ASM中OCR所在磁盘组损坏后该怎么恢复，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。

HowtorestoreASMbasedOCRaftercompletelossoftheCRSdiskgrouponLinux/Unixsystems[ID1062983.1]当OCR存于ASM且损坏时，不能直接恢复；因为ocrconfig-restore需要ASM处于运行状态才能执行成功，而OCR丢失又导致ASM无法启动，由此产生了悖论；对于11202，可采用如下方法应对：背景WhenusinganASMdiskgroupforCRStherearetypically3differenttypesoffileslocatedinthediskgroupthatpotentiallyneedtoberestored/recreated:theOracleClusterRegistryfile(OCR)theVotingfile(s)thesharedSPFILEfortheASMinstancesThefollowingexampleassumesthattheOCRwaslocatedinasinglediskgroupusedexclusivelyforCRS.Thediskgrouphasjustonediskusingexternalredundancy.SincetheCRSdiskgrouphasbeenlosttheCRSstackwillnotbeavailableonanynode.如果将OCR恢复到新的磁盘组，还应修改/etc/oracle/ocr.loc文件ThisdocumentassumesthatthenameoftheOCRdiskgroupremainsunchanged,howevertheremaybeaneedtouseadifferentdiskgroupname,inwhichcasethenameoftheOCRdiskgroupwouldhavetobemodifiedin/etc/oracle/ocr.locacrossallnodespriortoexecutingthefollowingsteps.首先确定OCR存有备份，在跳过CRS的前提下启动clusterware，先后恢复OCR/votingdiskOCR自动备份集可位于集群中任一节点，应逐个查找[oracle@justin~]$ocrconfig-showbackup

justin2013/05/1604:43:30/orasw/app/11.2.0.3/grid/cdata/backup00.ocr

justin2013/05/1600:43:29/orasw/app/11.2.0.3/grid/cdata/backup01.ocr

justin2013/05/1520:43:29/orasw/app/11.2.0.3/grid/cdata/backup02.ocr

justin2013/05/1408:43:26/orasw/app/11.2.0.3/grid/cdata/day.ocr

justin2013/05/0222:14:05/orasw/app/11.2.0.3/grid/cdata/week.ocr

关闭所有GI服务#$CRS_HOME/bin/crsctlstopcrs-f跳过CRS以排他方式启动GI#$CRS_HOME/bin/crsctlstartcrs-excl-nocrsCRS-4123:OracleHighAvailabilityServiceshasbeenstarted....CRS-2672:Attemptingtostart'ora.cluster_interconnect.haip'on'auw2k3'CRS-2672:Attemptingtostart'ora.ctssd'on'racnode1'CRS-2676:Startof'ora.drivers.acfs'on'racnode1'succeededCRS-2676:Startof'ora.ctssd'on'racnode1'succeededCRS-2676:Startof'ora.cluster_interconnect.haip'on'racnode1'succeededCRS-2672:Attemptingtostart'ora.asm'on'racnode1'CRS-2676:Startof'ora.asm'on'racnode1'succeeded登陆ASM创建丢失的磁盘组，然后导入最新OCR备份SQL>creatediskgroupCRSexternalredundancydisk'ORCL:ASMD40'attribute'COMPATIBLE.ASM'='11.2';Diskgroupcreated.#cd$CRS_HOME/cdata/rac_cluster1/#$CRS_HOME/bin/ocrconfig-restorebackup00.ocr重建votingdisk#$CRS_HOME/bin/crsctlreplacevotedisk+CRSSuccessfuladditionofvotingdisk00caa5b9c0f54f3abf5bd2a2609f09a9.Successfullyreplacedvotingdiskgroupwith+CRS.CRS-4266:Votingfile(s)successfullyreplaced关闭并重启CRS#$CRS_HOME/bin/crsctlstopcrs-f...CRS-2793:ShutdownofOracleHighAvailabilityServices-managedresourceson'auw2k3'hascompletedCRS-4133:OracleHighAvailabilityServiceshasbeenstopped.#$CRS_HOME/bin/crsctlstartcrsCRS-4123:OracleHighAvailabilityServiceshasbeenstarted.

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