500MBのDBからエクスポートされたbacpacファイルをインポートしたいのですが、テーブル数は約25000です。 bacpac自体は約18MBです。
SQL Server Management StudioのUIを介したインポートは、OutOfMemoryExceptionで失敗するため、次の方法でSqlPackage.exeを使用します。
"C:\Program Files (x86)\Microsoft SQL Server\120\DAC\bin\SqlPackage.exe" /Action:Import /SourceFile:"path\to\MyDB.bacpac" /TargetConnectionString:"Data Source=localhost;Initial Catalog=MyDB;Integrated Security=True;"
このコマンドを使用して、以前の(小さい、テーブルが少ない)バージョンのDBでインポートを実行できましたが、以下の出力で失敗します。ここで何かできますか?
Importing to database 'MyDB' on server 'localhost'.
Creating deployment plan
Initializing deployment
Verifying deployment plan
Analyzing deployment plan
Importing package schema and data into database
Updating database
An unexpected failure occurred: Data plan execution failed with message Unable t
o reconnect to database: Timeout expired. The timeout period elapsed prior to c
ompletion of the operation or the server is not responding..
Unhandled Exception: Microsoft.SqlServer.Dac.Data.DataException: Data plan execu
tion failed with message Unable to reconnect to database: Timeout expired. The
timeout period elapsed prior to completion of the operation or the server is not
responding. ---> Microsoft.Data.Tools.Schema.Sql.SchemaModel.SqlReverseEngineer
Exception: Unable to reconnect to database: Timeout expired. The timeout period
elapsed prior to completion of the operation or the server is not responding. -
--> System.Data.SqlClient.SqlException: Timeout expired. The timeout period ela
psed prior to completion of the operation or the server is not responding. --->
System.ComponentModel.Win32Exception: The wait operation timed out
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolea
n breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObj
ect stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand
cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler,
TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
at System.Data.SqlClient.SqlDataReader.get_MetaData()
at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, Run
Behavior runBehavior, String resetOptionsString)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBe
havior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 time
out, Task& task, Boolean asyncWrite, SqlDataReader ds, Boolean describeParameter
EncryptionRequest)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehav
ior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletio
nSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehav
ior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, S
tring method)
at System.Data.SqlClient.SqlCommand.ExecuteReader()
at Microsoft.Data.Tools.Schema.Sql.SchemaModel.SqlReverseEngineerImpl.Execute
Populators(Tuple`2 connectionTuple, IList`1 populators, Int32 totalPopulatorsCou
nt, Int32 startIndex, Boolean progressAlreadyUpdated, ReverseEngineerOption opti
on, SqlReverseEngineerRequest request)
--- End of inner exception stack trace ---
at Microsoft.Data.Tools.Schema.Sql.SchemaModel.SqlReverseEngineerImpl.Execute
PopulatorsInPass(SqlReverseEngineerConnectionContext context, ReverseEngineerOpt
ion option, SqlReverseEngineerRequest request, Int32 totalCount, Tuple`2[] popul
atorsArray)
at Microsoft.Data.Tools.Schema.Sql.SchemaModel.SqlReverseEngineerImpl.Populat
eBatch(SqlReverseEngineerConnectionContext context, SqlSchemaModel model, Revers
eEngineerOption option, ErrorManager errorManager, SqlReverseEngineerRequest req
uest, SqlImportScope importScope)
at Microsoft.Data.Tools.Schema.Sql.SchemaModel.SqlReverseEngineer.PopulateEle
ments(SqlReverseEngineerConnectionContext context, DataSchemaModel model, Revers
eEngineerOption option, ErrorManager errorManager, SqlImportScope importScope, S
qlReverseEngineerRequest[] requests)
at Microsoft.Data.Tools.Schema.Sql.Deployment.Steps.DacBulkCopyStep.GetImport
TableMetadata(ICollection`1 tables)
at Microsoft.Data.Tools.Schema.Sql.Deployment.Steps.DacBulkCopyStep.Execute(I
DbConnection conn, CancellationToken token)
at Microsoft.Data.Tools.Schema.Sql.Deployment.SqlPlanDeployment.Execute(Deplo
ymentPlanHandle plan, String connectionString, String targetDatabaseName, Boolea
n IsAzureTarget, String databaseScriptPath, String masterScriptPath, Cancellatio
nToken cancelToken)
at Microsoft.SqlServer.Dac.Deployment.PlanExecutor.Execute(DeploymentPlan pla
n, SqlConnectionStringBuilder connectionString, Boolean isAzureTarget, LoggingCo
ntext loggingContext, CancellationToken cancelToken)
--- End of inner exception stack trace ---
at Microsoft.SqlServer.Dac.Deployment.PlanExecutor.Execute(DeploymentPlan pla
n, SqlConnectionStringBuilder connectionString, Boolean isAzureTarget, LoggingCo
ntext loggingContext, CancellationToken cancelToken)
at Microsoft.SqlServer.Dac.DeployOperation.UpdateDatabaseData(LoggingContext
loggingContext, CancellationToken token)
at Microsoft.SqlServer.Dac.DeployOperation.<>c__DisplayClass10.<>c__DisplayCl
ass12.<CreatePlanExecutionOperation>b__f()
at Microsoft.Data.Tools.Schema.Sql.Dac.OperationLogger.Capture(Action action)
at Microsoft.SqlServer.Dac.DeployOperation.<>c__DisplayClass10.<CreatePlanExe
cutionOperation>b__e(Object operation, CancellationToken token)
at Microsoft.SqlServer.Dac.Operation.Microsoft.SqlServer.Dac.IOperation.Run(O
perationContext context)
at Microsoft.SqlServer.Dac.ReportMessageOperation.Microsoft.SqlServer.Dac.IOp
eration.Run(OperationContext context)
at Microsoft.SqlServer.Dac.DeployOperation.Microsoft.SqlServer.Dac.IOperation
.Run(OperationContext context)
at Microsoft.SqlServer.Dac.OperationExtension.Execute(IOperation operation, D
acLoggingContext loggingContext, CancellationToken cancellationToken)
at Microsoft.SqlServer.Dac.DacServices.InternalDeploy(IPackageSource packageS
ource, Boolean isDacpac, String targetDatabaseName, DacDeployOptions options, Ca
ncellationToken cancellationToken, DacLoggingContext loggingContext)
at Microsoft.SqlServer.Dac.DacServices.ImportBacpac(BacPackage package, Strin
g targetDatabaseName, DacImportOptions importOptions, Nullable`1 cancellationTok
en)
at Microsoft.Data.Tools.Schema.CommandLineTool.Program.DoImportBacpacOperatio
n(CommandLineArguments parsedArgs)
at Microsoft.Data.Tools.Schema.CommandLineTool.Program.PerformAction(CommandL
ineArguments parsedArgs)
at Microsoft.Data.Tools.Schema.CommandLineTool.Program.Run(String[] args)
at Microsoft.Data.Tools.Schema.CommandLineTool.Program.Main(String[] args)
解決策は、より大きなタイムアウトを指定するのと同じくらい簡単であることがわかります。ただし、どのタイムアウトが重要であるか(SqlPackage.exeにはいくつかのタイムアウトスイッチがあり、接続文字列で指定できる接続タイムアウトでもありません)、それはCommandTimeout
です。以下の変更されたコマンドは、多数のテーブルを含むbacpacを使用しても失敗しません(最後に新しく追加されたスイッチに注意してください)。
"C:\Program Files (x86)\Microsoft SQL Server\120\DAC\bin\SqlPackage.exe" /Action:Import /SourceFile:"path\to\MyDB.bacpac" /TargetConnectionString:"Data Source=localhost;Initial Catalog=MyDB;Integrated Security=True;" /p:CommandTimeout="0"
「0」はタイムアウトがないことを意味するため、これは、私のように開発のためにbacpacをローカルにインポートするなど、操作がスタックしたり、予期しない長時間実行されたりしても危険がない場合にのみ適用されます。