题目内容
（请给出正确答案）
提问人：网友d*******1
发布时间：2023年3月31日 20:04
[单选题]
You work as a database administrator for Supportcenter.cn. Users in the Supportcenter.cn PROD database complain about the slow response of transactions. While investigating the reason you find that the transactions are waiting for the undo segments to be available， and undo retention has been set to zero. What would you do to overcome this problem？（）
A.Increase the undo return B.Create more undo segments C.Create another undotablespace D.Increase the size of the undo tablespace
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