You work as a database administrator for Certkiller .com. One of the user sessions was terminated abnormally in the middle of a transaction. What does Oracle database do to recover it?()
- AUses undo data for roll forward
- BUses Flashback Log for recovery
- CUses online redo logs to roll back
- DUses undo data to roll back the transaction
- EUses Recovery Manager (RMAN) to roll back
- FUses the System Monitor (SMON) background process to perform instance recovery