Oracle数据库REAN恢复之数据文件的恢复是本文我们主要要介绍的内容,我们知道,除了system表空间的数据文件(mount)之外,其它数据文
Oracle数据库REAN恢复之数据文件的恢复是本文我们主要要介绍的内容,我们知道,除了system表空间的数据文件(mount)之外,其它数据文件可以在open(mount也可以)状态下恢复.open状态下恢复数据文件可以减少数据库停用的时间,所以应该在open状态下恢复这些数据文件.
示例一:数据文件被误删除
数据库关闭状态下删除非系统表空间数据文件.
启动数据库到mount状态.
脱机丢失的数据文件,alter database datafile n offline.
打开数据库,alter database open.
转储数据文件,restore datafile n.
使用recover datafile n 应用归档日志.
联机数据文件,alter database datafile n online.
--数据库关闭状态下删除非系统表空间数据文件.
[oracle@localhost ~]$ rm $ORACLE_BASE/product/10.2.0/oradatabak/example01.dbf;
SQL> select file#,error from v$recover_file;
FILE# ERROR
---------- -----------------------------------------------------------------
5 FILE NOT FOUND
SQL> select file#,name from v$datafile where file#=5;
FILE# NAME
---------- --------------------------------------------------------------------------------

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