What Is Sql Server Transaction Log Backup

A transaction log backup allows you to backup the transaction log. … If a transaction log backup is not taken and the database is not using the Simple recovery model the transaction log will continue to grow. A transaction log backup can be completed either using T-SQL or by using SSMS.

When should I take transaction log backup?

Minimally, you must have created at least one full backup before you can create any log backups. After that, the transaction log can be backed up at any time unless the log is already being backed up. We recommend you take log backups frequently, both to minimize work loss exposure and to truncate the transaction log.

What is the difference between transaction log backup and tail log backup?

A tail-log backup is a special type of transaction log backup. In this type of backup, the log records that have not been backed up are captured. This prevents data loss and maintains the log chain sequence. … In this way, we ensure that there is zero data loss and that a chain for the restore operation is maintained.