Dear friends.I need in your opinion.I use one russian ERP system. In this system documents like in other system make transaction in managerial and accounting systems. We operate with objects, and have no accsess directly to SQL Server and in transaction moment i do not see what really occuru on server. Previsiosly as i see for update they use standart schema(as they write in documentation) - update lock. In new version they wrote that this make a lot of unnesesary locks because of using serialized isolation level and changed this method. Now in object level they used another schema - immidiatly use select with exclusive lock with commited read(as they say on object level). And say that this is work better and decrease locking. For me interesting is using read commited with exclusive lock more effective than seriazable isolation level with update lock?
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