在身份认证协议中，下列哪一项可以使用口令认证协议、挑战握手协议和可扩展认证协议三种标准认证机

A. Reduced logical I/O

B. Reduced virtual memory utilization

C. Improved parallel Execution performance

D. Improved Serial Execution performance

E. Reduced physical I/O

F. Reduced CPU utilization

leusingOracleEnterpriseManager10gDatabaseControl，youfindthestatusofthejobasfailed.Onfurtherinvestigation，youfindthefollowingerrormessageintheoutputlog：ORA-01653unabletoextendtableHR.CertkillerSTAFFby8intablespaceUSERSWhichtaskwouldyouperformtoloadthedatasuccessfullywithoutaffectingtheuserswhoareaccessingthetable？（）

A.Restartthedatabaseinstanceandrunthejob

B.TruncatetheCertkillerSTAFFtableandrunthejob

C.DeleteallrowsfromtheCertkillerSTAFFtableandrunthejob

D.IncreasethesizeoftheUSERStablespacetheandrunthejob

E.Increasethesizeofthedatabasedefaultpermanenttablespaceandrunthejob

，theusersessionrequiresthetimezonetobesettothelocaloperatingsystemtimezonewithoutaffectingotherusersessions.Whichtwosolutionscouldtheuserimplementtoachievethisobjective？（）

A.usetheALTERSYSTEMcommandtochangethetimezone

B.usetheALTERSESSIONcommandtochangethetimezone

C.usetheALTERDATABASEcommandtochangethetimezone

D.setthevaluefortheoperatingsystemvariableORA_SDTZontheclientmachine

E.setthevaluefortheoperatingsystemvariableORA_SDTZonthedatabaseservermachine

A.ThesourcePL/SQLcodewillbestoredinnativemachinecode.

B.ThesourcePL/SQLcodewillbestoredininterpretedbytecode.

C.ThecompiledPL/SQLcodewillbestoredinnativemachinecode.

D.ThecompiledPL/SQLcodewillbestoredininterpretedbytecode.

ARCHIVELOG mode. You find that the SYSAUX tablespace is corrupted in the root container.The steps to recover the tablespace are as follows:1. Mount the CDB.2. Close all the PDBs.3. Open the database.4. Apply the archive redo logs.5. Restore the data file.6. Take the SYSAUX tablespace offline.7. Place the SYSAUX tablespace online.8. Open all the PDBs with RESETLOGS.9. Open the database with RESETLOGS.10. Execute the command SHUTDOWN ABORT.Which option identifies the correct sequence to recover the SYSAUX tablespace?（）

A.6，5，4，7

B.10，1，2，5，8

C.10，1，2，5，4，9，8

D.10，1，5，8，10

A.ThemembersofLOW_GROUPwouldgetmoreprioritythanthoseofOTHER_GROUPS.

B.ThemembersofSYS_GROUPwouldgetmostoftheCPUallocationatlevel1.

C.ThemembersofLOW_GROUPwouldgetmostoftheCPUallocationbecauseithasCPUallocationattwodifferentlevels.

D.ThemembersofLOW_GROUPwouldgetnoCPUallocationatlevel1ifthemembersofOTHER_GROUPSareusingalltheCPUatlevel2.

E.ThemembersofSYS_GROUPwouldgetnoCPUallocationatlevel1ifthemembersofOTHER_GROUPSareusingalltheCPUatlevel2.

YouworkasadatabaseadministratorforCertkiller.com.OnaMondaymorning，youfindthedatabaseinstanceaborted.Afterinspectingthealertlogfile，youexecutetheSTARTUPcommandinSQL*Plustobringtheinstanceup.Whatstatementistrue？（）

A.PMONcoordinatesmediarecovery.

B.SMONcoordinatesinstancerecovery.

C.PMONcoordinatesinstancerecovery.

D.UndoAdvisorwouldrollbackalluncommittedtransactions.

E.SQL*PLUSreportsanerrorwiththemessageaskingyoutoperforminstancerecovery.

A. Oracle Data Pump

B. Oracle Recovery Manager (RMAN)

C. Oracle Label Security

D. Oracle Database Vault

E. Oracle Real Application Security

A.A

B.B

C.C

D.D

able databases, HR_PDB and ACCOUNTS_PDB. An RMAN backup exists for the database.You issue the command to open ACCOUNTS_PDB and find that the USERDATA.DBF data file for the default permanent tablespace USERDATA belonging to ACCOUNTS_PDB is corrupted.What should you do before executing the commands to restore and recover the data file in ACCOUNTS_PDB?（）

A. Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDb.

B. Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE IMMEDIATE command.

C. Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.

D. Take the USERDATA tablespace offline in ACCOUNTS_PDb.