单项选择题
A. Run Segment Advisor
B. Run the SQL Tuning Advisor (STA)
C. Run the Automatic Workload Repository (AWR) report
D. Run the SQL Access Advisor with a hypothetical workload
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?（）
单项选择题 Your database is running in ARCHIVELOG mode， and the database is open. You execute an RMAN backup and specify the KEEP clause. Which components are backed up when this option is specified？（）