Session: How to Clear a Session
To clear session state, to stop tracking entities and remove all pending commands, etc. the clear
method is used from the advanced
session operations.
Syntax
void clear()
Example
Employee employee = new Employee();
employee.setFirstName("John");
employee.setLastName("Doe");
session.store(employee);
session.advanced().clear();
session.saveChanges(); // nothing will hapen