换句话说，后台应用程序应是一个类型2的应用程序。

In other words, the backend application should be a Type2 application.

youdao

很多情况下，用户甚至意识不到后台应用程序的存在。

In many cases, users will not even be aware of the existence of the daemonic application.

youdao

要想正常工作，后台应用程序应为类型1应用程序，且不能在现有的事务中调用JMS服务。

For this to work, the back-end application should be a Type1 application, and the JMS service should not be invoked within an existing transaction.

youdao