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单项选择题

YouworkasadatabaseadministratorforSupportcenter.cn.Youstartedtheinstanceusingtheinit.orafile.Youhavetwocontrolfilesandthreeredologgroupsinyourdatabase.Youdecidedtoprotectthedatabaseagainstfailuresbyaddingonemorecontrolfile.Whichfileistheappropriatewaytoperformthistask?()
A.Shutdowntheinstance,copythecontrolfiletothethirdlocationandopenthedatabase.
B.Aborttheinstance,copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterintheinit.orafileandopenthedatabase.
C.Copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterintheinit.orafile,restarttheinstanceandopenthedatabase.
D.Shutdowntheinstance,copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterintheinit.orafileandopenthedatabase.
E.Shutdowntheinstance,startupinthemountstate,copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterininit.oraandopenthedatabase.

    A.cn.Youstartedtheinstanceusingtheinit.orafile.Youhavetwocontrolfilesandthreeredologgroupsinyourdatabase.Youdecidedtoprotectthedatabaseagainstfailuresbyaddingonemorecontrolfile.Whichfileistheappropriatewaytoperformthistask?()
    A.Shutdowntheinstance,copythecontrolfiletothethirdlocationandopenthedatabase.
    B.Aborttheinstance,copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterintheinit.orafileandopenthedatabase.
    C.Copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterintheinit.orafile,restarttheinstanceandopenthedatabase.
    D.Shutdowntheinstance,copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterintheinit.orafileandopenthedatabase.
    E.Shutdowntheinstance,startupinthemountstate,copythecontrolfiletothethirdlocation,modifytheCONTROL_FILESparameterininit.oraandopenthedatabase.
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