单项选择题
A. FREQ = MONTHLY； BYMONTHDAY = 31
B. FREQ = MONTHLY； BYMONTHDAY = -1
C. FREQ = DAILY； BYDAY = -1
D. FREQ = MONTHLY； BYDAY = 31
E. FREQ = DAILY； BYMONTHDAY = LAST_DAY
单项选择题 Consider the following code snippet： BEGIN DBMS_SCHEDULER.SET_ATTRIBUTE （ name => ，，lne_job1， attribute => ，，job_priority， value => 1）； END； / If this code were executed， which of the following statements would be true？（）
多项选择题 Tosetthehistoryretentionperiodforeitherwindowloggingorjobloggingindividually，whichparametersoftheSET_SCHEDULER_ATTRIBUTEprocedureneedtobeused？（）
单项选择题 WhatisthedefaultvaluefortheENABLEDattributeofajoborprogramwhenitiscreated？（）