Only the data files.
Only the data files and the online logs.
The data files, control files, and the online logs.
The data files and control files, but not the online logs.
第1题:
Your database runs in NOARCHIVELOG mode, and is backed up every night using RMAN scripts. However, last night your assistant DBA performed a manual operating system backup, instead of running the scripts. Today your database crashed and you now want to use the backups from last night. What do you need todo?()
第2题:
You want to perform the database backup when user activity on your system is low, such as between 12:00 a.m. and 2:00 am. Which command terminates with an error if the backup is not complete at the end of the specified duration?()
第3题:
You performed an incremental level 0 backup of a database:RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE;To enable block change tracking after the incremental level 0 backup, you issued this command:SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’;To perform an incremental level 1 cumulative backup, you issued this command:RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;Which three statements are true?()
A. Backup change tracking will sometimes reduce I/O performed during cumulative incremental backups.
B. The change tracking file must always be backed up when you perform a full database backup.
C. Block change tracking will always reduce I/O performed during cumulative incremental backups.
D. More than one database block may be read by an incremental backup for a change made to a single block.
E. The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.
第4题:
It is a holiday and no transactions are being performed on the database. You took a consistent backup of your database without using Recovery Manager (RMAN). How would you make use of this consistent backup in RMAN?()
第5题:
Your database is functioning in NOARCHIVELOG mode. Your database contains 15 tablespaces. You want to use Recovery Manager (RMAN) to perform backups. Which two backups would you be able to perform when the database is being accessed by users?()
第6题:
Your PROD database has been started using the server parameter file. In your PROD database you are using RMAN for backup and recovery operations. You issue the following commands from the RMAN prompt: RMAN> CONFIGURE CONTROLFILE AUTOBACKUP OFF; RMAN> BACKUP DATABASE; Which files from the database will be backed up as a result of this BACKUP command?()
第7题:
You are using RMAN to perform a closed database backup of your database. You issue these RMAN commands: STARTUP MOUNT; BACKUP FORMAT ’/BACKUP/df_%d_%s_%p.bus’ DATABASE filesperset = 2; Which components are included in the backup?()
第8题:
You work as a database administrator for Supportcenter.cn. You are using Recovery Manager (RMAN) to perform backups in your databases. Which four backup operations can be performed using RMAN?()
第9题:
Examine the following command used to perform incremental level 0 backup: RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE; To enable the block change tracking, after the incremental level 0 backup you issued the following command: SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ’/mydir/ rman_change_track.f’;To perform incremental level 1 cumulative backup, you issued the following command: RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which two statements are true in the above situation?()
第10题:
In your database, all the tablespaces are locally managed. You started Recovery Manager (RMAN) using recovery catalog and restored the control file by using the following command: RMAN> RESTORE CONTROLFILE; Which two operations do you need to perform after restoring the control file from backup?()