I need to plan a migration from a 80 Gb 7.3 instance on Netware to a 9.2 on Unix.

The 7.3 instance is running 24*7, there is no cold backup planned, only hot ones, and I need to minimize downtime during migration.

Using export/import would really take too much time, and AFAIK I cannot use a standy database mechanism to replicate my instance since versions differ...

If you have any idea, it will be welcome !!