A.adding a new user to the databaseB.dropping a user fr……

多项选择题Auserwantstoconnecttothedatabaseinstancefromanapplicationthatisrunningonaremotemachine.WhichtoolsshouldtheDBAusetoestablishtherequiredconfigurationtoensurethattheuserisabletoconnecttothedatabaseinstance？（）

A.Data Pump
B.Oracle Net Manager
C.Oracle Enterprise Manager
D.Oracle Universal Installer （OUI）
E.Database Configuration Assistant （DBCA）

单项选择题YoudefineanalerttoberaisedwhentheUSERStablespaceusagehasreached80%ofthetotalspace.Whichareawouldyoureferto，inordertoconfirmthatthealerthasbeenraisedduetheevent？（）

A.the alert.log file
B.the DBA_ALERTS view
C.the Database Control Home page
D.the Database Control performance page
E.the Database Control Maintenance page

多项选择题YourequiretheOracleservertomanagetheundosegmentsandspaceamongvariousactivesessionsautomatically.Youcreatedanundotablespace，UNDO_TBS1，inyourdatabase.Whichtwoadditionalstepswouldyouperformtoachievethis？（）

A.Set the UNDO_RETENTION parameter to 900 or more.
B.Create an initial undo segment in the undo tablespace.
C.Enable the retention guarantee for the undo tablespace.
D.Set the UNDO_TABLESPACE parameter to UNDO_TBS1.
E.Set the UNDO_MANAGEMENT initialization parameter to AUTO.

单项选择题WhatistheimplicationofsettingtheinitializationparameterFAST_START_MTTR_TARGETto0inyourdatabase？（）

A.MTTR Advisor would be disabled.
B.Redo Log Advisor would be disabled.
C.Automatic tuning of checkpoint would be disabled.
D.Checkpoint information would not be written to the alert log file.

单项选择题YouhavetoshutdownthedatabaseinstancewiththeABORToptionbecauseofahardwarefailure.Whichstatementistrueaboutthesubsequentopeningofthedatabase？（）

A.The database would open normally.
B.The database would not open， and it would stop at mount stage.
C.The database would open after automatically performing instance recovery.
D.The database would not open， and you have to perform database recovery to open it.