ORACLE11g 重装系统后根据dbf恢复数据库教程

1.安装一个和原系统一致的oracle 环境，主要包括版本、数据名sid、实例名、路径和数据库编码一致

2.修改listener.ora的参数

<span style="color:#455353;">SID_LIST_LISTENER =  
  (SID_LIST =  
    (SID_DESC =  
      (SID_NAME = PLSExtProc)  
      (ORACLE_HOME = D:\oracle\product\10.1.0\db_1)  
      (PROGRAM = extproc)  
    )  
   </span><span style="color:#ff0000;"> (SID_DESC =  
      (GLOBAL_DBNAME = orcl) //如果已经有这个orcl了，这个文件就不用修改  
      (ORACLE_HOME = D:\oracle\product\10.1.0\db_1) //这里要根据你的实际路径来  
      (SID_NAME = orcl)  
    )</span><span style="color:#455353;">  
  )  
LISTENER =  
  (DESCRIPTION_LIST =  
    (DESCRIPTION =  
      (ADDRESS_LIST =  
        (ADDRESS = (PROTOCOL = TCP)(HOST = lypch )(PORT = 1521))  
      )  
      (ADDRESS_LIST =  
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))  
      )  
    )  
  )</span>  

3.修改tnsnames.ora的参数

AMMICLY =  
  (DESCRIPTION =  
    (ADDRESS = (PROTOCOL = TCP)(HOST = lypch )(PORT = 1521))  
    (CONNECT_DATA =  
      (SERVER = DEDICATED)  
      (SERVICE_NAME = orcl)  
      (UR=A) //参数允许只进行管理性的连接，数据库nomount,mount或者restricted时，动态监听显示状态为BLOCKED时，客户端配置UR=A进行连接。  
    )  
  )  
EXTPROC_CONNECTION_DATA =  
  (DESCRIPTION =  
    (ADDRESS_LIST =  
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))  
    )  
    (CONNECT_DATA =  
      (SID = PLSExtProc)  
      (PRESENTATION = RO)  
    )  
  ) 

4.SQL>shutdown immediate 停止服务，将新安装的oracle的dbf备份后删除，将原dbf拷贝到新安装的目录下F:\app\toshiba\oradata\orcl

5.原oracle库主目录下的FLASH_RECOVERY_AREA目录全部覆盖到新安装的oracle对应目录下

6. SQL>startup          再次启动服务