是否因为“无法连接到服务器”而不部署DACPAC？

Question

我正在尝试将DACPAC部署到LocalDB 2012，但它就是不具备：

堆栈跟踪如下：

==================================

Could not deploy package. (Microsoft.SqlServer.Dac)

------------------------------
Program Location:

   at Microsoft.SqlServer.Dac.DeployOperation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)
   at Microsoft.SqlServer.Dac.OperationExtension.Execute(IOperation operation, Action`2 reportStatus, CancellationToken cancellationToken)
   at Microsoft.SqlServer.Dac.DacServices.InternalDeploy(IPackageSource packageSource, Boolean isDacpac, String targetDatabaseName, DacDeployOptions options, CancellationToken cancellationToken)
   at Microsoft.SqlServer.Dac.DacServices.Deploy(DacPackage package, String targetDatabaseName, Boolean upgradeExisting, DacDeployOptions options, Nullable`1 cancellationToken)
   at Microsoft.SqlServer.Management.Dac.DacWizard.DeployModel.Install()
   at Microsoft.SqlServer.Management.Dac.DacWizard.DeployModel.RunAction()
   at Microsoft.SqlServer.Management.Dac.DacWizard.ExecuteDacPage.backgroundWorker1_DoWork(Object sender, DoWorkEventArgs e)
   at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
   at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)

===================================

Unable to connect to target server. (Microsoft.Data.Tools.Schema.Sql)

------------------------------
Program Location:

   at Microsoft.Data.Tools.Schema.Sql.Deployment.SqlDeploymentEndpointServer.OnInit(ErrorManager errors, String targetDBName)
   at Microsoft.Data.Tools.Schema.Sql.Deployment.SqlDeployment..ctor(SqlDeploymentConstructor constructor)
   at Microsoft.Data.Tools.Schema.Sql.Deployment.SqlDeploymentConstructor.ConstructServiceImplementation()
   at Microsoft.SqlServer.Dac.DacServices.CreatePackageToDatabaseDeployment(String connectionString, IPackageSource packageSource, String targetDatabaseName, DacDeployOptions options, ErrorManager errorManager)
   at Microsoft.SqlServer.Dac.DeployOperation.<>c__DisplayClass4.<CreatePlanInitializationOperation>b__0(Object operation, CancellationToken token)
   at Microsoft.SqlServer.Dac.Operation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)
   at Microsoft.SqlServer.Dac.ReportMessageOperation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)
   at Microsoft.SqlServer.Dac.OperationExtension.CompositeOperation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)
   at Microsoft.SqlServer.Dac.OperationExtension.CompositeOperation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)
   at Microsoft.SqlServer.Dac.OperationExtension.CompositeOperation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)
   at Microsoft.SqlServer.Dac.DeployOperation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)

现在，由于我正在尝试通过SSMS部署它，我知道我可以连接到服务器。我在Visual Studio中检查了解决方案，目标版本是SQL Server 2012，连接字符串似乎是正确的。

有趣的是，通过Visual Studio进行部署是可行的，但是我无法将数据库升级到数据层应用程序，我得到了这样的消息：

===================================

Database source is not a supported version of SQL Server (localdb)\MYINSTANCE: . (Microsoft.SqlServer.Dac)
------------------------------
Program Location:

   at Microsoft.SqlServer.Dac.DacServices.GetDatabaseSchemaProvider(String connectionString)
   at Microsoft.SqlServer.Dac.DacServices.InternalRegister(String targetDatabaseName, String applicationName, Version applicationVersion, String applicationDescription, ModelStorageType modelStorageType)
   at Microsoft.SqlServer.Dac.DacServices.<>c__DisplayClass29.<Register>b__28(Object operation, CancellationToken token)
   at Microsoft.SqlServer.Dac.Operation.Microsoft.SqlServer.Dac.IOperation.Run(OperationContext context)
   at Microsoft.SqlServer.Dac.OperationExtension.Execute(IOperation operation, Action`2 reportStatus, CancellationToken cancellationToken)
   at Microsoft.SqlServer.Dac.DacServices.Register(String targetDatabaseName, DacSchemaModelStorageType modelStorageType, String applicationName, Version applicationVersion, String applicationDescription)
   at Microsoft.SqlServer.Management.Dac.DacWizard.RegisterModel.RunAction()
   at Microsoft.SqlServer.Management.Dac.DacWizard.ExecuteDacPage.backgroundWorker1_DoWork(Object sender, DoWorkEventArgs e)
   at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
   at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)

我遗漏了什么？

Answer 1

更新到SSMS的最新版本应该可以解决此问题。你可以在这里找到：https://msdn.microsoft.com/en-us/library/mt238290.aspx

否则，请确认您使用的LocalDB版本为LocalDB 2012。为此，您可以对服务器运行以下查询：

select @@version

• 11.0.xxxx = SQL Server 2012
• 12.0.xxxx = SQL Server 2014
• 13.0.xxxx = SQL Server 2016

处理dacpac部署的库称为数据层应用程序框架，或DacFX。SSMS 2012使用的DacFX版本安装在：

C:\program files (x86)\Microsoft Sql Server\110\DAC\bin

请注意路径中的"110“，表示该版本的DacFX最高支持SQL Server 2012。SSMS 2014在类似路径中查找DacFX，但在120文件夹中，并且该版本的DacFX最多支持SQL Server 2014，依此类推。

当DacFX被要求部署到比所支持的版本更新的服务器版本时，它会给出“无法连接”的错误消息。(顺便说一句，错误消息在较新版本的DacFX中得到了改进)。

在某个时间点，Visual Studio使用上述路径中安装的DacFX版本，但大约在SQL Server工具中发布SQL Server2014支持的时候，进行了更改，Visual Studio在以下位置获得了自己的DacFX副本

C:\program files (x86)\Microsoft Visual Studio XX.0\Common7\IDE\Extensions\Microsoft\SQLDB\DAC\120

因此，这就是如何在不同版本的Visual Studio和SSMS之间获得不同的行为。

Answer 2

我也遇到了同样的问题，通过将可执行文件夹从"C:\program files (x86)\Microsoft Sql Server\110\DAC\bin“更改为"C:\program files (x86)\Microsoft Sql Server\120\DAC\bin”，修复了这个问题。

谢谢，Chandana