Sitecore DB Locks

Following info is from:https://briancaos.wordpress.com/2014/10/23/sitecore-eventqueue-deadlocks-how-to-solve-them-and-how-to-avoid-them/

Sometimes database locks happen in Sitecore. This results in spinning and spinning. To check, go to your db and use the following query:

SELECT
db.name DBName,
tl.request_session_id,
wt.blocking_session_id,
OBJECT_NAME(p.OBJECT_ID) BlockedObjectName,
tl.resource_type,
h1.TEXT AS RequestingText,
h2.TEXT AS BlockingTest,
tl.request_mode
FROM sys.dm_tran_locks AS tl
INNER JOIN sys.databases db ON db.database_id = tl.resource_database_id
INNER JOIN sys.dm_os_waiting_tasks AS wt ON tl.lock_owner_address = wt.resource_address
INNER JOIN sys.partitions AS p ON p.hobt_id = tl.resource_associated_entity_id
INNER JOIN sys.dm_exec_connections ec1 ON ec1.session_id = tl.request_session_id
INNER JOIN sys.dm_exec_connections ec2 ON ec2.session_id = wt.blocking_session_id
CROSS APPLY sys.dm_exec_sql_text(ec1.most_recent_sql_handle) AS h1
CROSS APPLY sys.dm_exec_sql_text(ec2.most_recent_sql_handle) AS h2
GO

The blocking_session_id is the session id that causes the deadlock. You need to kill the blocking session. Run the kill command in the SQL Management Studio:

1 2	kill 205; kill 62;

Voila, the deadlock is gone.