单项选择题 You executed the following code：   BEGIN   DBMS_SCHEDULER.SET_ATTRIBUTE  （  NAME => ’JOB_A’，   ATTRIBUTE => ’JOB_PRIORITY’，   VALUE => 7）；   END；  /   After analyzing the above code， what conclusion will you draw？（）

单项选择题 Williamiscreatingajobclass.WilliamspecifiestheLOGGING_FULLsettingfortheLOGGING_LEVELattributeatthetimeofjobclasscreation.Whatistheimpactofusingthissetting？（）

单项选择题 You are creating a job class. You have issued the following command to create the job class：  SQL> BEGIN   DBMS_SCHEDULER.CREATE_JOB_CLASS（        JOB_CLASS_NAME => ’LOW_PRIORITY_CLASS’，        RESOURCE_CONSUMER_GROUP => ’LOW_GROUP’，        LOGGING_LEVEL => DBMS_SCHEDULER.LOGGING_FULL，        LOG_HISTORY => 1200，   COMMENTS => ’LOW JOB PRIORITY CLASS’）；        END；        SQL> /   What will be the result of the above command？（）