Oracle.ManagedDataAccess:TNS:无法解析指定的连接标识符

Question

尝试从新的ASP.NET MVC 4应用程序连接到Oracle数据库时出现以下错误:"ORA-12154:TNS:无法解析指定的连接标识符".我正在使用Oracle.ManagedDataAccess DLL(版本4.121.1.0)尝试连接到Oracle 10g数据库.这是事情 - 我有一个集成测试程序集,使用这个最小的App.config成功连接到数据库:

  <connectionStrings>
    <add name="OracleConnection" connectionString="DATA SOURCE=TNS_NAME;PASSWORD=xxx;PERSIST SECURITY INFO=True;USER ID=xxx" providerName="Oracle.ManagedDataAccess.Client" />
  </connectionStrings>

但是,如果我尝试使用所有疯狂的Web.config设置运行我的Web应用程序,我收到错误"ORA-12154:TNS:无法解析指定的连接标识符".我究竟做错了什么？为什么我的集成测试程序集的配置如此简单,Web.config如此复杂？以下是我的Web.config的相关部分(取自部署和配置ODP.NET,无需与Entity Framework一起安装):

自定义configSection:

<configSections>
    <section name="oracle.manageddataaccess.client"
        type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
  </configSections>

相应的配置部分:

  <oracle.manageddataaccess.client>
    <version number="*">
      <edmMappings>
        <edmMapping dataType="number">
          <add name="bool" precision="1"/>
          <add name="byte" precision="2" />
          <add name="int16" precision="5" />
        </edmMapping>
      </edmMappings>
    </version>
  </oracle.manageddataaccess.client>

自定义system.data节点:

  <system.data>
    <DbProviderFactories>
       Remove in case this is already defined in machine.config 
      <remove invariant="Oracle.DataAccess.Client" />
      <remove invariant="Oracle.ManagedDataAccess.Client" />
      <add name="ODP.NET, Managed Driver" invariant="Oracle.ManagedDataAccess.Client"
             description="Oracle Data Provider for .NET, Managed Driver"
             type="Oracle.ManagedDataAccess.Client.OracleClientFactory, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
    </DbProviderFactories>
  </system.data>

EntityFramework节点:

  <entityFramework>
    <defaultConnectionFactory type="Victoria.Data.OracleConnectionFactory, EntityFramework" />
  </entityFramework>

更新1:阅读http://docs.oracle.com/cd/E16655_01/win.121/e17732/featConfig.htm#ODPNT8161之后,我尝试将我的Web.config oracle.manageddataaccess.client修改为以下内容并且它可以正常工作.但是,让connectionString节点引用TNS名称和对同一TNS名称文件的此额外引用似乎不正确.

  <oracle.manageddataaccess.client>
    <version number="*">
      <dataSources>
        <dataSource alias="SIEBMATS" descriptor="(DESCRIPTION=(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = xxx.yyy.zzz)(PORT = 1521)))(CONNECT_DATA =(SERVICE_NAME = siebmats)))" />
      </dataSources>
      <edmMappings>
        <edmMapping dataType="number">
          <add name="bool" precision="1"/>
          <add name="byte" precision="2" />
          <add name="int16" precision="5" />
        </edmMapping>
      </edmMappings>
    </version>
  </oracle.manageddataaccess.client>

Answer 1

您可以尝试的一件事是连接字符串如下:connectionString ="Data Source = // SERVER:PORT/INSTANCE_NAME; USER = XXX; PASSWORD = XXX".

这里有用的参考资料:http : //www.connectionstrings.com/oracle/ http://docs.oracle.com/cd/E51173_01/win.122/e17732/featConnecting.htm#ODPNT169

这也有助于我解决EF问题: 部署和配置ODP.NET无需安装Entity Framework即可工作

希望有所帮助.