未知题型
YouaretheDatabaseAdministrator（DBA）ofyourcompany.YouexecutethefollowingstatementonanOracle10ginstance：SQL>ALTERSYSTEMSWITCHLOGFILE；Whichtwotasksareperformedwhenthestatementisexecuted？（）
- A.TheDBWnprocesswritestothedatafile.
B.Changesinthebackgroundprocessarerecorded.
C.ThelogfileisupdatedwiththecurrentSCNnumber.
D.TheSystemChangeNumber（SCN）isrecordedinthecontrolfile.
E.Thechangestothelistenerconfigurationinthelistener.orafilearerecorded.
A, D
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未知题型
WhichtwostatementsaretrueabouttherolesintheOracledatabase？（）
A.Arolecanbegrantedtoitself.
B.RolesareownedbytheSYSuser.
C.Rolescanbegrantedtootherroles.
D.Arolecannotbeassignedexternalauthentication.
E.Arolecancontainbothsystemandobjectprivileges. -
未知题型
InwhichsituationswilltheASMmetadatabackuphelpyourecovertheASMdiskinadiskgroup？（）
A.whenoneormorefiledirectorypathsareaccidentallydeletedfromanASMdiskgroup
B.whenoneofthedisksinadiskgroupisaccidentalyunplugged
C.whenthedatafileonanASMdiskgroupgetscorrupted
D.whenoneormoredisksinanASMdiskgrouparelost -
未知题型
Thecurrenttimezoneforoneoftheusersessionsissettothedatabaselocaltimezone.Foroneapplication，theusersessionrequiresthetimezonetobesettothelocaloperatingsystemtimezonewithoutaffectingotherusersessions.Whichtwosolutionscouldtheuserimplementtoachievethisobjective？（）A.usetheALTERSYSTEMcommandtochangethetimezoneB.usetheALTERSESSIONcommandtochangethetimezoneC.usetheALTERDATABASEcommandtochangethetimezoneD.setthevaluefortheoperatingsystemvariableORA_SDTZontheclientmachineE.setthevaluefortheoperatingsystemvariableORA_SDTZonthedatabaseservermachine
A.Foroneapplication，theusersessionrequiresthetimezonetobesettothelocaloperatingsystemtimezonewithoutaffectingotherusersessions.Whichtwosolutionscouldtheuserimplementtoachievethisobjective？（）
A.usetheALTERSYSTEMcommandtochangethetimezone
B.usetheALTERSESSIONcommandtochangethetimezone
C.usetheALTERDATABASEcommandtochangethetimezone
D.setthevaluefortheoperatingsystemvariableORA_SDTZontheclientmachine
E.setthevaluefortheoperatingsystemvariableORA_SDTZonthedatabaseservermachine
