The Command that Performs Subsequent Archive Dumps
Go Up to Using Journal Archiving
After the initial dump, performed by the CREATE JOURNAL ARCHIVE command, you use the following syntax to perform subsequent dumps:
gbak -archive_database <dbname>
This command performs a full, physical dump to the archive directory, which helps to reduce the number of journal files that must be stored. The older a dump is, the more journal files InterBase needs to keep the archive up-to-date.