单项选择题
A. Flashback Drop
B. Flashback Table
C. Flashback Database
D. Flashback Version Query
E. Flashback Transaction Query
单项选择题 YourdatabaseisrunningontheautomaticProgramGlobalArea（PGA）memorymanagementandSharedMemoryManagementmode.YouwanttoincreasethememoryavailablefortheSQLworkareas.Whatwouldyoudo？（）
单项选择题 UsingOracleScheduleryouhavescheduledtwojobs，JOB_AandJOB_B，torunat9：00p.m.everyFriday.Youwantboththejobstouseasingleresourceplan，WEEKEND_PLAN.Whichtaskmusthavealreadybeenperformedtoenableyoutoachievethisobjective？（）
单项选择题 You decided to change the location of the flash recovery area. You executed the following command： ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’+disk1’ SCOPE=BOTH SID=’*’； Which statement is true？（）