我们在Azure中遇到SqlBulkCopy问题。
上下文如下:我们有一个大约有1000万行的表。每行有大约15列。
我们正在将这些数据迁移到我们的新模型中,这需要拆分数据,因此包含15列的1行变为15行。
一开始就完美无缺。目标表现在包含17 767 235行,并且速度非常快。
此时,它开始抛出异常。
我做了一些修改以增加超时并使用批处理,但似乎它完全被阻止了。
这是最初的例外:
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
The statement has been terminated.; TraceSource 'WaWorkerHost.exe' event Services.DataMigration.Edmi_IN_0 5/9/2014 2:44 PM 2 1508 280
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject 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.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlBulkCopy.RunParser(BulkCopySimpleResultSet bulkCopyHandler)
at System.Data.SqlClient.SqlBulkCopy.CopyBatchesAsyncContinuedOnSuccess(BulkCopySimpleResultSet internalResults, String updateBulkCommandText, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.CopyBatchesAsyncContinued(BulkCopySimpleResultSet internalResults, String updateBulkCommandText, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.CopyBatchesAsync(BulkCopySimpleResultSet internalResults, String updateBulkCommandText, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternalRestContinuedAsync(BulkCopySimpleResultSet internalResults, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternalRestAsync(CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternalAsync(CancellationToken ctoken)
at System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServerAsync(Int32 columnCount, CancellationToken ctoken)
at System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table, DataRowState rowState)
答案 0 :(得分:3)
SQL Azure非常善于保护自己。这导致节流甚至断开。具有大量数据的标准批量复制技术通常会失败。我强烈建议您阅读Alexandre Brisebois关于Azure批量复制技术的博客文章: