Use DropIdentityMap instead
Clears the object cache.
NuGet Package: DevExpress.Xpo
All the persistent objects which were loaded using the current session are stored in the object cache. The DropCache method invalidates the object references thus enabling the garbage collector to free up the space which is occupied by the session object at a later time.
Note: Calling the DropCache method has the same effect as reconnecting a session.