单项选择题
A. executing the SET PASSWORD command and then the SAVE_CONFIG command
B. executing the CHANGE_PASSWORD command and then the SAVE_CONFIG command
C. executing the CHANGE_PASSWORD command and then the SET PASSWORD command
D. executing the SET PASSWORD command， then the CHANGE_PASSWORD command and finally， the SAVE_CONFIG command
单项选择题 Thelistenerhasshutdownunexpectedly.Youwanttoviewthelistenerlogfileandlistenertracefiletofindthecauseoftheproblem.Howcanyouviewthecontentsofthelistenerlogfileandthelistenertracefile？（）
单项选择题 You are maintaining the database of a company. The listener process， listener1， is configured for remote access. You have issued the following command： LSNRCTL>STATUS listener1 Which information will NOT be displayed when you issue the above command？（）
多项选择题 YouarerequiredtoremovethedefaultEXTPROCentryfromthedefaultlistenerconfigurationtocreatealistenerthatwilllistenspecificallyforEXTPROCcalls.WhichtwomethodscanyouusetoremovethedefaultEXTPROCentryfromthedefaultlistenerconfiguration？（）