Certain c-tree housekeeping files should not be included in your dynamic dumps. When restoring dumps with these files in them, you may find you end up with DCRE_ERR (444) errors as these files collide with housekeeping files of the restore process itself. The following files should be excluded from your list of files to back up:
WARNING: Don't use *.FCS in your file list.
FAIRCOM.FCS - Maintains user and group security information. ALWAYS back up this file.
SEQUENCEDT.FCS - Sequence number pool and index. If using the sequence number feature this file is a must to back up.
SYSLOGDT.FCS - System logs. If using this feature, consider backing up this file.