---

One of the user sessions was terminated abnormally in the middle of a transaction. What does Oracle database do to recover it？（）
A:uses undo data for roll forward
B:uses Flashback Log for recovery
C:uses online redo logs to roll back
D:uses undo data to roll back the transaction
E:uses Recovery Manager （RMAN） to roll back
F:uses the System Monitor （SMON） background process to perform instance recovery

---

出自：Oracle认证

显示答案