1Z0-053
单选题You are working on a 24X7 database. You want to design a backup strategy for your database that uses user managed backups. You want to be able to perform all backups while the database remains online. Which statement about performing user-managed backu
题目
You must have change tracking enabled in your database
Your database must be running in NOARCHIVELOG mode
To back up a tablespace, it must be in backup mode
To back up a tablespace, it must first be taken offline
相似问题和答案
第1题：
You are working on a 24X7 database. You want to design a backup strategy for your database that uses user managed backups. You want to be able to perform all backups while the database remains online. Which statement about performing user-managed backups in a 24x7 environment is true?（）
- A、You must have change tracking enabled in your database
- B、Your database must be running in NOARCHIVELOG mode
- C、To back up a tablespace, it must be in backup mode
- D、To back up a tablespace, it must first be taken offline
正确答案:C
第2题：
Your database is running in ARCHIVELOG mode. You are performing a user-managed backup of the DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement： ALTER TABLESPACE data1 BEGIN BACKUP； While you are performing the backup， an error occurs that causes the instance to terminate abnormally. Which statement about the DATA1 tablespace is true？（）
- A、 The DATA1 tablespace is automatically taken out of backup mode when the instance aborts.
- B、 If you restart the database，the DATA1 tablespace will be automatically taken out of backup mode when the database is opened.
- C、 If you restart the database，the DATA1 tablespace will be automatically taken out of backup mode when the database is mounted.
- D、 If you restart the database，the database will not be opened.
正确答案:D
第3题：
You want to back up your 100-GB database on a remote tape device. You are required to ensure that minimum network bandwidth is consumed while transferring the backups to the tape device. The current consumption of your CPU is approximately 40 percent.Which type of backup should you perform?（）
A. standard backup set
B. image copy
C. compressed backup
D. user-managed backup
第4题：
You are working on a database that must be functioning 24 hours a day， 7 days a week. The databaseis configured in ARCHIVELOG mode. Which two options do you have for performing user-managed backups（）
- A、You can perform consistent backups only.
- B、You can perform a complete database backup without shutting down the database instance.
- C、You can back up data files only when all data files have the same SCN recorded in the control file.
- D、You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGINBACKUP or ALTER DATABASE BEGIN BACKUP commands.
正确答案:B,D
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？（）
- A、backup of offline tablespaces
- B、backup of readonly tablespaces
- C、backup of systemcritical tablespaces
- D、backup of online， locally managed tablespaces
- E、backup of read/write dictionarymanaged tablespaces
正确答案:A,B
第6题：
You are using a recovery catalog to maintain Recovery Manager （RMAN） backup information for your production database. You have registered your production database and are performing regular backups. Because of a new requirement you have added a few new tablespaces to your production database and you want them to be included in backups. Identify two options for completing this task.（）
- A、 Reregistering the target database in recovery catalog
- B、 Transporting the new tablespaces to the recovery catalog database
- C、 Syncronizing the recovery catalog with the target database control file
- D、 Performing a fresh backup of the target database to include the new data files in the catalog database
正确答案:C,D
第7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？（）
- A、 Backup of offline tablespaces.
- B、 Backup of read-only tablespaces.
- C、 Backup of system-critical tablespaces.
- D、 Backup of online， locally managed tablespaces.
- E、 Backup of read/write dictionary-managed tablespaces.
正确答案:A,B
第8题：
You are working on a 24X7 database. You want to design a backup strategy for your database that uses user managed backups. You want to be able to perform all backups while the database remains online. Which statement about performing user-managed backups in a 24x7 environment is true？（）
- A、 You must have change tracking enabled in your database
- B、 Your database must be running in NOARCHIVELOG mode
- C、 To back up a tablespace，it must be in backup mode
- D、 To back up a tablespace，it must first be taken offline
正确答案:C
第9题：
You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation？（）
- A、 The backup as copy can only be taken to disk
- B、 The backup as copy can only be taken to tape
- C、 Backup can be performed only when the instance is shutdown
- D、 Backup will constitute all used and unused blocks in the database
正确答案:A,D
第10题：
You are managing a 24*7 database. The backup strategy for the database is to perform user-managed backups. Identify two prerequisites to perform the backups.（）
- A、The database must be opened in restricted mode.
- B、The database must be configured to run in ARCHIVELOG mode.
- C、The tablespaces are required to be in backup mode before taking the backup.
- D、The tablespaces are required to be in read-only mode before taking the backup
正确答案:B,C