单项选择题
A.The listener process named L1 will disconnect the unauthorized users.
B.The listener process named L1 will be prevented from being started by unauthorized users.
C.The listener process named L1 will be prevented from being stopped by unauthorized users.
D.The listener process named L1 will be prevented from being reloaded by unauthorized users.
E.The listener process named L1 will be prevented from accepting connections from unauthorized users.
多项选择题 While creating a scheduler window using the DBMS_SCHEDULER package， a user logged in as DBMGR gets the error message insufficient privileges. Which two commands would you use to resolve this error？（）
单项选择题 In your production database there is a job， CALC_STAT， which has been scheduled to run every Friday at 5：00 p.m. CALC_STAT updates the optimizer statistics for the objects owned by the APPS schema. You want the task to be generic， thereby allowing users to modify the attributes of the task at run time without affecting the original task. Which component of Oracle Scheduler must you define to achieve this？（）
单项选择题 Your business has departmental reports that are generated every day. Each department must use the same set of queries， but accesses a different subset of data in the tables， depending on which department generates the report. The format of the reports is being developed currently， the format changes daily. How would you configure the database to ensure that each department generates its report （based on its target data） using the most recent report format every day？（）