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Can I stop a Maintenance Plan Reorganise Index task

Posted on 2009-05-07
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Last Modified: 2012-05-06
Is it safe to stop a Maintenance Plan Reorganise Index task? We have a job that has been running for 6 hours and is slowing down our most important server. The job is called DBMaintenance.Index Reorganise (Daily) which, I think, was the name given to it by the company that set up the server. The job appears to originate in the Maintenance Plans section of Management. It contains the following components: Reorganize Index Task, Update Statistics Task, Maintenance Cleanup Task. Assuming one of these is currently running, what will be the consequences of stopping the job?

Should a job of this sort last between 3 and 8 hours (times taken from Log File Viewer)?
Is it possible to see what the server is actually stuck on at the moment?
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Question by:Blim2
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Expert Comment

by:Jagdish Devaku
ID: 24324026
hi,

do not stop this job mainly the tasks that works on index.

it better you created separate sub plan for reorganize index task and schedule it in the late hours...

statitics task & cleanup tasks will not effect much....



 for your second question... (Is it possible to see what the server is actually stuck on at the moment?)

you run script given in the snippet...

bye....



use master
 
SELECT
             s.spid, BlockingSPID = s.blocked, DatabaseName = DB_NAME(s.dbid),
             s.program_name, s.loginame, ObjectName = OBJECT_NAME(objectid,                      s.dbid), Definition = CAST(text AS VARCHAR(MAX))
 INTO        #Processes
 FROM      sys.sysprocesses s
 CROSS APPLY sys.dm_exec_sql_text (sql_handle)
 
select * from #Processes;
 
WITH Blocking(SPID, BlockingSPID, BlockingStatement, RowNo, LevelRow)
 AS
 (
      SELECT
       s.SPID, s.BlockingSPID, s.Definition,
       ROW_NUMBER() OVER(ORDER BY s.SPID),
       0 AS LevelRow
     FROM
       #Processes s
       JOIN #Processes s1 ON s.SPID = s1.BlockingSPID
     WHERE
       s.BlockingSPID = 0
     UNION ALL
     SELECT
       r.SPID,  r.BlockingSPID, r.Definition,
       d.RowNo,
       d.LevelRow + 1
     FROM
       #Processes r
      JOIN Blocking d ON r.BlockingSPID = d.SPID
     WHERE
       r.BlockingSPID > 0
 )
 SELECT * FROM Blocking
 ORDER BY RowNo, LevelRow
 
Drop table #Processes

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Author Comment

by:Blim2
ID: 24324088
Hi,

Thanks for the code. Can I just confirm what it is doing: is the first result set a list of jobs currently running and the second result set a sub set  of those based on what might be blocking?

Is stopping a reindex job a very bad thing?

Thanks
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Accepted Solution

by:
Jagdish Devaku earned 250 total points
ID: 24324492
hi,

stopping reindex job when it is running is sometimes very risky... as i personally faced lot of issues doing so...

so i dont prefer doing this...

regarding the code details... you are partially right.

in second result set you need to check the last row which might may be in the suspended mode.

please let me know if you still have any questions...

bye...
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