Hi, I developed a mechanism which executes a logbackup if the size is above a treshold. I use DBCC SQLPERF(LOGSPACE) to calculate the size of being used. After a logbackup I assume the perc_used is reduced (at least for the committed part). However, this is not the case for some (sharepoint) databases and there are NO active transactions. As a result, I get a lot of very small logbackups. 1) Does somebody have an explanation for this? 2) Is there a way to calculate the committed size of a logbackup?