hi,
we have a number of databases that are backed up once per night. from my understanding this reset the LSN of the logs. If lost my database I would only be able to restore my database to that point in time say 1am every night. if I do transaction log backups every 15min I would be able to add these logs to the restore and restore up to fifteen minutes of a failure. say the database failed at 11am I would be able to restore the db and the replay the logs up to 1045? does this sound correct?
If the above is true my next question would be around the backup of the database. if the db has a full backup at 1am and finishes at 1:38am, it then fails at 1:44am. After further investigation I find the point in time of that I need to recover to is 1:30am, would I just restore the last full and replay the logs of 1:15 and 1:30?
i supposed what I am getting at is, is there any point backuping up transaction logs while the database is been backed up?
thanks
phill