hi, i'm gabriele DBA of samu.it. sorry for my english ... i'm italian and i write not so good. i've a problem with the log file in a db mirroring (full safe with witness) configuration. it grows and it becomes very big in a few time. the only way i've found to reduce the size of the file is to stop mirroring, change the recovery mode in simple and shrink. i backup the database every 12 hours but log file grows the same. have u got any other suggestion? thank u very much for your answer.