Select top 1 with UPDLOCK and READPAST sets exclusive lock on the entire table

Question

I\'m using the UPDLOCK and READPAST sql hints in a stored procedure in order to implement a sort of a table queue (I say a sort because I select top 1500 instead of a top 1,

Answer 1

I think your problem is indexing. Make sure you have the proper indexes on your table and make sure your queries always use that index. Having no, or the incorrect index can make SQL Server take a page lock or a table lock, which invalidates the whole model.