We will be upgrading a TSM Server (AIX 4.3.3/ H80) with 100GB TSM DB.  This 
backup server plays an important role for our Oracle DB's as it archives the 
Oracle logs all day long.  (Not using RMAN yet) Our TSM upgrade from 4.1.6 to 
5.7.1 is estimated at 10-12 hours for the upgrade db process.  

If for some reason the upgrade fails we will have to recover ASAP for the sake 
of the oracle log file systems will be filling up.  With that said we are 
looking at a couple quick recovery options in case we have to roll back the TSM 
DB.  Here's a couple options we have though of so far... 

1) Create a Second TSM DB Copy Mirror (TSM Mirroring)  In hopes that we could 
break it off prior to the upgrade so it can then run as primary?
2) Do a backup db to a device type of file.

Any input or other ideas would be greatly appreciated!!!  I will be calling 
Tivoli Tech Support as well to see what they suggest.

Regards,

Charles