单项选择题You are the Database Administrator for WonderWeb， which has recently acquired a media company TXGlobal. You have been assigned the task to migrate all the database applications of TXGlobal to the database server of WonderWeb. To accommodate more database applications， you need to add disks to the existing disk group. Whenever you add or remove disks from the disk group， Automatic Storage Management （ASM） rebalancing distributes the data evenly across all the disks of the disk group. Which background process performs this actual rebalancing activity， resulting in the movement of data extents in the disk groups？（）  

A. ASMB
B. ARBn
C. RBAL in the ASM instance
D. RBAL in the database instance

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1.单项选择题

Consider the following configuration：  
/devices/diskP1 is a member of disk group grp1.       
/devices/diskP2 is a member of disk group grp1.       
/devices/diskP3 is a member of disk group grp1.       
/devices/diskP4 is a candidate disk.       
/devices/diskQ1 is a member of disk group grp2.       
/devices/diskQ2 is a member of disk group grp2.       
/devices/diskQ3 is a member of disk group grp2.       
/devices/diskQ4 is a candidate disk.  
Which command will add the disk /devices/diskP4 to the disk group， grp1？（）  

A. ALTER DISKGROUP grp1  ADD DISK ’/devices/diskP1’，  ADD DISK ’/devices/diskP4’；
B. ALTER DISKGROUP grp1  ADD DISK ’/devices/disk*4’；
C. ALTER DISKGROUP grp1  ADD DISK ’/devices/diskP*’；
D. ALTER DISKGROUP grp1  ADD DISK ’/devices/diskQ*’，  ADD DISK ’/devices/diskP*’；

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2.单项选择题You are maintaining the SALES database on Oracle 10g. You have added a new disk to a disk group. Automatic Storage Management performs the rebalancing activity. You want to speed up the rebalancing activity. Which parameter will you specify to control the speed of the rebalancing activity？ （） 

A. ASM_POWER_LIMIT
B. ASM_DISKSTRING
C. ASM_DISKGROUPS
D. LARGE_POOL_SIZE

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3.单项选择题Which statement will NOT create a tablespace？（）

A. CREATE TABLESPACE DATA1 DATAFILE ’+grp1/abc（datafile）’；
B. CREATE TABLESPACE DATA1 DATAFILE ’+grp1’；
C. CREATE TABLESPACE DATA1 DATAFILE ’+data1（tempfile）’；
D. CREATE TABLESPACE DATA1 DATAFILE ’+grp1.256.34359’；

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4.单项选择题You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（）  

A. The database will not start.
B. The database will start but will not retain the undo data in the undo segment.
C. The database will start， and the undo segment will contain the undo data for at least one hour.
D. The database will start， and the undo segment will retain the undo data for at least 15 minutes.

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5.单项选择题You use the Memory Advisor to tune the memory structures of your database. What is the prerequisite to use the Memory Advisor？（）

A. The database must be in the ARCHIVELOG mode.
B. The automatic memory tuning must be enabled.
C. The change tracking feature must be enabled.
D. The automatic memory tuning must be disabled.

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6.单项选择题While running long running queries， you receive the Snapshot too old error. Which advisor can help you to avoid the Snapshot too old error？（）

A. Memory Advisor
B. Segment Advisor
C. Undo Advisor
D. SQL Tuning Advisor

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7.单项选择题Which component does the SQL Tuning Advisor NOT analyze for the SQL statements？（）  

A.ADDM
B.AWR
C.Cursor Cache
D.SQL Tuning Sets
E.Flash Recovery Area

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8.单项选择题You find that some queries on a table are taking a long time to execute because there are no indexes created on the table. You decide to invoke the SQL Access Advisor to determine the appropriate index to be created. Which package will you use to invoke the SQL Access Advisor？（） 

A.DBMS_SERVER_ALERT
B.DBMS_ADVISOR
C.DBMS_RESOURCE_MANAGER
D.DBMS_REPAIR

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9.单项选择题You find pockets of empty space in the USER_DATA tablespace due to a lot of DML operations on the objects in the USER_DATAtablespace. The pockets of empty spaces are too small to be reused individually. This is leading to wastage of space. You decide to perform the shrink operation to reclaim the wasted space. Which advisor will you use to determine the objects in the USER_DATA tablespace that are good candidates for the shrink operation？（）

A. SQL Tuning Advisor
B. SQL Access Advisor
C. Undo Advisor
D. Segment Advisor

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10.单项选择题You are maintaining the SALES database for eSoft Corporation. You have not configured ASMM on the database. You want to know what size of the SGA will provide the best performance.  Which advisor would you use to determine the suitable size of the SGA？（）

A. SQL Tuning Advisor
B. Undo Advisor
C. ADDM
D. Memory Advisor

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最新试题

In your database， all the tablespaces are locally managed. You started Recovery Manager （RMAN） using recovery catalog. The following commands are used in the process of recovering the database by using the backup control file： In what sequence would you use this process to perform the recovery？（）

题型：单项选择题

You configured the flash recovery area in the database. Which two files would you expect to find in the flash recovery area？ （）

题型：多项选择题

You have only two redo log groups and these groups get overwritten several times in a day. Your database operates in NOARCHIVELOG mode and user­managed consistent backups are performed every Sunday night. On Thursday morning， you find that an important table has been dropped and purged. With reference to this scenario， up to what point in time can the data be recovered？（）

题型：单项选择题

You performed a backup of the flash recovery area by using the following command for the first time：RMAN> BACKUP RECOVERY AREA; Which files in the flash recovery area are backed up？（）

题型：多项选择题

Your database operates in ARCHIVELOG mode. User­managed consistent backups are performed every Sunday night. On Tuesday， client A drops a table at 8：00 a.m. as follows： SQL> DROP TABLE cust_ord PURGE; Table dropped. Client B executes a query at 9：00 a.m. on the same table as follows： SQL> SELECT * FROM cust_ord;SELECT * FROM cust_ord* ERROR at line 1： ORA­00942： table or view does not exist Client B needs the dropped table and reports the problem to you. With reference to this scenario， which action should you take？（）

题型：单项选择题

View the Exhibit and examine the Flashback Database architecture. Identify the missing component （shown with a "？"） in the Flashback Database architecture.（）

题型：单项选择题

A data file became corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file.Which method would you use for recovery？（）

题型：单项选择题

You executed the following query in your database： FROM V$FLASHBACK_DATABASE_LOG; What would you determine from the output？（）

题型：单项选择题

You disabled the Flashback Database feature by using the following command： SQL> ALTER DATABASE FLASHBACK OFF; What would be the effect of this command on the existing flashback logs？（）

题型：单项选择题

One of the tablespaces is read­only in your database. The loss of all control files forced you to re­create the control file. Which operation do you need to perform after re­creating the control file and opening the database？（）

题型：单项选择题