And those darn *MGTCOL objects used to get damaged so regularly that we
got into the habit of saving them to a save file before saving the entire
system to tape. That way, if the save file save flagged them as damaged
we would delete them before the hours long full system save. I had that
pmr open long enough to cover several releases of the OS. It's resolved
now. And for those of you who decry that a *MGTCOL object doesn't count
because it's not 'database', there was a *FILE object (PF or table) that
was that was also part of performance collecting that I also routinely
saved to save file before the full system save.
And, as others reported, I have had the occasional vendor supplied DB2
type file that got flagged as damaged during the backup.