4/9/2023 0 Comments Deadlock in sqlFurther technical detailsĭatabase provider: SqlException: Transaction (Process ID 52) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. HandleNonSuccessAndDebuggerNotification()ĭbUpdateException: An error occurred while updating the entries. ExecuteDbDataReaderAsync.AnonymousMethod_164_0() This exception was originally thrown at this call stack: Source=Īt ._7 2.MoveNext() at .Throw() at .ThrowForNonSuccess(Task task) at .HandleNonSuccessAndDebuggerNotification(Task task) at 1.GetResult()Īt _54.MoveNext()Īt .Throw()Īt .ThrowForNonSuccess(Task task)Īt .HandleNonSuccessAndDebuggerNotification(Task task)Īt `1.ConfiguredTaskAwaiter.GetResult()Īt _2.MoveNext() in C:\Users\x\source\repos\EFCoreConcurrencyTest\EFCoreConcurrencyTest\Program.cs:line 45Īt .GetResult()Īt _1.MoveNext() in C:\Users\x\source\repos\EFCoreConcurrencyTest\EFCoreConcurrencyTest\Program.cs:line 28Īt EFCoreConcurrencyTest.Program.(String args) Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseSqlServer' call. Message=An exception has been raised that is likely due to a transient failure. Int result = await base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken).ConfigureAwait(false) Īwait trans.CommitAsync().ConfigureAwait(false) Var trans = await Database.BeginTransactionAsync().ConfigureAwait(false) Public override async Task SaveChangesAsync(bool acceptAllChangesOnSuccess, CancellationToken cancellationToken = default) Using ( var context = new AppDbContext())Ĭontext. Private static async Task CreateDataAsync( ManualResetEvent trigger, ManualResetEvent signalReady) Var task = CreateDataAsync( trigger, readySignal) Var readySignal = new ManualResetEvent( false) A restart of the SQL Server will clear all blocking processes.Var trigger = new ManualResetEvent( false) įoreach( int index in Enumerable. If the blocking process is not eliminated by using the Kill Process, your last resort will be to restart the server. To stop the blocking process, right-click it and choose Kill Process. This will sort by the column and show you all the blocked processes. Next step is to identify the process that is waiting. To find a blocked process with Activity Monitor, expand Processes in Activity Monitor to view more details about the processes. To open Activity Monitor in SQL Server Management Studio, right-click the SQL Server instance name in Object Explorer and then select Activity Monitor. To fix this issue, we will use the Activity Monitor to identify the blocking process and then if possible kill it.Īctivity Monitor is a tool in SQL Server Management Studio that gives you a view of current connections, processes, and locks held on SQL Server resources. This can be a serious condition, not just for SQL Server as processes become suspended, but for the applications which rely on SQL Server as well. Although in SQL Server a blocked process usually resolves itself when the first process releases the resource but there are times when a process holds a transaction lock and doesn’t release it. Basically, it is a conflict in which one process is waiting for another to release a resource.
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