[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.PrepareCommand(DbCommand command, DbConnection connection, DbTransaction transaction, CommandType commandType, String commandText, DbParameter[] commandParameters, Boolean& mustCloseConnection) +69
Discuz.Data.DbHelper.ExecuteNonQuery(DbConnection connection, CommandType commandType, String commandText, DbParameter[] commandParameters) +60
Discuz.Data.DbHelper.ExecuteNonQuery(CommandType commandType, String commandText, DbParameter[] commandParameters) +107
Discuz.Data.SqlServer.DataProvider.GetLastExecuteScheduledEventDateTime(String key, String serverName) +157
Discuz.Forum.ScheduledEvents.Event.get_ShouldExecute() +78
Discuz.Forum.ScheduledEvents.EventManager.Execute() +195
Discuz.Forum.HttpModule.ScheduledEventWorkCallback(Object sender) +30
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