单项选择题

You execute the following set of commands to create a d……

You execute the following set of commands to create a database user and to grant the system privileges in your production environment.
SQL> CREATE USER user01
IDENTIFIED BY oracle DEFAULT TABLESPACE tbs1
TEMPORARY TABLESPACE temp PROFILE default
/
SQL> GRANT create session， create table TO user01；
While executing the command to create a table， the user gets the following error message and the CREATE TABLE.. command fails.
ERROR at line 1：
ORA-01950： no privileges on tablespace
What could be the possible reason for this error message？（）

A.The tablespace TBS1 is full.
B.The user is not the owner of the SYSTEM tablespace.
C.The user does not have quota on the TBS1 tablespace.
D.The user does not have sufficient system privileges to create table in the TBS1 tablespace.
E.The user does not have sufficient privileges to create table on the default permanent tablespace.

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单项选择题Redologfilesarenotmultiplexedinyourdatabase.Redologblocksarecorruptedingroup2，andarchivinghasstopped.Alltheredologsarefilledanddatabaseactivityishalted.Databasewriterhaswritteneverythingtodisk.Whichcommandwouldyouexecutetoproceedfurther？（）

A.RECOVER LOGFILE BLOCK GROUP 2；
B.ALTER DATABASE DROP LOGFILE GROUP 2；
C.ALTER DATABASE CLEAR LOGFILE GROUP 2；
D.ALTER DATABASE RECOVER LOGFILE GROUP 2；
E.ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 2；

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A.Group 2 is the active group.
B.Group 2 is the current group.
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A.A
B.B
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C.The modified blocks would be written to the control file.
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F.The modified blocks would be retained in the database buffer cache.

单项选择题UsersinyourPRODdatabasecomplainabouttheslowresponseofthetransactions.Whileinvestigatingthereason，youfindthatthetransactionsarewaitingfortheundosegmentstobeavailable，andundoretentionhasbeensettozero.Whatwouldyoudotoovercomethisproblem？（）

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