Log Backup 

When a log backup is executed, the database system backs up the content of the log area (redo log entries) to version files. You can also back up the redo log entries using an external backup tool.

The database system can then overwrite the backed up redo log entries in the log area.

See also:

Concepts of the Database System, Backing Up Log Entries

Database Manager GUI, Backups

Database Manager CLI, Backing Up and Restoring Database Instances

Database Administration in CCMS, Scheduling Log Backups