Transaction logs such as log records and log marks.Any incomplete transaction that occurs during the time of the transaction log backup rolls back during the transaction log restore operation. You cannot perform a point-in-time restore from a full or a differential backup alone.ĭuring a transaction log restore operation, if dirty pages are included, the completed transaction rolls forward. This backup is consistent and contains only the new changes since the last full backup or since the backup of another transaction log.Īfter a database failure, you can run the transaction log backup to recover data to the point of failure. Dirty pages are excluded during a transaction log backup operation. For example, a full backup must be performed before a differential backup can be initiated.Ī differential backup contains only the data that is new or has changed since the last full backup.Ī transaction log backup operation backs up the transaction logs that contain records of all the committed and uncommitted transactions. For Agents that support non-full backups, the full backup becomes a baseline to which subsequent backup types are applied. You can run backups immediately or configure a schedule for the subclient.īackups for any client start with a full backup. If the database must be accessible and you have a small backup window, run a series of online backups for different database portions. You can back up online or offline SQL databases, log files, or SQL datafiles and tablespaces.
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