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计算机考试 | Oracle认证考试

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单选题  A user issues a SELECT command against the Oracle database. Which of the following choices describes a step that Oracle will execute in support of this statement?()

A

Acquire locks on table queried 

B

Generate redo for statement 

C

Fetch data from disk into memory 

D

Write changes to disk

单选题 The DBA is defining role for users. Which of the following is not an acceptable method for defining a default role?()

A

ALTER USER DEFAULT ROLE ALL

B

ALTER USER DEFAULT ROLE ALL EXCEPT ROLE_1

C

ALTER USER DEFAULT ROLE NONE

D

ALTER USER DEFAULT ROLE NONE EXCEPT ROLE_1

单选题 In order to enable remote administration of users and tablespaces on an Oracle database, which of the following types of files must exist in the database?()

A

Password file 

B

Initialization file 

C

Datafile 

D

Control file 

E

Nothing - SYSDBA privileges are not required for these actions

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