Entity Framework select write lock

Entity Framework locking a table with a select

It is feasible, however you must send the SQL As far as I'm aware, utilizing LINQ prevents you from adding the locking hint:...ObjectContext.ExecuteStoreCommand( string.Format("select 1 from [{0}] with (tablockx, holdlock) where 0 = 1", tableName)); ...You will keep the lock until the transaction is fin...

How can I prevent Entity Framework from locking the database?

I'll offer my solution in order to put this to rest....I was essentially approaching this issue from the incorrect side of the solution; while calling, a transaction is utilized....SaveChanges()... Nonetheless, you may still access the database by using the following technique:...private static FrameEntities GetEntities() { FrameEntitie...

When doing many updates in Entity Framework 4, how do you avoid locking the database?

That kind of lock is not produced by Entity Framework. EF does not allow pessimistic locking; it only supports optimistic concurrency....I believe that your SQL Server settings is to blame for the locking you encounter. The locks following each query could occur if your server's Transaction Isolation Level is configured to REPEATABLE READ. But I'm ...

Select * from Entities where Id = (select max(Id) from Entities) in Entity Framework

Could you give this a shot?...using(var container = new TheModelContainer()) { string maxEntityName = container.Entities.Max(e => e.Name); Entity maxEntity = container.Entities .Where(e => e.Name == maxEntityName) .FirstOrDefault(); } ...That would choose the highest value possible for..

How can I lock a table on read, using Entity Framework?

Really, the only way I could do this was by giving a table a lock statement by hand. Be cautious while using this because it locks the table at zzz-5zz! In my situation, it was helpful for setting up a queue that I didn't want other processes to interact with simultaneously....using (Entities entities = new Entities()) using (TransactionScope scope...

Best practice to lock a record for editing while using entity framework

Use of RowVersion and Optimistic locking is recommended....explained is ...Concurrency Patterns with Hope.......If utilizing Code first, add a field to your POCO after that....public virtual byte[] RowVersion { get; set; } ...Your table will receive a Timestamp/RowVersion property from EF. It will be examined while updating. And the DB instantly up...

Entity Framework - select group by, select max date

Do the following.... return _ctx.Notes.Select(r => new NoteBrief { Id = r.Id, Title = r.Title, Created = r.Created, ParentNoteId = r.ParentNoteId, }).OrderBy(x=>x.Created).GroupBy(x=>new {Id=x.Id, Title=x.Title}).Select(x=>x.First()).AsQueryable(); ...}

How to totally lock a row in Entity Framework

Since EF lacks an internal locking mechanism, you would likely need to use a raw query like...using (var scope = new TransactionScope(...)) { using (var context = new YourContext(...)) { var wallet = context.ExecuteStoreQuery<UserWallet>("SELECT UserId, WalletId, Balance FROM UserWallets WITH (UPDLOCK) WHERE ..."); ...

Entity Framework read queries locking all database

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Async/Await and Entity Framework SQL Procedure UI Thread Locking

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