客户在期角色到期以前，收到到期通知的所拥的时间。

The amount of time before a role expiration takes place that a customer is notified of its expiration.

youdao

db2alarm(报警线程)：当edu请求的计时器到期时通知EDU(仅在UNIX上)。

Db2alarm (alarm thread) : Notifies EDUs when their requested timer has expired (UNIX-only).

youdao

在密码到期之前，应该提前几天通知用户(到期之前每天都通知)？

How many days (and each day before expiration) before the password is due to expire should the user be informed?

youdao