sql-server - 使用 TCP/IP 连接到 SQL Server 2008

Question

当我尝试从 SQL Server Management Studio 使用 TCP/IP 连接时，出现以下错误。我需要一步一步的描述来解决我的问题。这里出了什么问题？

Cannot connect to 
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A network related or instance specific error when a connection to SQL Server...
(provider: Named pipe-provider, error: 40 -  SQL Server)
(.Net SqlClient Data Provider)

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For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=53&LinkId=20476

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Error Number: 53
Severity: 20
State: 0

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Program Location:

   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
   at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject)
   at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject)
   at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
   at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
   at System.Data.SqlClient.SqlConnection.Open()
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.ObjectExplorer.ValidateConnection(UIConnectionInfo ci, IServerType server)
   at Microsoft.SqlServer.Management.UI.ConnectionDlg.Connector.ConnectionThreadUser()

Answer 1

我经常忘记的是，即使您在 SQLServerNetwork->MSSQLServer 协议(protocol)中将 tcp 标记为启用，您仍然需要为您的服务器启用可能不同的 IP 地址。即使只有一个 NIC 的服务器也会有多个 IP 地址。

1. 点击上面列出的 MSSQLServer 协议(protocol)。
2. 然后在右侧 Pane 中启用 TCP/IP。
3. 现在双击 TCP/IP 以打开对话框窗口。
4. 如果您想监听服务器的所有 IP 地址，请在"is"中选择"is"第一个“协议(protocol)”选项卡上的“全部监听”框；否则
5. 选择“IP 地址”选项卡并通过设置“启用”来启用所需的 IP 地址是。