After you set TRACKMOD to YES, you must back up the database before allowing applications to change data.

在将TRACKMOD设置为YES之后，您必须在允许应用程序更改数据之前备份数据库。

youdao

Use the RMAN utility to back up the database while the database is offline or online.

在数据库离线或在线的情况下，使用RMAN实用程序备份数据库。

youdao

Note that you can either back up the entire database or some selected table spaces within this database.

注意，可以备份整个数据库，也可以备份数据库中的某些表空间。

youdao

The new iOS 4.3.3 alters how the iPhone and the 3G iPad devices store and back up a built-in location database cache.

FORBES: Morning Tech Wrap: Apple, Sony, Intel