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Blocked by SPID -4


Blocked by SPID -4

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Neeraj Dwivedi
Neeraj Dwivedi
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Today I saw massive blocking in one of my production database instance. On looking further I found that some of the transactions being blocked by SPID-4. I was totally clueless.

I know SPID -2 related to orphaned DTC and -3 is deferred transaction. I have never before heard of or seen -4 SPID.

I would like to know if anybody has seen this before or what may have caused this.

Thanks for your help in advance.
Neeraj Dwivedi
Neeraj Dwivedi
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Some more info if it helps:-
SQL Server 2008 R2 SP2 standard edition.
Database is Synchronous mirroring on the cloud.
DNA_DBA
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See http://www.sqlservercentral.com/articles/System+Tables/66335 - it might help
Neeraj Dwivedi
Neeraj Dwivedi
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Thank you very- very much. It helped.
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