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Problems starting Database Engine Tuning Advisor on MSSQL Linux Install - Unable to find assembly DTAClient (mscorlib)

Marcel Flaig 1 Reputation point
2022-11-09T19:42:15.003+00:00

Hi,

we are running MSSQL on 2x Ubuntu 20.04.5 LTS Virtual Machines.

both machines are set up exactly the same and mssql has been configured and installed the same way - there were no error messages seen

we have a test machine where DTA is working.

on our LIVE Environment we get 

Failed to initialize MSD database for tuning (exit code: -1).(DTAClient)

when we directly try to connect with Database Engine tuning Advisor

and 

Unable to find assembly 'DTAClient Version=15.0.0.0., Culture=neutral, PublicKeyToken=....) (mscorlib)

when we use right-click inside MSSQL Management Studio toAnalyze the Querry in Database Engine Tuning Advisor,

on the other system it just works - on both systems the "sa" account was used. i can't find any error in the logs. how can i debug this further?
what really worries me is that there is no error in the logs and i didnt see any error on installation time.

thank you in advance and kind regards

Marcel

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  1. Marcel Flaig 1 Reputation point
    2022-11-09T19:47:21.927+00:00

    tried with MSSQL Studio in Admin mode and got

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

    Failed to write to an IPC Port: Die Pipe wird gerade geschlossen.
    (mscorlib)

    ------------------------------

    Program Location:

    Server stack trace:
    at System.Runtime.Remoting.Channels.Ipc.IpcPort.Write(Byte[] data, Int32 offset, Int32 size)
    at System.Runtime.Remoting.Channels.Ipc.PipeStream.Write(Byte[] buffer, Int32 offset, Int32 count)
    at System.Runtime.Remoting.Channels.ChunkedMemoryStream.WriteTo(Stream stream)
    at System.Runtime.Remoting.Channels.Ipc.IpcClientHandler.SendRequest(IMessage msg, ITransportHeaders headers, Stream contentStream)
    at System.Runtime.Remoting.Channels.Ipc.IpcClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream)
    at System.Runtime.Remoting.Channels.BinaryClientFormatterSink.SyncProcessMessage(IMessage msg)

    Exception rethrown at [0]:
    at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
    at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
    at Microsoft.SqlServer.Management.UI.VSIntegration.ISessionController.CreateSessionFromQuery(SqlConnectionInfo connectionInfo, String sqlQuery, String batchSeparator)
    at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.SqlScriptEditorControl.OnDatabaseTuningAdvisor(Object sender, EventArgs a)

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  2. Seeya Xi-MSFT 16,461 Reputation points
    2022-11-10T07:01:07.157+00:00

    Hi @Marcel Flaig ,

    Welcome to Microsoft Q&A! Run the follow query to check the 'DTAClient ' assembly:
    select * from sys.assemblies
    Alternatively, you can run select @@version to see what version you have. If the latest cumulative update is not installed, you can install the latest cumulative update.

    Best regards
    Seeya Xi