> REDO in oracle is done by something known as a 'rollback segment'.
You are not seriously saying that you like the "rollback segments" in Oracle.
They only cause trouble:
1. configuration (for every different workload you need a different config)
2. snapshot too old
3. tx abort because rollback segments are full
4. They use up huge amounts of space (e.g. 20 Gb rollback seg for a 120 Gb SAP)
If I read the papers correctly Version 9 gets rid of Point 1 but the rest ...
Andreas
