Post date: Jan 3, 2014 3:27:53 PM
DBCC TRACEON(1200,-1,3604);DECLARE @dummy VARBINARY(500);SELECT @dummy = CHECKSUM(*)FROM Customer WITH(UPDLOCK, ROWLOCK)WHERE JoinDate = '2012-10-23 18:23:36.0790000';DBCC TRACEOFF(1200,-1,3604);RETURN;-- Results, removed the releasing of the locks--Process 238 acquiring IX lock on OBJECT: 23:1618104805:0 (class bit2000000 ref1) result: OK--Process 238 acquiring IU lock on PAGE: 23:3:34712 (class bit2000000 ref0) result: OK--Process 238 acquiring U lock on KEY: 23:72057594055229440 (1d67b5278f3f) (class bit2000000 ref1) result: OK--Process 238 acquiring IU lock on PAGE: 23:3:30496 (class bit2000000 ref1) result: OK--Process 238 acquiring U lock on KEY: 23:72057594055098368 (a6e4d014ad5d) (class bit2000000 ref1) result: OK-- Use this query to see which indexes the query took locks onSELECT OBJECT_NAME(pt.object_id), i.name, partition_id , pt.object_id , pt.index_id , partition_number FROM sys.dm_db_partition_stats pt LEFT OUTER JOIN sys.indexes i ON i.object_id = pt.object_id AND i.index_id = pt.index_id WHERE partition_id IN( 72057594055229440, 72057594055098368);-- Inspect the page that was locked if neededDBCC TRACEON(3604)DBCC PAGE (23, 3, 34712, 0);DBCC TRACEOFF(3604)