单项选择题
You perform a backup using the following BACKUP command:
RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE;
Which statement is true of this command?（）
A. A different procedure is required to restore a database from compressed backups
B. The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed backup sets and image copies.
C. Using this command to create backups minimizes the bandwidth consumed
D. Using this command to create backups improves the performance of the backup process
相关考题
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单项选择题
Evaluate the following block of code： BEGIN DBMS_NETWORK_ACL_ADMIN.CREATE_ACL （ acl => ’mycompany-com-permissions.xml’， principal => ’ACCT_MGR’， is_grant => TRUE， privilege => ’connect’）； DBMS_NETWORK_ACL_ADMIN.ASSIGN_ACL （ acl => ’mycompany-com-permissions.xml’， host => ’*.mycompany.com’）； END； What is the outcome of the above code？（）
A. It produces an error because a fully qualified host name needs to be specified.
B. It produces an error because the range of ports associated with the hosts has not been specified.
C. It creates an access control list （ACL） with the user ACCT_MGR who gets the CONNECT and RESOLVE privileges.
D. It creates an access control list （ACL） with the user ACCT_MGR who gets the CONNECT privilege but not the RESOLVE privilege. -
单项选择题
You issue the following command on the RMAN prompt. REPORT NEED BACKUP DAYS 5; Which statement is true about executing this command?（）
A. It will display a list of files that need incremental backup
B. It will display a list of files that need backup after five days
C. It will display a list of files that were backed up in the last five days
D. It will display a list of files that have not been backed up in the last five days
E. It will apply the current retention policy to determine the files that need to be backed up
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单项选择题
You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy: CONFIGURE RETENTION POLICY TO REDUNDANCY 3; Which statement is true?（）
A. The command fails because you cannot configure a redundancy-based retention policy when backup optimization is enabled
B. Backup optimization is performed, but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed up
C. Backup optimization is permanently disabled
D. Backup optimization is temporarily disabled because a redundancy-based retention policy is specified
