单选题You executed the following query： SELECT operation， undo_sql， table_name FROM flashback_transaction_query； Which statement is correct regarding the query output？（）A It would return information regarding only the last committed transaction.B It would r
题目
单选题
You executed the following query： SELECT operation， undo_sql， table_name FROM flashback_transaction_query； Which statement is correct regarding the query output？（）
A
It would return information regarding only the last committed transaction.
B
It would return only the active transactions in all the undo segments in the database.
C
It would return only the committed transactions in all the undo segments in the database.
D
It would return both active and committed transactions in all the undo segments in the database.
E
It would return information regarding the transactions that began and were committed in the last 30 minutes.
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参考答案和解析
正确答案：
A
解析：
暂无解析