单项选择题
A. It forces BasicFiles to be created even if the SECUREFILE option is specified to create the LOB
B. It forces SecureFiles to be created even if the BASICFILE option is specified to create the LOB
C. It does not allow the creation of SecureFiles and generates an error if the SECUREFILE option is specified to create the LOB
D. It ignores the SECUREFILE option only if a Manual Segment Space Management tablespace is used and creates a BasicFile
单项选择题 You work with a newly created database. Presently, there is no application load on the database instance.You want to create a baseline for tuning the application, so you decide to collect recommendations that can be implemented to improve application performance.What action must you take to achieve this?（）
单项选择题 You issued the following commands to configure setting in RMAN; RMAN> CONFIGURE DEVICE TYPE sbt PARALLELISM 1; RMAN> CONFIGURE DEFAULT DEVICE TYPE TO sbt; RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE sbt TO 2; RMAN> CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE sbt TO 2; RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2; Then you issued the following command to take the backup: RMAN> BACKUP DATABASE PLUS ARCHIVELOG; Which statement is true about the execution of the above command?（）
单项选择题 You need to maintain a record of all transactions on some tables for at least three years. Automatic undo management is enabled for the database. What must you do accomplish this task?（）