jumper eygle]$ sqlplus "/ as sysdba"SQL*Plus: Release 9.2.0.4.0 - PRodUCtion on Sun Aug 20 01:22:50 2006Copyright (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.dbfSQL> 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-
