尝试使用ODP .NET连接时出现ORA-12154错误

Question

尝试使用ODP .NET连接时出现ORA-12154错误

更新:Wernfried的回答为我解决了.

创建一个环境变量TNS_ADMIN = D:\ oracle\product\12.1.0\dbhome_1 \network\admin

Sqlplus从Registry读取TNS_ADMIN但ODP.NET托管驱动程序不读取注册表.另请参阅: OdbcConnection将中文字符返回为"？"

您可以通过以下方式检查环境变量:

string tns_admin = Environment.GetEnvironmentVariable("TNS_ADMIN")

我并没有完全理解他建议的链接是如何相关的.

原始问题:

尝试使用ODP .NET连接时出现ORA-12154错误

代码:

  OracleConnection oracleConnection = new OracleConnection();
  string connectionString = "User Id=redacted;Password=redacted;Data Source=db6";
  oracleConnection.ConnectionString = connectionString;
  oracleConnection.Open();

错误:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Oracle.ManagedDataAccess.Client.OracleException: ORA-12154: TNS:could not resolve the connect identifier specified ---> OracleInternal.Network.NetworkException: ORA-12154: TNS:could not resolve the connect identifier specified
   at OracleInternal.Network.AddressResolution..ctor(String TNSAlias, String instanceName)
   at OracleInternal.Network.OracleCommunication.DoConnect(String tnsDescriptor)
   at OracleInternal.Network.OracleCommunication.Connect(String 

我的tnsnames.ora:

# tnsnames.ora Network Configuration File: D:\oracle\product\12.1.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

DB6 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = redacted.redacted.com)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = db6)
    )
  )

LISTENER_DB6 =
  (ADDRESS = (PROTOCOL = TCP)(HOST = redacted.redacted.com)(PORT = 1521))


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

用sql-plus连接:

C:\Users\Derek.Morin\Documents\Visual Studio 2010\Projects\ScriptCode\Oracle>sqlplus redacted/redacted@localhost/db6

SQL*Plus: Release 12.1.0.1.0 Production on Thu Dec 10 09:10:14 2015

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Last Successful login time: Tue Sep 22 2015 09:41:19 -05:00

Connected to:
Oracle Database 12c Release 12.1.0.1.0 - 64bit Production

Answer 1

韦恩弗里德的评论为我解决了这个问题.由于他没有回来发布它作为答案 - 我将以他的评论结束这一点.

创建一个环境变量

TNS_ADMIN=D:\oracle\product\12.1.0\dbhome_1\network\admin

sqlplus从Registry读取TNS_ADMIN但ODP.NET托管驱动程序不读取注册表.另见stackoverflow.com/questions/28280883/... - Wernfried Domscheit 2015年12月10日16:24