Mike,
One
other external source to look into is the udump directory. See if an
sbtio.log file exists. Sometimes, Rman will write logs into this
file. If the file doesn't exist, then it is another hint that rman has not
been used.
I
would say that if you can't find any Rman save sets
If the tables in the RMAN instance have not been populated they that
instance did not perform any backup functions. It is not to say that a
different instance on a distant server did not perform any RMAN backup
function.
Read the activity log posted at each server for activities on the
machine.
RMAN writes to the control file(s) when it runs. Try this:
SQL select view_name from dba_views where view_name like '%BACK%';
VIEW_NAME
--
DBA_ROLLBACK_SEGS
GV_$BACKUP
GV_$BACKUP_ASYNC_IO
GV_$BACKUP_CORRUPTION
GV_$BACKUP_DATAFILE
GV_$BACKUP_DEVICE
GV_$BACKUP_PIECE
