数据库

位置:IT落伍者 >> 数据库 >> 浏览文章

Oracle DBA数据库结构试题精选(2)


发布日期:2019年03月22日
 
Oracle DBA数据库结构试题精选(2)

Q : When will the rollback information applied in the event of a database crash

before the crash occurs

after the recovery is complete

immediately after reopening the database before the recovery

roll back infrmation is never applied if the database crashes

Q : The data dictionary tables and views are stored in

USERS tablespace

SYSTEM tablespace

TEMPORARY tablespace

any of the three

Q : Oracle uses the data dictionary tables and views

to make the database user friendly

to store user data

to store application data

for proper database functioning

Q : No data in any data dictionary tables should be deleted or altered by any user Which of the following object is an exception to this rule

AUD$

PENDING_SESSIONS$

USER_HISTORY$

PENDING_TRANS$

Q : A collection of segments is a (an)

extent

segment

tablespace

database

Q : When the database is open which of the following tablespaces must be online

SYSTEM

TEMPORARY

ROLLBACK

USERS

Q : Sorts can be managed efficiently by assigning ____ tablespace to sort operations

SYSEM

TEMPORARY

ROLLBACK

USERS

Q : The sort segment of a temporary tablespace is created

at the time of the first sort operation

when the TEMPORARY tablespace is created

when the memory required for sorting is kb

all of the above

Q : Which of the following segments is self administered

TEMPORARY

ROLLBACK

CACHE

INDEX

Q : What is the default temporary tablespace if no temporary tablespace is defined

ROLLBACK

USERS

INDEX

SYSTEM

Q : Rollback segments are used for

read consistency

rolling back transactions

recovering the database

all of the above

Q : Rollback segment stores

old values of the data changed by each transaction

new values of the data changed by each transaction

both old and new values of the data changed by each transaction

none

上一篇:深入了解Oracle数据字典

下一篇:更改Oracle数据库表的表空间