Rolls back the current transaction and starts a new transaction.
All processing must be executed within a transactional environment and the system provides default behaviour to ensure this:
a transaction is started automatically each time a post is received from the user, and
the current transaction is automatically committed just before the output page is presented to the user.
All processing must be executed within a transactional environment and the system provides default behaviour to ensure this: a transaction is started automatically each time a post is received from the user, and the current transaction is automatically committed just before the output page is presented to the user.