单选题Using Oracle Scheduler you have scheduled two jobs， JOB_A and 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 windows group must have been created with the WEEKEND_PLAN resource plan.
单选题
Using Oracle Scheduler you have scheduled two jobs， JOB_A and 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 windows group must have been created with the WEEKEND_PLAN resource plan.
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