OCIEnvCreate失败错误 - 访问.aspx页面时

当我尝试通过localhost访问.aspx页面时,我目前陷入了ASP.NET错误.这是错误:

OCIEnvCreate失败,返回码为-1,但错误消息文本不可用.

描述:执行当前Web请求期间发生未处理的异常.请查看堆栈跟踪以获取有关错误及其源自代码的位置的更多信息.

异常详细信息:System.Exception:OCIEnvCreate失败,返回码为-1,但错误消息文本不可用.

堆栈跟踪:

[Exception: OCIEnvCreate failed with return code -1 but error message text was not available.]
   System.Data.OracleClient.OciHandle..ctor(OciHandle parentHandle, HTYPE handleType, MODE ocimode, HANDLEFLAG handleflags) +363
   System.Data.OracleClient.OciEnvironmentHandle..ctor(MODE environmentMode, Boolean unicode) +23
   System.Data.OracleClient.OracleInternalConnection.OpenOnLocalTransaction(String userName, String password, String serverName, Boolean integratedSecurity, Boolean unicode, Boolean omitOracleConnectionName) +122
   System.Data.OracleClient.OracleInternalConnection..ctor(OracleConnectionString connectionOptions) +135
   System.Data.OracleClient.OracleConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) +36
   System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +28
   System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424
   System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +68
   System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +519
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82
   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +104
   System.Data.OracleClient.OracleConnection.Open() +37
   Wilson.ORMapper.Internals.Connection..ctor(String connectString, CustomProvider customProvider) +287

[ORMapperException: ObjectSpace: Connection String is Invalid - OCIEnvCreate failed with return code -1 but error message text was not available.]
   Wilson.ORMapper.Internals.Connection..ctor(String connectString, CustomProvider customProvider) +357
   Wilson.ORMapper.Internals.Context.Init(XmlDocument xmlMappings, String connectString, CustomProvider customProvider, Int32 sessionMinutes, Int32 cleanupMinutes) +92
   Wilson.ORMapper.Internals.Context..ctor(Stream mappingStream, String connectString, CustomProvider customProvider, Int32 sessionMinutes, Int32 cleanupMinutes) +171
   Wilson.ORMapper.ObjectSpace..ctor(Stream mappingStream, String connectString, Provider providerType, Int32 sessionMinutes, Int32 cleanupMinutes) +66
   zedi.DataManager.GetDefaultInstance() in C:\projects\FINE Application Interface\Production\On-site Backlog\Source\Code\DataAccess\ORClasses\Data\DataManager.cs:155
   zedi.DataManager.get_ObjectSpaceGlobal() in C:\projects\FINE Application Interface\Production\On-site Backlog\Source\Code\DataAccess\ORClasses\Data\DataManager.cs:105
   zedi.DataManager.get_ObjectSpace() in C:\projects\FINE Application Interface\Production\On-site Backlog\Source\Code\DataAccess\ORClasses\Data\DataManager.cs:129
   zedi.DataObjects.CompanyBase.RetrieveQuery(ObjectQuery query) in C:\projects\FINE Application Interface\Production\On-site Backlog\Source\Code\DataAccess\ORClasses\DataObjects\Base\CompanyBase.cs:279
   zedi.DataObjects.CompanyBase.RetrieveAll(String sortClause) in C:\projects\FINE Application Interface\Production\On-site Backlog\Source\Code\DataAccess\ORClasses\DataObjects\Base\CompanyBase.cs:78
   maint_inetpub.siteTemplates.updateDeviceTemplate.Page_Load(Object sender, EventArgs e) in c:\projects\FINE Application Interface\Production\On-site Backlog\Source\Code\Websites\maint-inetpub\siteTemplates\updateDeviceTemplate.aspx.cs:47
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +33
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +47
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436

我注意到它说我有一个无效的连接字符串,但我测试了它,它的工作原理.我目前安装了Oracle 10g Express,之前我使用的是Oracle 8i Client.在我安装10g Express之前它正在工作.