Hi,
I have 7 production databases . One database is of 80 gigs and rest are 10 gigs. How much time do you think it would take to finish my upgradation of the database from 8.1.7.4 to 9.2.0.1. I am testing in test machine.

I Installed 9.2 on sun machine. I am using db upgrade assistance to upgrade to 9.2.
It took for one small database 3 hours , then the downtime would be a lot. Is there any alternative solution for the downtime to be less when I do in real time production.

Any help what all should be done after finishing with dbua.

Thank you