单项选择题

YourtestdatabaseisrunninginNOARCHIVELOGmode.Whichstatementistrueregardingthetypeofbackupsthatcanbeperformedonthedatabase（）

A.Youcanperformonlinewholedatabasebackups.
B.Youcanperformofflinewholedatabasebackups.
C.Youcannotperformschema-levelexport/importoperations.
D.YoucanperformthebackupofonlytheSYSTEMtablespacewhenthedatabaseisopen.

你可能感兴趣的试题

单项选择题

YouworkasadatabaseadministratoratCertkiller.com.YourproductiondatabaseusesanAutomaticStorageManagement（ASM）instancetomanageitsfiles.YouwanttoaddanewdiskgrouptotheASMinstancetomanagetheincreaseddataload.WhatactionwouldyouperformtoincludethenewdiskgroupintheASMinstancewithoutcausinganyimpactonthecurrentlyconnectedusers？（）
A.mountthenewdiskgroupintheASMinstance
B.restarttheASMinstanceandtheproductiondatabaseinstance
C.registerthenewdiskgroupsintheproductiondatabaseinstance
D.restarttheASMinstancewithoutrestartingtheproductiondatabaseinstance
E.includethenewdiskgroupintheASM_DISKSTRINGparameterintheparameterfileandrestarttheASMinstance

A.com.YourproductiondatabaseusesanAutomaticStorageManagement（ASM）instancetomanageitsfiles.YouwanttoaddanewdiskgrouptotheASMinstancetomanagetheincreaseddataload.WhatactionwouldyouperformtoincludethenewdiskgroupintheASMinstancewithoutcausinganyimpactonthecurrentlyconnectedusers？（）
A.mountthenewdiskgroupintheASMinstance
B.restarttheASMinstanceandtheproductiondatabaseinstance
C.registerthenewdiskgroupsintheproductiondatabaseinstance
D.restarttheASMinstancewithoutrestartingtheproductiondatabaseinstance
E.includethenewdiskgroupintheASM_DISKSTRINGparameterintheparameterfileandrestarttheASMinstance

单项选择题

Youarebuildingtwoforms.Eachformhasabuttonandanon-basetablefield.Whenthebuttonispressed,acomplicatedcalculationisexecuted.Thecalculationisthesameforbothforms.The calculationcodedoesnotqueryorchangethedatainthedatabase.Whenthecalculationcompletes,itreturnsasinglevaluetothenon-basetablefield.Tooptimizeperformanceandmaintainability,whichPL/SQLstructureshouldbeused?（）
A.Atriggerineachform.
B.Asubprogramineachform.
C.Astoredsubprograminthedatabase.
D.Asubprograminalibrarythatisattachedtoeachform.

A.Eachformhasabuttonandanon-basetablefield.Whenthebuttonispressed,acomplicatedcalculationisexecuted.Thecalculationisthesameforbothforms.The
B.Whenthecalculationcompletes,itreturnsasinglevaluetothenon-basetablefield.Tooptimizeperformanceandmaintainability,whichPL/SQLstructureshouldbeused?（）
A.Atriggerineachform.
C.Asubprogramineachform.
D.Astoredsubprograminthedatabase.
E.Asubprograminalibrarythatisattachedtoeachform.