複製SQL Server數據庫死鎖查詢受害者

Question

我有一個SQL Sever 2008 R2數據庫安裝程序和一個每小時運行一次查詢（大約需要3分鐘運行）的查詢。該查詢用其結果填充臨時表。

然而，每隔一段時間我得到這個錯誤：

Transaction (Process ID 63) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. [SQLSTATE 40001] (Error 1205)

這將停止正在運行的查詢。

處理此錯誤的最佳做法是什麼？

在此先感謝。

exec sp_executesql N'EXECUTE msdb.dbo.sp_sqlagent_log_jobhistory @job_id = @P1, @step_id = @P2, @sql_message_id = @P3, @sql_severity = @P4, @run_status = @P5, @run_date = @P6, @run_time = @P7, @run_duration = @P8, @operator_id_emailed = @P9, @operator_id_netsent = @P10, @operator_id_paged = @P11, @retries_attempted = @P12, @session_id = @P13, @message = @P14',N'@P1 uniqueidentifier,@P2 int,@P3 int,@P4 int,@P5 int,@P6 int,@P7 int,@P8 int,@P9 int,@P10 int,@P11 int,@P12 int,@P13 int,@P14 nvarchar(4000)','0A7AFD76-D2EC-463E-A802-8B66241B0D26',2,8153,13,0,20140320,110114,219,0,0,0,0,52,N'Executed as user: DOMAIN\sql. Transaction (Process ID 62) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. [SQLSTATE 40001] (Error 1205) Warning: Null value is eliminated by an aggregate or other SET operation. [SQLSTATE 01003] (Error 8153). The step failed.'

上面是返回表單分析器。

Answer 1

您需要調查造成死鎖的原因。解決方案將完全取決於您找到的內容。

• Analyze Deadlocks with SQL Server Profiler
• Save Deadlock Graphs (SQL Server Profiler)
• How To Monitor Deadlocks in SQL Server
• Deadlock Troubleshooting, Part 1
• Troubleshooting deadlocks in SQL Server

注意，如果你掃描一個表，而被更新死鎖是非常：關於這個問題的一些讀 l ikely。對複製代理主動修改的數據進行「3分鐘」查詢可能就是這種情況。理想情況下，您的查詢應該優化爲僅讀取相關數據（例如自上次讀取後發生了什麼變化）。出一個廉價的方式就是啓用版本的數據庫，閱讀Implementing Snapshot or Read Committed Snapshot Isolation in SQL Server: A Guide：

ALTER DATABASE <dbname> SET READ_COMMITTED_SNAPSHOT ON;