DBCC loginfo
-- The number of rows tells me how many VLFs are in my database
-- 列 filesize 单位 bytes
----the VLF is reusable. A status of 2 means that it is either active or recoverable; a status of 0 indicates that it is reusable or completely unused. VLF是可重复使用的。状态为2表示它处于活动状态或可恢复状态;状态为0表示它是可重用的或完全未使用的。