[SqlException (0x80131904): 在与 SQL Server 建立连接时出现与网络相关的或特定于实例的错误。未找到或无法访问服务器。请验证实例名称是否正确并且 SQL Server 已配置为允许远程连接。 (provider: 命名管道提供程序, error: 40 - 无法打开到 SQL Server 的连接)]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +428
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
System.Data.SqlClient.SqlConnection.Open() +122
Discuz.Data.DbHelper.ExecuteScalarInMasterDB(CommandType commandType, String commandText, DbParameter[] commandParameters) +112
Discuz.Data.DbHelper.ExecuteScalarInMasterDB(CommandType commandType, String commandText) +7
Discuz.Data.SqlServer.DataProvider.GetOnlineAllUserCount() +36
Discuz.Data.OnlineUsers.GetOnlineAllUserCount() +38
Discuz.Forum.OnlineUsers.GetOnlineAllUserCount() +29
Discuz.Web.UI.ArchiverPage..ctor() +233
Discuz.Web.Archiver.showtopic..ctor() +124
ASP.bbs_archiver_showtopic_aspx..ctor() in c:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\5698ff30\a1cb9553\App_Web_2lpt3azi.1.cs:0
__ASP.FastObjectFactory_app_web_2lpt3azi.Create_ASP_bbs_archiver_showtopic_aspx() in c:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\5698ff30\a1cb9553\App_Web_2lpt3azi.3.cs:0
System.Web.Compilation.BuildResultCompiledType.CreateInstance() +32
System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +119
System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +33
System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +40
System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +160
System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +93
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
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