In my version (3.1.1) of available_media, a tape is assigned the attribute of
"DBBACKUP" when the script can't find anything better for it to use. If the
mediaid (eg: XXXXXX) cannot be located when a "bpmedialist -mlist -l -v
XXXXXX" command is performed, then it's assumed to be a netbackup database
backup tape.

I did find in the past, examples of other problems that caused a tape to be
flagged in this fashion...(sorry, but I don't recall the exact details).  So
whenever I see such a flagged tape nowadays, I check out everything about
that mediaid to see what might have possibly caused it.

This is under netbackup 3.1.1....I don't know about 3.2.

JRS