多项选择题
A.mydb is a service name.
B.test.us.oracle.com is a database name.
C.1521 is the listener port number.
D.mydb is a host name.
E.test.us.oracle.com is a net service name.
F.hr is a username.
G.test.us.oracle.com is an instance name.
单项选择题 View the Exhibit to see the output of queries on DATABASEPROPERTIES and DBAUSERS. You observe that the current default permanent tablespace of the database is running out of space and you decide to change it to NEWDEFTBSP. You create a new user， USER04， after changing the default permanent tablespace of the database. What would be the new user’s default tablespace？（）
多项选择题 Identifythetwotablespaceswhosedatafilesaresocriticalthatonlyaclosedrecoveryispossible.（）
单项选择题 YouwanttosetuptheOracleDatabase10ginstallationtofollowtheFrenchlanguage，withFranceastheterritory，andthedatetobedisplayedinFrenchforallusers’sessions.Whichenvironmentalvariablewouldyousettoachievethisobjective？（）