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单项选择题You executed the following query in your database： SELECT oldest_flashback_scn， oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG； What would you determine from the output？（）

A. The time when the last flashback operation in your database was performed.
B. The time when the first flashback operation in your database was performed.
C. A list of flashback operations performed in your database using SCN and time.
D. The approximate time and the lowest system change number （SCN） to which you can flash back your database.

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1.单项选择题You database operates in ARCHIVELOG mode and user-managed consistent backups are performed every Sunday night. On Tuesday， at 9：00 a.m. the current log sequence number was 369. Also， on Tuesday you lost the data file belonging to the SYSTEM tablespace and an achivelog file （sequence number 356） that contained redo entries between 8：00 a.m. and 8.30 a.m. With reference to this scenario， what would you do to recover the database？（）

A. Restore all the data files from last Sunday’s backup， and then perform a time-based recovery.
B. Restore all the data files from last Sunday’s backup， and then perform a cancel-based recovery.
C. Restore all the data files from last Sunday’s backup， and then perform a change-based recovery.
D. Restore only data files that belong to the SYSTEM tablespace from last Sunday’s backup， and then perform a complete recovery.

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2.多项选择题You lost a data file that belongs to an index tablespace in your database， which operates in ARCHIVELOG mode. Loss of the data file resulted in increased response time on your queries. Which two options would you use to solve this problem？（）

A. Restore the lost data file from the backup， and then flash back the database.
B. Restore the data file pertaining to index tablespace， and then recover the tablespace.
C. Restore all the data files， and then perform an incomplete recovery to get the tablespace back.
D. Restore all the data files， and then perform an incomplete recovery using the backup control file.
E. Drop and re-create the index tablespace， and then re-create all of the indexes in that tablespace.

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3.多项选择题 Users in your production database complain that they are getting the following error message while trying to insert rows into the ORDERS table：
ERROR at line 1：
ORA-01654： unable to extend index USERS.ORDERS_IND by 8 in tablespace INDEXES.While investigating， you find that the INDEXES tablespace has run out of space and there is no more free space on the disk where the data files are available. Which two actions could you perform to overcome this error without affecting the queries that are currently being executed？（）

A. Drop and re-create the inbox.
B. Coalesce the ORDERS_IND index.
C. Coalesce the INDEXES tablespace.
D. Drop and re-create the ORDERS table.
E. Rebuild the index online and move it to another tablespace.

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4.单项选择题You need to check the EMP_EAST partition in the EMPLOYEES table for physical corruptions. You also need to verify that the rows belong to the correct partition. Which option could you use？（）

A. LogMiner
B. The DBNEWID utility
C. The DBVERIFY utility
D. The ANALYZE command
E. The RMAN REPORT command
F. The RMAN CROSSCHECK command.
G. The RMAN BLOCKRECOVER command.

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5.单项选择题You want your listener to be password protected to prevent it from being shut down. You want to accomplish this task while the listener is functional. Which method could you use to achieve this objective？（）

A. Use the CHANGE_PASSWORD command of the Listener control utility.
B. Use the SET PASSWORD and SAVE_CONFIG commands of the Listener control utility.
C. Use the CHANGE_PASSWORD and SAVE_CONFIG commands of the Listener control utility.
D. Manually modify the listener.ora file to include the password for the listener and restart the listener.

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6.单项选择题Which statement is true regarding the creation of nested plans using Resource Manager？（）

A. Only one nested subplan is allowed.
B. The plans can be nested up to four levels.
C. Resource Manager does not support nested plans.
D. Nested plans control only the degree of parallelism but not the CPU.
E. Each nested plan gets a proportion of the CPU resources assigned to its parent group.

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7.多项选择题 You execute the following command to create two consumer groups， FIN_GROUP1 and PAY_GROUP1 for a plan， PROD_PLAN：
BEGIN
DBMS_RESOURCE_MANAGER.CREATE_SIMPLE_PLAN （SIMPLE_PLAN =>’prod_plan’，
CONSUMER_GROUP1 => ’fin_group1’，
GROUP1_CPU => 80，
CONSUMER_GROUP2 => ’pay_group1’，
GROUP2_CPU => 20）；
END；
Which three statements are true？（）

A. SYS_GROUP gets 100% CPU resources at level 1.
B. FIN_GROUP1 gets 80% CPU resources at level 1.
C. FIN_GROUP1 gets 80% CPU resources at level 2.
D. PAY_GROUP1 gets 20% CPU resources at level 1.
E. PAY_GROUP1 gets 20% CPU resources at level 2.
F. OTHER_GROUP gets 100% CPU resources at level 1.
G. OTHER_GROUP gets 100% CPU resources at level 2.

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8.单项选择题Your business has departmental reports that are generated every day. Each department must use the same set of queries， but access a different subset of data in the tables， depending on which department generates the report. The format of the reports is being developed； currently， the format changes daily. How would you configure the database to ensure that each department generates its report （based on its target data） using the most recent report format every day？（）

A. By having each user run the report generation procedure at the scheduled time， supplying the necessary input variables.
B. By creating a program using DBMS_JOB that accepts one or more variables， and creating a job that calls this program using DBMS_JOB.
C. By having each user schedule a job using DBMS_JOB that accepts one or more input variables and calls a procedure that generates the report.
D. By having each user create a job using DBMS_SCHEDULER that includes all the information and commands necessary to generate the report.
E. By creating a program using DBMS_SCHEDULER that accepts one or more variables， and creating a job that calls this program using DBMS_SCHEDULER.

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9.单项选择题 Consider the following command to add a new disk group called "tdgroupA" with two failover groups： CREATE DISKGROUP tdgroupA NORMAL REDUNDANCY FAILOVERGROUP control01 DISK
’/devices/A1’，
’/devices/A2’，
’/devices/A3’
FAILOVERGROUP control02 DISK
’/devices/B1’，
’/devices/B2’，
’/devices/B3’m
The disk "/devices/A1" is currently a member disk of a disk group by the name "tdgroup1".
Which task would be accomplished by the command？（）

A. This command would result in an error because a disk group can have only one failover group.
B. This command would result in an error because the /devices/A1 disk is a member of another disk group tdgroup1.
C. A new disk group called tdgroupA will be added with two failover groups and the /devices/A1 disk will get reattached to the new disk group without being detached from the existing one.
D. A new disk group called tdgroupA will be added with two failover groups and the /devices/A1 disk will be ignored for the new disk group because it is a member of an existing disk group tdgroup1.
E. A new disk group called tdgroupA will be added with two failover groups and the /devices/A1 disk gets detached from the existing disk group tdgroup1 and attached to the new disk group tdgroupA

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10.多项选择题You are working on an Oracle Database 10g database. For which purposes would you use the Flashback Transaction Query feature？（）

A. To recover a dropped table.
B. To recover a dropped schema.
C. To recover data from a truncated table.
D. To view changes made by all the transactions during a given period of time.
E. To view changes made by a single transaction during a given period of time.

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