Deadlock in High-Concurrency Scenario: Missing Index on Lookup Column
A stored procedure designed to generate sequential identifiers encountered deadlocks under concurrent load.
CREATE PROCEDURE [dbo].[GetNextSequence]
@sequenceKey varchar(50),
@result int OUTPUT
AS
BEGIN
BEGIN TRY
BEGIN TRANSACTION
SELECT @result = CurrentVal
FROM sequence_table WITH (XLOCK, ROWLOCK) ...
Posted on Thu, 06 Aug 2026 16:29:09 +0000 by Kyrst