通常按网上各贴所言，配置对listener.ora和tnsnames.ora即可。然而我耐心的比较了几个小时- -，也没发现有什么不对的地方。

重点是这里

注意到了吗。监听的名字不知道什么时候变成了ORACLEOraDb11g_home1TNSListenerLISTENER1！（可能是使用oracle自带工具重新配置监听导致的）这意味着，此时listener.ora的配置需要相应调整如下：

# listener.ora Network Configuration File: D:\ORACLE\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

LISTENER1 =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = che-PC)(PORT = 1521))
    )
  )

SID_LIST_LISTENER1 =
  (SID_LIST =
     (SID_DESC =
      (GLOBAL_DBNAME = ORCL)
      (ORACLE_HOME =D:\Oracle\product\11.2.0\dbhome_1)
      (SID_NAME = ORCL)
    )

    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = D:\ORACLE\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\ORACLE\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER1和SID_LIST_LISTENER1都应该与服务名对应。