OCP 11G認證考試單項選擇題每日一練(2019.01.10)

單項選擇題
What is the default value for the ENABLED attribute of a job or program when it is created? （）
A. TRUE
B. FALSE
C. There is no default. It must be defined at creation time.
D.PENDING
E. NULL
單項選擇題
Which of the following best describes a full backup? （）
A.All datafiles of a database
B.All datafiles, archive logs, and control files
C.All datafiles and control files
D.All the used blocks in a datafile
單項選擇題
View the Exhibit for the object interdependency diagram.How does this impact the status of the dependent objects?（）
A. All dependent objects remain valid.
B. Only the procedure and function become invalid and must be recompiled.
C. Only the view becomes invalid and gets automatically revalidated the next time it is used.
D. Only the procedure and function become invalid and get automatically revalidated the next time they are called.
單項選擇題
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
單項選擇題
View the Exhibit and note the contents of V$DIAG_INFO. Which statement is true about the ADR?（）
A. The text alert log file will be available in Diag Trace
B. A copy alert log file will be kept in Diag Incident for every incident.
C. The XML version of the alert log file will be available in Diag Trace.
D. An Automatic Database Diagnostic Management (ADDM) report is generated and stored in the Health Monitor whenever an incident occurs.