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Waitresource - Find Exact Key


Waitresource - Find Exact Key

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Ekta-246552
Ekta-246552
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I am trying to interpret deadlock trace information. This is what I see in the waitresource

waitresource=KEY: 9:72057594065256448 (f20077ea2259)

Can someone help me decipher this?

Thanks!


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No one has responded to this topic yet. Even if you don't have a complete answer, the original poster will appreciate any thoughts you have!
Jo Pattyn
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Hello,

There is a page about locking in sql server 7,2000 where the key is described.

See http://support.microsoft.com/kb/224453/


JK-211484
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That might be a hobt_id. You find it through sys.partitions:

SELECT o.name, i.name
FROM sys.partitions p
JOIN sys.objects o ON p.object_id = o.object_id
JOIN sys.indexes i ON p.object_id = i.object_id
AND p.index_id = i.index_id
WHERE p.hobt_id = 72057594065256448
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sys.partitions was introduced in SQL Server 2005, does anyone know the sql server 2000 equivalent?
kurt.yang
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please refer

http://support.microsoft.com/kb/224453/

there is a detailed explaination for every kind of waitresrouce.
Avijeet
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Thanks it was really helpful information
james.stead
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I stumbled across this post looking for an answer. The link here says it is not possible to get back to the original row but that is not always true. With a low probability the below will return multiple rows because it uses a hash but typically I have found only one match.

declare @databaseName varchar(100) = 'Your Database'--DatabaseName
declare @keyValue varchar(100) = 'KEY: 10:72057600953614336 (0d0120c75d83)'--Output from deadlock graph
declare @lockres varchar(100)
declare @hobbitID bigint
select @hobbitID = convert(bigint,RTRIM(SUBSTRING(@keyValue,CHARINDEX(':',@keyValue,CHARINDEX(':',@keyValue)+1)+1,
CHARINDEX('(',@keyValue)-CHARINDEX(':',@keyValue,CHARINDEX(':',@keyValue)+1)-1)))
select @lockRes = RTRIM(SUBSTRING(@keyValue,CHARINDEX('(',@keyValue)+1,CHARINDEX(')',@keyValue)-CHARINDEX('(',@keyValue)-1))
declare @objectName sysname
declare @ObjectLookupSQL as nvarchar(max) = '
SELECT @objectName = o.name
FROM '+@databaseName+'.sys.partitions p
JOIN '+@databaseName+'.sys.indexes i ON p.index_id = i.index_id AND p.[object_id] = i.[object_id]
join '+@databaseName+'.sys.objects o on o.object_id = i.object_id
WHERE hobt_id = '+convert(nvarchar(50),@hobbitID)+'
'
exec sp_executesql @ObjectLookupSQL, N'@objectName sysname OUTPUT',@objectName=@objectName OUTPUT
select @objectName
declare @finalResult nvarchar(max) = N'select %%lockres%% ,*
from '+@databaseName+'.dbo.' + @objectName + '
where %%lockres%% = ''('+@lockRes+')''
'
exec sp_executesql @finalResult
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How to search this key value (@keyValue) in the code?

APPLICATION: 7:0:[TMsgRefs1]Sad8886087a)

Thanks.
Alexander Suprun
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SQL-DBA-01 (1/18/2016)
How to search this key value (@keyValue) in the code?

APPLICATION: 7:0:[TMsgRefs1]Sad8886087a)
Where do you see a "KEY"?
It's an - APPLICATION lock. Caused by sp_getapplock procedure in DB_ID = 7 and Resource = 'TMsgRefs1'


Alex Suprun
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