标签：oracle pac about sha share diff different tables oracl
46、Which three are true about undo segments and undo tablespaces in the same database and instance?
A. Multiple transactions run by the same Oracle user can share a single undo segment.
B. Multiple transactions run by different Oracle users can share a single undo segment.
C. A serial transaction can use multiple undo segments.
D. Undo segments are automatically dropped shortly after transactions that use them commit.
E. A new undo segment is always created for each transaction.
F. A database can have multiple undo tablespaces.
Correct Answer: ABF
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标签：oracle pac about sha share diff different tables oracl
原文地址：https://www.cnblogs.com/alice9313/p/9633223.html
