单选题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 forwardB uses Flashback Log for recoveryC uses online redo logs to roll backD uses undo data to ro
题目
单选题
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
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参考答案和解析
正确答案：
A
解析：
暂无解析