In a log backup, the content of the log area is copied into files, and a version file is created for each log segment. The names of the version files consist of a file name (specified when the backup medium was defined) and a sequential number assigned by the database system (for example, logfile.001).
You must archive the version files regularly.
See also:
· Concepts of the Database System, Log Backup
· Database Manager CLI, Archiving the Version Files of the Log Area