MODIFY RECOVERY dbname.tsname DELETE AGE (60) - To clean up entries older than 60 days.

MODIFY RECOVERY dbname . tsname DELETE AGE(60)：清理60天以上的条目。

youdao

MODIFY RECOVERY dbname.tsname retain LAST (30) - To clean up entries but retaining recent 30 entries.

MODIFY RECOVERY dbname . tsname RETAIN LAST(30)：清理条目，但保留最近的30个条目。

youdao

But also realize this: the recovery time depends not only on the total log file size, but the number of entries in it.

但是也要认识到这一点：恢复时间不仅仅取决于总的日志大小，也取决于日志里面的记录数。

youdao