ORACLE11g 重装系统后根据dbf恢复数据库

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

1. SID_LIST_LISTENER =
2. (SID_LIST =
3. (SID_DESC =
4. (SID_NAME = PLSExtProc)
5. (ORACLE_HOME = D:oracleproduct10.1.0db_1)
6. (PROGRAM = extproc)
7. )
8. (SID_DESC =
9. (GLOBAL_DBNAME = orcl) //如果已经有这个orcl了，这个文件就不用修改
10. (ORACLE_HOME = D:oracleproduct10.1.0db_1) //这里要根据你的实际路径来
11. (SID_NAME = orcl)
12. )
13. )
14. LISTENER =
15. (DESCRIPTION_LIST =
16. (DESCRIPTION =
17. (ADDRESS_LIST =
18. (ADDRESS = (PROTOCOL = TCP)(HOST = lypch )(PORT = 1521))
19. )
20. (ADDRESS_LIST =
21. (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
22. )
23. )
24. )

3.修改tnsnames.ora的参数

1. AMMICLY =
2. (DESCRIPTION =
3. (ADDRESS = (PROTOCOL = TCP)(HOST = lypch )(PORT = 1521))
4. (CONNECT_DATA =
5. (SERVER = DEDICATED)
6. (SERVICE_NAME = orcl)
7. (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。
8. )
9. )
10. EXTPROC_CONNECTION_DATA =
11. (DESCRIPTION =
12. (ADDRESS_LIST =
13. (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
14. )
15. (CONNECT_DATA =
16. (SID = PLSExtProc)
17. (PRESENTATION = RO)
18. )
19. )

3.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 oshibaoradataorcl

4.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

5. SQL>startup                          再次启动服务

根据看过博客操作的朋友反馈，多实例时有疑问，按照如下地址操作解决了问题

http://blog.sina.com.cn/s/blog_a59b6d310102vat0.html