由于 "%1" 数据库可能有尚未备份的大容量日志记录更改，所以无法启用数据库镜像。必须在镜像上还原主体数据库的上一次日志备份。

Database mirroring cannot be enabled because the "%1" database may have bulk logged changes that have not been backed up. The last log backup on the principal must be restored on the mirror.