Sql server lock table while updating
I don't think that it comes with SQL Server Express, but if where you work there is also another edition of SQL Server, there is a good chance that you'll have profiler at your work place.
Other processes will not be able to get the same lock on the same record in the duration of taht X lock. Now let’s open session1 and run following code and leave the transaction open begin transaction update My Signal with(updlock) set Description = ' Value 1' where ID = 72057594038910976 print ' Do some work... Here is the explaination Session 1 owns X lock on the RID and trying to get U lock on the index key where Session 2 owns U lock on the index key and trying to get X lock to the RID. When you have with UPDLOCK hint added, the locking sequence will be In this case, we need UPDLOCK hint to apply U lock to the index key to prevent other sessions to get the U lock on the same resource.
I also don't remember if this trace flag applies to all connections, so I always run it with trace flags 3605 and -1:dbcc traceon (2605, 1204, -1).
Profiler is a tool that comes when you install the server's client tool.
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