get history of locks?

is it possible to get dates of when last data locks happened on select queries?
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25112Author Commented:
I checked master.syslockinfo but it does not have any date, but some binary data.

also master.dbo.syslockinfo  is bringing different count than master.sys.syslockinfo. i am assuming lock info is captured per db specific.
Vitor MontalvãoMSSQL Senior EngineerCommented:
You can't since the available information it's in general a snapshot of what's going on at the moment.
The only way it's to create a database where you can keep all those information for later verification.
Scott PletcherSenior DBACommented:
The new view is sys.dm_tran_locks.  But you won't find datetime.  I suspect that would be just too much overhead to keep up with.  When SQL gets busy, locks are taken and released at a huge rate, so trying to time stamp all of them would be too damaging to performance.
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25112Author Commented:
OK, what I get is that unless i profile(r), i cant capture past locks..

then, is there any value to this query, now:
select * from master.dbo.syslockinfo a join master.dbo.sysprocesses b on a.req_spid=b.spid where object_name(a.rsc_objid) is not null
Scott PletcherSenior DBACommented:
Hmm, I don't really know.  I haven't used those obsolete views in years, so I'm not familiar with them any more.
Vitor MontalvãoMSSQL Senior EngineerCommented:
That query only works if when you run it the lock still exists. If not, will return nothing.
Like I told you that's only work as snapshot not with stored information. For that you need to create your own monitoring tool or use one as SCOM or another one similar.
Vitor MontalvãoMSSQL Senior EngineerCommented:
Here's an article how to create your own monitoring tool for deadlocks.

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25112Author Commented:
thank you
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Microsoft SQL Server 2008

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