單項選擇題

On Tuesday， a junior DBA dropped an important application user account， whose schema has important tables. You are asked to recover all the objects in the schema. On investigation， you find that the user account was dropped at 11：00 a.m. and Sunday’s backup is the most recent backup.Which flashback feature would you use？（）

A. Flashback Drop
B. Flashback Table
C. Flashback Database
D. Flashback Version Query
E. Flashback Transaction Query

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單項選擇題
Your database is running on the automatic Program Global Area （PGA） memory management and Shared Memory Management mode. You want to increase the memory available for the SQL work areas. What would you do？（）
A. modify the HASH_AREA_SIZE initialization parameter
B. modify the PGA_AGGREGATE_TARGET initialization parameter
C. modify the WORK_AREASIZE_POLICY initialization parameter
D. increase the value of the SGA_TARGET initialization parameter
E. increase the value of the SGA_MAX_SIZE initialization parameter
F. increase the value of the SORT_AREA_SIZE initialization parameter
單項選擇題
Using Oracle Scheduler you have scheduled two jobs， JOB_Aand JOB_B， to run at 9：00 p.m. every Friday. You want both the jobs to use a single resource plan， WEEKEND_PLAN. Which task must have already been performed to enable you to achieve this objective？（）
A. A window must have been created with the WEEKEND_PLAN resource plan.
B. A program must have been created with the WEEKEND_PLAN resource plan.
C. A job class must have been created with the WEEKEND_PLAN resource plan.
D. A window group must have been created with the WEEKEND_PLAN resource plan.