You want to configure the Flashback Database feature and retain flashback logs for three days.
Presently the database is open and configured in ARCHIVELOG mode. The following steps must be performed in the correct sequence to do this：
1. Set the retention target：
SQL> ALTER SYSTEM SET DB_FLASHBACK_RETENTION_TARGET=4320；
2. Enable Flashback Database：
SQL> ALTER DATABASE FLASHBACK ON；
3. Mount the database：
SQL> STARTUP MOUNT EXCLUSIVE
4. Shutdown the instance： SQL> SHUTDOWN IMMEDIATE
5. Open the database：
SQL> ALTER DATABASE OPEN；
Choose the correct sequence.（）
A. 4， 1， 3， 2， 5
B. 4， 3， 1， 2， 5
C. 2， 4， 3， 5， 1
D. 4， 2， 5， 3， 1
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A. ALTER DISKGROUP misc MOUNT
B. ALTER DISKGROUP misc DROP DISK misc2
C. ALTER DISKGROUP misc CHECK ALL NOREPAIR
D. ALTER DISKGROUP misc RESIZE ALL SIZE 1023m
E. ALTER DISKGROUP dgroupA ADD DISK ’/devices/A*’
A. You can use RMAN stored scripts
B. Recovery is faster if data is stored in catalog in addition to the control file
C. You can store backup information of all registered databases in one place
D. Database backups are automatically deleted when they are older than the specified time period
The database is currently open and the temp03.dbf tempfile belonging to the default temporarytablespace TEMP has been corrupted.
What steps should you take to recover from this tempfile loss in an efficient manner？（）
A. Allow the database to continue running，drop the TEMP tablespace，and then re-create it with new tempfiles
B. Shut down the database， restore and recover the tempfile from backup，and then open the database with RESETLOGS
C. Allow the database to continue running，take the TEMP tablespace offline，drop the missing tempfile，and then create a new tempfile
D. Allow the database to continue running，add a new tempfile to TEMP tablespace with a new name，and drop the tempfile that has been corrupted
A. The tape I/O performed is asynchronous
B. The tape buffer is allocated from the System Global Area （SGA）
C. The tape buffer is allocated from the Program Global Area （PGA）
D. Oracle I/O uses an interrupt mechanism to determine when each I/O completes
Examine the following ALTER command：
SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS；
What is the purpose of the command？（）
A. It cancels all pending disk drops within the disk group.
B. It restores disks that are being dropped as the result of a DROP DISKGROUP operation
C. It mounts disks in the disk group for which the drop-disk operation has already been co pleted
D. It restores all the dropped disks in the disk group for which the drop-disk operation has already been completed
E. It adds previously dropped disks back into the disk group
You are using Recovery Manager （RMAN） with a recovery catalog to back up your production database. The backups and the archived redo log files are copied to a tape drive on a daily basis. Because of media failure， you lost your production database completely along with the recovery catalog database. You want to recover the target database and make it functional. You consider performing the following steps to accomplish the task：
1） Restore an autobackup of the server parameter file.
2） Restore the control file
3） Start the target database instance
4） Mount the database
5） Restore the data files
6） Open the database with RESETLOGS option
7） Recover the data files
8） Set DBID for the target database
Which option illustrates the correct sequence that you must use？（）
A. 8， 1， 3， 2， 4， 5， 7， 6
B. 1， 8， 3， 4， 2， 5， 7， 6
C. 1， 3， 4， 2， 8， 5， 6， 7
D. 1， 3， 2， 4， 6， 5， 7， 8
A. Creating the control file for the duplicate database
B. Restoring the target data files to the duplicate database
C. Performing complete recovery using all available backups
D. Generating a new， unique DBID for the duplicate database
E. Copying the online redo log files from the target database to the duplicate database
A. Configure backup optimization
B. Configure the channel to increase MAXOPENFILES
C. Configure the channel to increase the capacity with the RATE parameter
D. Configure the channel to adjust the tape buffer size with the BLKSIZE option
A. Testing the backup and recovery procedures
B. Testing the upgrade of an Oracle database to a new release
C. Testing the effect of an application changes on database performance
D. Continuously updating archive log files from the target database to support failover
Examine the CREATE DISKGROUP command used to create a disk group：
SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY
DISK ’ORCL： FRA3’ NAME misc1， ’ORCL： FRA4’ NAME misc2；
In which situation would you use this method of disk group creation？（）
A. When two-way disk mirroring is required for the allocation units
B. When three-way disk mirroring is required for the allocation units
C. When using hardware mirroring or RAID
D. When disk mirroring is required for the Automatic Storage Management （ASM） disks
最新试题
To enable faster incremental backups， you enabled block change tracking for the database. Which two statements are true about the block change tracking file？（）
The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement is true while performing a tape backup in an RMAN session？（）
View the Exhibit and examine the disk groups created at the time of migrating the database storage to Automatic Storage Management （ASM）. Why does the FRA disk group initially have more free space even though both DATA and FRA disk groups are provided with the same size？（）
What does the DB_FLASHBACK_RETENTION_TARGET parameter configure？（）
You want to enable automatic PGA memory management in your database. Which setting is required to achieve this？（）
Examine the following ALTER command： SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS； What is the purpose of the command？（）
Which two operations are NOT performed by the DUPLICATE command in Recovery Manager （RMAN） while duplicating a running database？（）
Which command creates an image copy？（）
Which two commands never trigger an implicit rebalancing within the disk group？（）
While Monitoring the space usage in your database that is in ARCHIVELOG mode you observed that the flash recovery area does not have enough free space to accommodate any more files and you do not have necessary permissions to add more space to it. Identify the two events that can occur in the event of a log switch？（）