July 17, 2009 at 5:12 am
Hi Expertz
These procedures are blocking other processes.
Lock created is "LOCK_M_S".
In Most case the blocking is started from the Host_A which at that moment is exec "SP_UNPREPARE" and the other hosts who are being blocked are is exec "SP_PREPEXEC" as shown by Activity Monitor.
Can give me any suggestion what could have caused this.
What is a possible solution for avoiding these blocks
Tanx 😀
July 20, 2009 at 12:04 am
Please help...........
Tanx 😀
July 21, 2009 at 10:48 pm
Please help...........
Tanx 😀
August 5, 2009 at 6:34 am
Eswin (7/17/2009)
Hi ExpertzThese procedures are blocking other processes.
Lock created is "LOCK_M_S".
In Most case the blocking is started from the Host_A which at that moment is exec "SP_UNPREPARE" and the other hosts who are being blocked are is exec "SP_PREPEXEC" as shown by Activity Monitor.
Can give me any suggestion what could have caused this.
What is a possible solution for avoiding these blocks
In MOST cases, when is occuring other times? How long does the blocking last?
August 5, 2009 at 7:06 am
I would need to know what the procs are that are blocking each other and what objects they are accessing. Blocks aren't necessarily a bad thing. They just mean something has a lock on some resource.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
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August 6, 2009 at 12:29 am
Lynn Pettis (8/5/2009)
In MOST cases, when is occuring other times? How long does the blocking last?
I waited for about 20-30 min , then had to kill it as the developers were not able to connect through their applications.
GSquared (8/5/2009)
I would need to know what the procs are that are blocking each other and what objects they are accessing. Blocks aren't necessarily a bad thing. They just mean something has a lock on some resource.
The query was just a select statement run from Aqua Data Studio and the result has around 220 rows.
select distinct
emp.First_Name,emp.Last_Name,emp.Middle_Name,
comp.employee_id,comp.request_dt,comp.numofdays,
comp.reason,comp.request_by,comp.approve_dt,
tech.First_Name+' ' +tech.Last_Name+' '+isNull(tech.Middle_Name,'') as REQUESTEDBY,
comp.approve_status,comp.approve_desc,
case when (comp.approve_by) is null then '' else ( select first_name+' '+last_name from employee_tbl where user_id=comp.approve_by) end as APPROVEBY
from
employee_tbl emp,tl_compoff_tbl comp,TL_activity_tbl tla
,employee_tbl tech
where emp.employee_id = comp.employee_id
and comp.employee_id = tla.employee_id
and emp.employee_id = tla.employee_id
and comp.request_by = 'AST/016'
and emp.employee_status = 'A'
and (comp.approve_status='O' or comp.approve_status='D')
and tla.status='A'
and getdate() between tla.start_date and tla.end_date
and tech.User_Id = comp.request_by
order by comp.approve_status--emp.First_Name
"SP_UNPREPARE" was blocking "SP_PREPEXEC" when i checked through Activity Monitor.
Tanx 😀
August 6, 2009 at 7:05 am
It looks like that's the expected behavior.
Take a look at: http://jtds.sourceforge.net/apiCursors.html
That has some data on the use of those system procs and what they're for. Google/Bing/whatever for more.
I'm not familiar with Aqua Data Studio. Can you contact them about their use of the API procs? They might be able to help out.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
Property of The Thread
"Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon
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