commit_transaction

# File activerecord/lib/active_record/connection_adapters/abstract/transaction.rb, line 502
      def commit_transaction
        @connection.lock.synchronize do
          transaction = @stack.last

          begin
            transaction.before_commit_records
          ensure
            @stack.pop
          end

          dirty_current_transaction if transaction.dirty?

          transaction.commit
          transaction.commit_records
        end
      end