File Class 
The configuration files and log files of the database system are allocated to different file classes:
backup |
Log files for backups and restores |
config |
Configuration files |
dump |
Memory dumps |
hist |
Diagnosis files |
lvc |
Log files for the SAP liveCache database instance type |
protocol |
General log files |
The file classes are required for packing database files before sending them to the Support team.
See also:
Concepts of the Database System
Database Manager CLI, 
diag_pack