2

这花了我好几个小时。我必须让这个 .Net 应用程序在 XP 系统上运行。似乎有人弄乱了一些文件，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 ....

这是我的 sqlnet.ora 文件：

# sqlnet.ora Network Configuration File: C:\oracle\product\10.2.0\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

这是 tnsnames.ora：

# tnsnames.ora Network Configuration File: C:\oracle\product\10.2.0\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)
    )
  )

这是 listener.ora：

# listener.ora Network Configuration File: C:\oracle\product\10.2.0\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\10.2.0\db_1)
      (PROGRAM = extproc)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = dell  )(PORT = 1521))
    )
  )

我尝试将主机名更改为 localhost, 127.0.0.1 但这不起作用。还，

  • 我可以从 SQL Plus 执行查询。
  • 系统上没有防火墙
  • .Net 应用程序和数据库位于同一台机器上。
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1 回答 1

0

当确定数据库使用 DHCP 安装在 Windows 机器上时，类似的 SO 问题得到了解决。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。

于 2010-04-03T13:39:30.823 回答