YouworkasadatabaseadministratorforSupportcenter.cn.Youstartedtheinstanceusingthe
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.
正确答案：参考D
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