单项选择题
A. Implement job classes
B. Implement Scheduler windows
C. Implement the mapping rule for the consumer groups
D. Set the SWITCH_TIME resource plan directive for both the resource plans
单项选择题 TheDB_BLOCK_CHECKINGinitializationparameterissettoOFF.Whichblockcheckingwouldbeperformed？（）
单项选择题 A database is running in ARCHIVELOG mode and regular backups are performed. A user receives the following error message： Which is the recommended sequence of operations you need to perform for the query successfully？（）
单项选择题 You are managing an ASM instance. You previously issued the following statements： ALTER DISKGROUP dg1 DROP DISK disk2； ALTER DISKGROUP dg1 DROP DISK disk3； ALTER DISKGROUP dg1 DROP DISK disk5； You want to cancel the disk drops that are pending for the DG1 disk group. Which statement should you issue？（）