[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: SQL 网络接口, error: 26 - 定位指定的服务器/实例时出错)]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +428
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +499
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
Discuz.Data.DbHelper.ExecuteDatasetInMasterDB(CommandType commandType, String commandText, DbParameter[] commandParameters) +112
System.Data.SqlClient.SqlConnection.Open() +122
Discuz.Data.DbHelper.ExecuteDatasetInMasterDB(CommandType commandType, String commandText) +7
Discuz.Data.DbHelper.PrepareCommand(DbCommand command, DbConnection connection, DbTransaction transaction, CommandType commandType, String commandText, DbParameter[] commandParameters, Boolean& mustCloseConnection) +69
Discuz.Data.SqlServer.DataProvider.GetValidTemplateIDList() +36
Discuz.Data.DbHelper.ExecuteNonQuery(DbConnection connection, CommandType commandType, String commandText, DbParameter[] commandParameters) +60
Discuz.Data.Templates.GetValidTemplateIDList() +82
Discuz.Data.DbHelper.ExecuteNonQuery(CommandType commandType, String commandText, DbParameter[] commandParameters) +110
Discuz.Forum.Templates.GetValidTemplateIDList() +92
Discuz.Data.SqlServer.DataProvider.GetLastExecuteScheduledEventDateTime(String key, String serverName) +158
Discuz.Forum.ScheduledEvents.Event.get_ShouldExecute() +79
Discuz.Forum.HttpModule.ReUrl_BeginRequest(Object sender, EventArgs e) +1817
Discuz.Forum.ScheduledEvents.EventManager.Execute() +195
Discuz.Forum.HttpModule.ScheduledEventWorkCallback(Object sender) +30
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
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