连接错误：Oracle.DataAccess.Client.OracleException ORA-12170
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2570912/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Connection Error:Oracle.DataAccess.Client.OracleException ORA-12170
提问by psyb0rg
This has taken many hours of mine. I have to get this .Net app to run on an XP system. Someone seems to have messed up some files so conn.Open() in the C# is causing this error:
这花了我很多小时。我必须让这个 .Net 应用程序在 XP 系统上运行。有人似乎弄乱了一些文件，所以 C# 中的 conn.Open() 导致了这个错误：
Connection Error:Oracle.DataAccess.Client.OracleException ORA-12170:
TNS:Connect timeout occurred at Oracle.DataAccess.Client.OracleException.HandleErrorHelper(Int32 errCode, OracleConnection
conn, IntPtr opsErrCtx, OpoSqlValCtx* pOpoSqlValCtx, Object src, String procedure) at
Oracle.DataAccess.Client.OracleException.HandleError(Int32 errCode, OracleConnection conn,
IntPtr opsErrCtx, Object src) at Oracle.DataAccess.Client.OracleConnection.Open() at
Service.connect(Int32 sql_choice, String databaseIdentifier, String authenticationKey) in
c:\Documents ....
This is my sqlnet.ora file:
这是我的 sqlnet.ora 文件：
# sqlnet.ora Network Configuration File: C:\oracle\product.2.0\db_1\network\admin\sqlnet.ora
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
SQLNET.INBOUND_CONNECT_TIMEOUT = 180
SQLNET.SEND_TIMEOUT = 180
SQLNET.RECV_TIMEOUT = 180
This is tnsnames.ora:
这是 tnsnames.ora：
# tnsnames.ora Network Configuration File: C:\oracle\product.2.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORACLE2 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dell )(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = oracle2)
)
)
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dell )(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
This is listener.ora:
这是listener.ora：
# listener.ora Network Configuration File: C:\oracle\product.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product.2.0\db_1)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dell )(PORT = 1521))
)
)
I've tried changing the host name to localhost, 127.0.0.1 but that doesn't work. Also,
我已经尝试将主机名更改为 localhost, 127.0.0.1 但这不起作用。还，
- I can execute queries from SQL Plus.
- There are NO firewalls on the system
- The .Net app and DB are on the same machine.
- 我可以从 SQL Plus 执行查询。
- 系统上没有防火墙
- .Net 应用程序和 DB 在同一台机器上。
回答by DCookie
A similar SO questionwas solved when it was determined that the database was installed on a Windows box using DHCP. As I said in that answer, the Microsoft Loopback Adapter needs to be installed if you use DHCP on a Windows box with Oracle.
一个类似的SO问题，当它被确定数据库安装在使用DHCP Windows中得到解决。正如我在那个答案中所说，如果您在带有 Oracle 的 Windows 机器上使用 DHCP，则需要安装 Microsoft Loopback Adapter。
