Why&ensp;would&ensp;you&ensp;use&ensp;...

单项选择题 Why would you use the following FLASHBACK TABLE command？（）
FLASHBACK TABLE emp TO TIMESTAMP （’11：45’.’hh12：mi’）；

A. to undo the changes made to the EMP table since the specified time
B. to restore the EMP table that was wrongly dropped from the database
C. to view the transactions that have modified the EMP table since the specified time
D. to view the changes made to the EMP table for one or more rows since the specified time

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1.多项选择题In the parameter file of your production database， the FAST_START_MTTR_TARGET parameter is set to 300 to optimize instance recovery. While observing the performance of the database during instance recovery， you find that the redo log files are not sized properly to support this activity. Which two sources could you use to determine the optimal size of the redo log files？（）

A. the V$LOG view
B. the V$DBFILE view
C. the V$LOGFILE view
D. the V$INSTANCE_RECOVERY view
E. Oracle Enterprise Manager Database Control

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2.多项选择题You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）

A. ONLINE
B. REVERSE
C. PARALLEL
D. COMPRESS
E. NOLOGGING
F. COMPUTE STATISTICS

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3.单项选择题 You want to create a consumer group， GROUP1， and you execute the following command in the command-line interface：
SQL> EXEC DBMS_RESOURCE_MANAGER.CREATE_CONSUMER_GROUP （CONSUMER_GROUP =>’group1’， COMMENT => ’New Group’）；
This command errorsout displaying the following message：
ERROR at line 1：
ORA-01031： insufficient privileges
ORA-06512： at "SYS.DBMS_RMIN"， line 115
ORA-06512： at SYS.DBMS_RESOURCE_MANAGER"， line 108 ORA-06512： at line 1
What action would you take to overcome this error？（）

A. grant SYSDBA to the user
B. grant SYSOPER to the user
C. grant the RESOURCE role to the user
D. use the GRANT command to grant the ADMINISTER_RESOURCE_MANAGER privilege to the use
E. grant the ADMINISTER_RESOURCE_MANAGER privilege to the user by using the DBMS_RESOURCE_MANAGER_PRIVS package

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4.多项选择题Which two statements are correct regarding the Oracle Flashback Drop feature？（）

A. Recycle bin exists for the tables only in non-SYSTEM， locally managed tablespaces.
B. You can flash back a dropped table provided row movement has been enabled on the table.
C. If you drop an index before dropping its associated table， then the recovery of the index is not supported when you flash back the dropped table.
D. When you execute the DROP TABLESPACE？ INCLUDING CONTENTS command， the objects in the tablespace are places in the recycle bin.
E. When a dropped table is moved to the recycle bin， only the table is renamed to a system-generated name； its associated objects and constraints are not renamed.
F. If you drop a table that is protected by the recycle bin， then associated bitmap-joined indexes and materialized view logs are also stored in the recycle bin.

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5.单项选择题You lost a temporary file that belongs to the default temporary tablespace in your database. From the options provided， which approach would you take to solve the problem？（）

A. flash back the database
B. import the temporary tablespace from the last export
C. restore all the data files and temporary files from the last full database backup and perform a recovery
D. not perform a recovery， but create a new temporary tablespace， make it the default temporary tablespace and then drop the old tablespace

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6.多项选择题 These are the details about V$FLASHBACK_DATABASE_STAT： SQL> DESC v$FLASHBACK_DATABASE_STAT
Name Null？ Type
------------- -------- --------------
BEGIN_TIME DATE
END_TIME DATE
FLASHBACK_DATA NUMBER
DB_DATA NUMBER
REDO_DATA NUMBER
ESTIMATED_FLASHBACK_SIZE NUMBER
Which two statements regarding the V$FLASHBACK_DATABASE_STATview aretrue？（）

A. BEGIN_TIME is the time at which Flashback logging is enabled.
B. END_TIME is the time at which the query is executed on the view.
C. REDO_DATA is the number of bytes of redo data written during the interval.
D. This view contains information about flashback data pertaining to the last 24 hours.
E. FLASHBACK_DATA is the amount of flashback data generated since the database was opened.

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7.单项选择题You were recently hired by Certkiller .com as a database administrator. You are asked to find out whether the currently functional listener process， named L1， has been password protected or not. You are not familiar with the file system of the new organization. How would you accomplish the task？（）

A. by using the STATUS command of the Listener control utility
B. by using the STATUS L1 command of the Listener control utility
C. by using the SHOW RULES command of the Listener control utility
D. by using the SET PASSWORD command of the Listener control utility
E. by searching for the PASSWORD_LISTENER entry in the listener.ora file

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8.多项选择题When performing a backup using Recovery Manager （RMAN）， which four types of files can be backed up with the RMAN BACKUPcommand？（）

A. data file
B. password file
C. archivelog file
D. temporary file
E. online redo log file
F. the current control file
G. the tnsnames.ora file
H. current server parameter file

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9.单项选择题You work as a database administrator at Certkiller .com. You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEEStable. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）

A. perform point-in-time recovery
B. perform a Flashback Table operation to restore the table to the state it was in two days ago
C. perform a Flashback Database operation to restore the database to the state it was in two days ago
D. perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery

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10.单项选择题 You defined the Recovery Manager （RMAN） retention policy to recovery window of 7 days by executing the following command：
RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS；
When a backup is performed， what would be the status of this backup after seven days？（）

A. The backup would be marked as invalid.
B. The backup would be marked as obsolete.
C. The backup would be removed from the media.
D. The backup would be removed from the RMAN repository.

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