单选题AUM has been retaining about 15 minutes worth of undo. You want to double the retentionperiod， but not at the expense of new transactions failing. You decide to alter the system to set the parameter UNDO_RETENTION=18000. However， AUM still retains only

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单选题

AUM has been retaining about 15 minutes worth of undo. You want to double the retentionperiod， but not at the expense of new transactions failing. You decide to alter the system to set the parameter UNDO_RETENTION=18000. However， AUM still retains only about 15 minutes worth of undo. What is the problem？（）

You need to alter the undo tablespace to add the RETENTION GUARANTEE setting.

You need to increase the size of the undo tablespace.

The undo tablespace is not set to auto-extend.

You need to alter the Recycle Bin to add the RETENTION GUARANTEE setting.

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相似问题和答案

第1题：

听力原文：M: So, Jane, how long have you been an author?

W: Well, Tom, I didn't start writing until I was in my thirtieth, and I'm over seventy now. So goodness, I must have been writing for about forty years.

How long has the woman been an author?

A．About 30 years.

B．About 40 years.

C．About 60 years.

D．About 70 years.

正确答案：B
解析：数字计算题。文中出现3个数字，30岁开始写作，现在70岁，所以共写了40年。

第2题：

Millions of pounds’ worth of damage ( ) by a storm which swept across the north of England last night.

A. has been caused

B.have been caused

C.will be caused

D.will have been caused

参考答案：A

第3题：

Your hard work over the years for the company _____________.

A、is worth of a credit

B、gives him credit

C、does you credit

D、has lots of credit to you

参考答案：C

第4题：

Millions of pounds’ worth damage ______ by a storm which swept across the north of England last night.

A has been caused

B had been caused

C will be caused

D will have been caused

参考答案：A

第5题：

Ms Li ( ) about the food she has at lunch.

A、is always complaining

B、has always complaining

C、has always been complained

D、complains always

参考答案：A

第6题：

听力原文：M: No doubt you have already heard of the passing of Mr. Johnson.

W: Yes. services will be held for him tomorrow at St. Luke's church.

Q: What is known about Mr. Johnson?

(18)

A．He has just been dead.

B．He went home after church.

C．He has not felt well lately.

D．He will attend church tomorrow.

正确答案：A
解析：据理判断题。对话中男士认为女士已经知道Johnson先生去世的消息了，女士表示知道，并且葬礼(services)将于明天在St. Luke's教堂举行，可知Johnson先生过世了。故答案为A。

第7题：

Have you got five minutes to()?

A.spare

B.spared

C.has spared

D.spares

答案：A

解析：本句意思：你有五分钟空闲时间吗？本句考查动词不定式用法，动词不定式做时间名词five minutes的后置定语，不定式作定语，与其被修饰的词在逻辑上有主谓关系、动宾关系或同位关系。

这里是动宾关系，spare five minutes，所以选A。

第8题：

Helen loves to talk about travel. She _____ many places.

A. has gone to B. has been to C. has gone for D. has been from

正确答案：B

第9题：

( )thirty－five minutes enough for you to get there

A、Is

B、Have

C、Are

D、Has

参考答案：A

第10题：

Hurry up! The concert __________ for ten minutes.

A、has begun

B、had begun

C、has been on

D、began

正确答案：C

AUM has been retaining about 15 minutes worth of undo. You w

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