Usually media failure is caused by either the complete loss of a data file or an SCN timestamp being out of sync with the rest of the database.

通常，导致媒介失败的原因是数据文件的完全丢失，或者 SCN 时间戳与数据库的其余部分不同步。

youdao

This mode provides less protection against transaction loss than SYNC, in exchange for a shorter transaction response time than SYNC mode.

此模式虽然比SYNC模式提供较少的事务丢失保护，但比SYNC模式的事务响应时间要短一些。

youdao

Usually media failure is caused by either the complete loss of a data file or a system change number (SCN) time stamp being out of sync with the rest of the database.

通常媒体故障是由于数据文件完全丢失或系统更改编号（System Change Number，SCN）时间戳与数据库的其余部分不同步造成的。

youdao