单项选择题
A. whether the password is set in the listener or a file or not
B. the number of client connections the service handler has refused
C. the information will be displayed whether the instance can accept connections or not
D. the protocol addresses on which the listener is configured to listen
多项选择题 YouarerequiredtoremovethedefaultEXTPROCentryfromthedefaultlistenerconfigurationtocreatealistenerthatwilllistenspecificallyforEXTPROCcalls.WhichtwomethodscanyouusetoremovethedefaultEXTPROCentryfromthedefaultlistenerconfiguration？（）
单项选择题 You executed the following procedure to collect statistics regarding an index： SQL>ANALYZE INDEX EMP_ID VALIDATE STRUCTURE； Which view will you use to determine whether you need to rebuild the index or not？（）
单项选择题 Theonlineredologgroupconfigurationforyourdatabaseisasfollows：Whatwillhappeniftheonlineredologfile’ora02/oradata/redo02b.log’iscorruptedwhileworkingonthedatabase？（）