Are concurrency issues possible when using the WCF Service Behavior attribute set to ConcurrencyMode.Multiple and InstanceContextMode.PerCall?

Question

We have a WCF service that makes a good deal of transactional NHibernate calls. Occasionally we were seeing SQL timeouts, even though the calls were updating different rows and

Answer 1

I think its all depends on the requirement. If we are going to call the same service so many times then better we can use InstanceContextMode is Single and concurrencymode is multiple.