执行与Oracle的连接时,"安全程序包中没有可用的凭据"

Question

在上次Windows更新后,执行与Oracle数据库连接的测试因AuthenticationException而失败.消息和堆栈跟踪如下所示:

    <ErrorInfo>
          <Message>Test method threw exception: 
System.Data.Entity.Core.EntityException: The underlying provider failed on Open. ---&gt; Oracle.ManagedDataAccess.Client.OracleException: Oracle Communication: Failed to connect to server or failed to parse connect string ---&gt; OracleInternal.Network.NetworkException: Oracle Communication: Failed to connect to server or failed to parse connect string ---&gt; System.Security.Authentication.AuthenticationException: A call to SSPI failed, see inner exception. ---&gt; System.ComponentModel.Win32Exception: No credentials are available in the security package</Message>
          <StackTrace> 
 --- End of inner exception stack trace ---
    at System.Net.Security.NegoState.StartSendAuthResetSignal(LazyAsyncResult lazyResult, Byte[] message, Exception exception)
   at System.Net.Security.NegoState.StartSendBlob(Byte[] message, LazyAsyncResult lazyResult)
   at System.Net.Security.NegoState.CheckCompletionBeforeNextSend(Byte[] message, LazyAsyncResult lazyResult)
   at System.Net.Security.NegoState.ProcessReceivedBlob(Byte[] message, LazyAsyncResult lazyResult)
   at System.Net.Security.NegoState.StartReceiveBlob(LazyAsyncResult lazyResult)
   at System.Net.Security.NegoState.CheckCompletionBeforeNextReceive(LazyAsyncResult lazyResult)
   at System.Net.Security.NegoState.StartSendBlob(Byte[] message, LazyAsyncResult lazyResult)
   at System.Net.Security.NegoState.ProcessAuthentication(LazyAsyncResult lazyResult)
   at System.Net.Security.NegotiateStream.AuthenticateAsClient(NetworkCredential credential, ChannelBinding binding, String targetName, ProtectionLevel requiredProtectionLevel, TokenImpersonationLevel allowedImpersonationLevel)
   at System.Net.Security.NegotiateStream.AuthenticateAsClient(NetworkCredential credential, String targetName, ProtectionLevel requiredProtectionLevel, TokenImpersonationLevel allowedImpersonationLevel)
   at OracleInternal.Network.Ano.StartNegotiation()
   at OracleInternal.Network.OracleCommunication.SendConnectPacketAndProcessResponse(AddressResolution addrRes)
   at OracleInternal.Network.OracleCommunication.ConnectViaCO(ConnectionOption connOption, AddressResolution addrRes)
   at OracleInternal.Network.OracleCommunication.DoConnect(String tnsDescriptor)
 --- End of inner exception stack trace ---
    at OracleInternal.Network.OracleCommunication.DoConnect(String tnsDescriptor)
   at OracleInternal.Network.OracleCommunication.Connect(String tnsDescriptor, Boolean doNAHandshake, String IName)
   at OracleInternal.ServiceObjects.OracleConnectionImpl.Connect(ConnectionString cs, Boolean bOpenEndUserSession, String instanceName)
 --- End of inner exception stack trace ---
    at OracleInternal.ConnectionPool.PoolManager`3.Get(ConnectionString csWithDiffOrNewPwd, Boolean bGetForApp, String affinityInstanceName, Boolean bForceMatch)
   at OracleInternal.ConnectionPool.OraclePoolManager.Get(ConnectionString csWithNewPassword, Boolean bGetForApp, String affinityInstanceName, Boolean bForceMatch)
   at OracleInternal.ConnectionPool.OracleConnectionDispenser`3.Get(ConnectionString cs, PM conPM, ConnectionString pmCS, SecureString securedPassword, SecureString securedProxyPassword)
   at Oracle.ManagedDataAccess.Client.OracleConnection.Open()
   at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.&lt;Open&gt;b__36(DbConnection t, DbConnectionInterceptionContext c)
   at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext](TTarget target, Action`2 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
   at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open(DbConnection connection, DbInterceptionContext interceptionContext)
   at System.Data.Entity.Core.EntityClient.EntityConnection.&lt;Open&gt;b__2()
   at System.Data.Entity.Infrastructure.DefaultExecutionStrategy.Execute(Action operation)
   at System.Data.Entity.Core.EntityClient.EntityConnection.Open()
 --- End of inner exception stack trace ---
    at System.Data.Entity.Core.EntityClient.EntityConnection.Open()
   at System.Data.Entity.Core.Objects.ObjectContext.EnsureConnection(Boolean shouldMonitorTransactions)
   at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.&lt;&gt;c__DisplayClass7.&lt;GetResults&gt;b__5()
   at System.Data.Entity.Infrastructure.DefaultExecutionStrategy.Execute[TResult](Func`1 operation)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.&lt;System.Collections.Generic.IEnumerable&lt;T&gt;.GetEnumerator&gt;b__0()
   at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext()
   at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source)
   at System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.&lt;GetElementFunction&gt;b__3[TResult](IEnumerable`1 sequence)
   at System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.ExecuteSingle[TResult](IEnumerable`1 query, Expression queryRoot)
   at System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[TResult](Expression expression)
   at System.Data.Entity.Internal.Linq.DbQueryProvider.Execute[TResult](Expression expression)
   at System.Linq.Queryable.Single[TSource](IQueryable`1 source, Expression`1 predicate)
 </StackTrace>
        </ErrorInfo>

从VS Test Runner或使用mstest的命令行运行测试时抛出异常.Visual Studio中的Oracle数据库工具会引发相同的异常.
在应用程序中,使用Oracle ManagedDataAccess提供程序.包版本为12.1.2400.
操作系统:Windows 10 Pro x64
本地发布到IIS的应用程序工作得很好.数据库连接没有任何问题.
有人知道如何解决这个问题吗？

提前致谢!

Answer 1

同样的问题在这里 今天我重新打开了一个8月份启动的控制台应用程序,Oracle给了我同样的例外.
解决了从NuGet 切换回Oracle.ManagedDataAccess版本12.1.22的问题.

更新2016-12-27

在此处找到最终解决方案:https://community.oracle.com/thread/3972810 问题是由SQLNET.AUTHENTICATION_SERVICES设置为NLS引起的.
要解决此问题,您必须编辑app.config/web.config:

<oracle.manageddataaccess.client>
  <version number="*">
    <dataSources>
      <dataSource alias="SampleDataSource" descriptor="(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL))) "/>
    </dataSources>
    <settings>
      <setting name="SQLNET.AUTHENTICATION_SERVICES" value=""/>
    </settings>
  </version>
</oracle.manageddataaccess.client>

我添加了该<settings>部分.