Waitresource - Find Exact Key

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Waitresource - Find Exact Key

Ekta-246552

SSC Veteran

Points: 249
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February 16, 2007 at 7:08 am

#176072

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!
February 19, 2007 at 12:00 pm

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Jo Pattyn SSC-Dedicated Points: 32341 More actions · Answer 1

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 Right there with Babe Points: 745 More actions · Answer 2

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

egoddard SSC Rookie Points: 43 More actions · Answer 3

sys.partitions was introduced in SQL Server 2005, does anyone know the sql server 2000 equivalent?

kurt.yang SSC Veteran Points: 291 More actions · Answer 4

please refer

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

there is a detailed explaination for every kind of waitresrouce.

Avijeet Old Hand Points: 381 More actions · Answer 5

Avijeet

Old Hand

Points: 381

February 14, 2012 at 5:05 am

#1446769

Thanks it was really helpful information

james.stead Valued Member Points: 61 More actions · Answer 6

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

SQL_Hunt SSC-Dedicated Points: 33518 More actions · Answer 7

How to search this key value (@keyValue) in the code?

APPLICATION: 7:0:[TMsgRefs1]:(8886087a)

Thanks.

Alexander Suprun SSCertifiable Points: 6253 More actions · Answer 8

SQL-DBA-01 (1/18/2016)
How to search this key value (@keyValue) in the code?
APPLICATION: 7:0:[TMsgRefs1]:(8886087a)

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