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What Is Lsn in Sql

Chloe Bennett • • 8 min read
What Is Lsn in Sql

The log sequence number (LSN) value is a three-part, uniquely incrementing value. It is used for maintaining the sequence of the transaction log

What is an LSN number?

A log sequence number (LSN) represents the offset, in bytes, of a log record from the beginning of a database log file. It identifies the location within the log file of a specific log file record.

What is database backup LSN?

DatabaseBackupLSN is the “begin of checkpoint” that is triggered when the backup starts. This LSN will coincide with FirstLSN if the backup is taken when the database is idle and no replication is configured. So, it is correct to refer DatabaseBackupLSN to CheckpointLSN of a full backup.

Chloe Bennett
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Chloe Bennett

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