本人的問題已解決，先在安裝oracle的服務器上黑窗口輸入tnsping，提示說no listener，這是監聽服務沒有打開。 打開服務后還是不行，最后原因是服務器的網絡有防火墻的問題，關掉防火墻連接成功

第一反應是監聽沒開：

測試了一下， 連接超時沒用ping 通

C:\Users\Administrator>tnsping brorcl

TNS Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on 15-6月 -2015 09:45:43

Copyright (c) 1997, 2010, Oracle.? All rights reserved.

已使用的參數文件: D:\oracle\product\11.2.0\dbhome_1\network\admin\sqlnet.ora

已使用 TNSNAMES 適配器來解析別名 嘗試連接 (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.14.147.112)(PORT = 42525)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = brorcl))) TNS-12535: TNS: 操作超時

我登陸到遠程服務器上，查看了一下監聽的狀態

C:\Documents and Settings\Administrator>lsnrctl status

LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 15-6月 -2015 09:52:54

Copyright (c) 1991, 2010, Oracle.? All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521))) STATUS of the LISTENER

Alias???????????????????? LISTENER Version?????????????????? TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Production Start Date??????????????? 15-6月 -2015 09:36:02 Uptime??????????????????? 0 days 0 hr. 16 min. 55 sec Trace Level?????????????? off Security????????????????? ON: Local OS Authentication SNMP????????????????????? OFF Listener Parameter File?? F:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora Listener Log File???????? F:\app\Administrator\product\11.2.0\dbhome_1\network\log\listener.log Listening Endpoints Summary... ? (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\.\pipe\EXTPROC1521ipc))) ? (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=x3650m3)(PORT=47512))) ? (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=47512))) Services Summary... Service "BANKASSIST" has 1 instance(s). ? Instance "brorcl", status READY, has 1 handler(s) for this service... Service "CLRExtProc" has 1 instance(s). ? Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service... Service "brorcl" has 2 instance(s). ? Instance "brorcl", status UNKNOWN, has 1 handler(s) for this service... ? Instance "brorcl", status READY, has 1 handler(s) for this service... Service "brorclXDB" has 1 instance(s). ? Instance "brorcl", status READY, has 1 handler(s) for this service... The command completed successfully

看到監聽也正常，本地連接進去也很正常。

我想了一下本地能訪問遠程連接不上是不是防火墻問題，于是我關閉了windows防火墻，果然在遠程tnsping 能ping通了；

結果：應該是防火墻有改動了，最后把 服務器防火墻的 ip和端口添加為例外，應用恢復正常了。

總結： 一般遇到tns 的問題通常都是監聽或者是網絡問題 ? ? ? ? ? 1. 查看監聽是否正常 ? ? ? ? ? 2. 查看 ip 或端口有沒有改動 ? ? ? ? ? 3. 查看防火墻

總結

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