OS: Windows 7 64bit
VB: Visual Studio 2010
Oracle Client: 11g
我正在开发一个连接到 Oracle 11g 服务器的应用程序。我能够通过 Oracle SQL Developer、ODBC（在 SYSWOW64 中）和 VB Server Explorer 连接到 Oracle 服务器。
我正在使用位于以下位置的 .NET 参考 Oracle.DataAccess：C:\Oracle\product\11.2.0\client_32\ODP.NET\bin\2.x\Oracle.DataAccess.dll
我已尝试按照其他问题的建议将 .DLL 文件添加到我的 bin 文件夹中，但这不起作用。
有没有人有任何其他建议？
当我运行我的应用程序时，我得到以下信息：
以下是详细信息：
System.TypeInitializationException was unhandled
Message=The type initializer for 'Oracle.DataAccess.Client.OracleConnection' threw an exception.
Source=Oracle.DataAccess
TypeName=Oracle.DataAccess.Client.OracleConnection
StackTrace:
at Oracle.DataAccess.Client.OracleConnection..ctor(String connectionString)
at Orc_Test_1.Form1.Button1_Click(Object sender, EventArgs e) in c:\Visual Studio 2010\Projects\Orc_Test_1\Orc_Test_1\Form1.vb:line 9
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at Orc_Test_1.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: Oracle.DataAccess.Client.OracleException
DataSource=""
ErrorCode=-2147467259
Message=The provider is not compatible with the version of Oracle client
Number=-11
Procedure=""
Source=Oracle Data Provider for .NET
StackTrace:
at Oracle.DataAccess.Client.OracleInit.Initialize()
at Oracle.DataAccess.Client.OracleConnection..cctor()
InnerException:
VB.NET 代码：
Imports System.Data
Imports Oracle.DataAccess.Client ' ODP.NET Oracle managed provider
Imports Oracle.DataAccess.Types
Public Class Form1
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim oradb As String = "Data Source=SERVER1;Persist Security Info=True;User ID=username;Password=password;Unicode=True" 'From Server Explorer
'Dim oradb As String = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=Server1.host.net)(PORT=1522))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=Server1))); USER ID = username;Password = password;" 'From TNSnames.ora
Dim conn As New OracleConnection(oradb) '<--- Error happens on this line
conn.Open()
Dim cmd As New OracleCommand
cmd.Connection = conn
cmd.CommandText = "select system_id from schema1.system_impacted where system_name = AWESOME"
cmd.CommandType = CommandType.Text
Dim dr As OracleDataReader = cmd.ExecuteReader()
dr.Read()
Label1.Text = dr.Item("system_id")
conn.Dispose()
End Sub
End Class