单项选择题

Thesystemanalystshaverequestedheavyuseofobjectfeatures.ThedatabasedesignmakesuseofPL／SQL8objecttypes,methods,andLOBtypes.Howdoyouworkwiththesefeaturesontheclient?（）

A.Writeclient-sidesubprogramscontainingthePL/SQL8constructs,andmovethemintoanobjectgroup.
B.Writeserver-sidesubprograms,andcallthesubprogramsfromtheformapplication.
C.StorethePL/SQL8constructsinaPL/SQLlibrary,andattackthelibrarytoeachformmuddleinyourapplication.

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Given：fooandbararepublicreferencesavailabletomanyotherthreads.fooreferstoaThreadandbarisanObject.Thethreadfooiscurrentlyexecutingbar.wait（）.Fromanotherthread，whatprovidesthemostreliablewaytoensurethatfoowillstopexecutingwait（）？
A.foo.notify（）；
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D.Thread.notify（）；
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A.fooreferstoaThreadandbarisanObject.Thethreadfooiscurrentlyexecutingbar.wait（）.Fromanotherthread，whatprovidesthemostreliablewaytoensurethatfoowillstopexecutingwait（）？
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YourbossatCertkiller.comwantsyoutoclarifyOracle10g.Whichconditioninyourdatabaseforcesyoutoperformonlyconsistentbackups？（）

A.Thedatabaseisinmountstate.
B.Oneofthetablespacesisoffline.
C.Oneofthetablespacesisreadonly.
D.ThedatabaseoperatesinARCHIEVELOGmode.
E.ThedatabaseoperatesinNOARCHIEVELOGmode.