oracle数据库所在的机器更改IP地址后，发现无法连接，
解决这个问题，需要修改一下对应的文件：
F:appzhaoheproduct11.2.0dbhome_1NETWORKADMINlistener.ora
F:appzhaoheproduct11.2.0dbhome_1NETWORKADMIN nsnames.ora
把其中对应的IP地址进行修改后再重新启动oracle就可以解决问题了；
注：重启实例服务、OracleOraDb11g_home1TNSListener后，稍等1分钟后即可。

listener.ora

# listener.ora Network Configuration File: F:appzhaoheproduct11.2.0dbhome_1
etworkadminlistener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = F:appzhaoheproduct11.2.0dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:F:appzhaoheproduct11.2.0dbhome_1inoraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.5)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = F:appzhaohe

tnsnames.ora

# tnsnames.ora Network Configuration File: F:appzhaoheproduct11.2.0dbhome_1NETWORKADMIN	nsnames.ora
# Generated by Oracle configuration tools.

ORACLR_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (CONNECT_DATA =
      (SID = CLRExtProc)
      (PRESENTATION = RO)
    )
  )

LISTENER_ORCL =
  (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.5)(PORT = 1521))


ORCL =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.5)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

注意：HOST位置要用机器名或机器的网络IP（如192.168.1.5）