下午。我有几个 SQL 代理作业在 MS 2K8 BI 服务器上运行,其中一些每天运行,另一些每小时运行一次,每两分钟运行一次(另一个进程的心跳监视器)。还有一个应用程序可以每隔几分钟全天候导入数据。有时更新和报告的某些组合会发生冲突,一个或另一个会挂起半小时或更长时间,而不是通常的 60 秒。
虽然我需要找到这些竞争条件的根源,同时我想将某些作业设置为在五分钟后自动死亡。我可以在 SSIS 或 Windows 计划任务中执行此操作,但在 SQL 代理中看不到任何方法。这可能吗,还是我需要将任务包装在 SSIS 包中才能获得这种控制?
仅供参考,这是我最终使用的 SQL 代理作业:
DECLARE @Cancelled BIT
EXEC dbo.CancelJob @JobName = 'ETL - Daily', @Cancelled = @Cancelled OUT
IF @Cancelled = 1
BEGIN
DECLARE @Success INT
EXEC @Success = msdb..sp_send_dbmail
@profile_name = 'Reporting',
@recipients = 'reporting@mycompany.com',
@subject = 'Cancelled Daily ETL'
IF @Success <> 0 RAISERROR('An error occurred while attempting to send an e-mail.', 16, @Success)
END
...这是背后的代码CancelJob
:
CREATE PROCEDURE dbo.CancelJob(@JobName VARCHAR(100), @OwnerName VARCHAR(100) = NULL, @Cancelled BIT OUT)
AS BEGIN
IF @OwnerName IS NULL SET @OwnerName = SUSER_NAME()
SET @Cancelled = 0
CREATE TABLE #JobInfo
(
Job_ID UNIQUEIDENTIFIER,
Last_Run_Date INT,
Last_Run_Time INT,
Next_Run_Date INT,
Next_Run_Time INT,
Next_Run_Schedule_ID INT,
Requested_To_Run INT,
Request_Source INT,
Request_Source_ID VARCHAR(100),
Running INT, -- This is the only field we want (sigh)
Current_Step INT,
Current_Retry_Attempt INT,
State INT
)
INSERT INTO #JobInfo
EXEC xp_sqlagent_enum_jobs 1, @OwnerName
DECLARE @Running INT = (SELECT Running FROM #JobInfo AS JI INNER JOIN msdb..sysjobs_view AS J ON JI.Job_ID = J.job_id WHERE J.name = @JobName)
IF @Running = 1
BEGIN
BEGIN TRY
EXEC msdb..sp_stop_job @job_name = @JobName
SET @Cancelled = 1
END TRY
BEGIN CATCH
-- If an error occurs, it is *probably* because the job finished before we could cancel it, which is fine
END CATCH
END
END
GO
xp_sqlagent_enum_jobs
是避免无法捕获的错误的诀窍。