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Oracle11gRACASM磁盘全部丢失后的恢复

时间:2021-07-01 10:21:17 帮助过:57人阅读

Oracle 11g RAC ASM磁盘全部丢失后的恢复,Oracle 11.2.0.3 RAC ON Oracle Linux 6 x86_64,只有一个ASM外部冗余磁盘组mdash;m

一、环境描述

(1)Oracle 11.2.0.3 RAC ON Oracle Linux 6 x86_64,只有一个ASM外部冗余磁盘组——DATA;
(2)OCR,VOTEDISK,DATAFILE,CONTROLFILE,SPFILE全部位于这个磁盘组上;

二、故障描述

(1)存储故障导致ASM磁盘丢失。
(2)CRS因为OCR和VOTEDISK的丢失,除了OHAS还联机外,CLUSTERWARE服务都已经停止。

三、备份情况


(1)RMAN备份:包括controlfile,,database,spfile,archivelog,
(2)OCR备份:没有进行过人工备份,在$CRS_HOME/cdata目录下有CRS自动备份文件。

四、操作步骤

说明:准使用CRS自动备份的文件恢复OCR,使用RMAN备份来恢复数据库;准备恢复数据的同时,调整ASM磁盘组,将OCR,VOTEDISK同数据库文件分开存放。

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4.1 恢复OCR和VOTEDISK

(1) 在所有RAC节点上停止CRS服务

[root@rac1 ~]# crsctl stop has -f CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac1' CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac1' CRS-2673: Attempting to stop 'ora.crf' on 'rac1' CRS-2677: Stop of 'ora.mdnsd' on 'rac1' succeeded CRS-2677: Stop of 'ora.crf' on 'rac1' succeeded CRS-2673: Attempting to stop 'ora.gipcd' on 'rac1' CRS-2677: Stop of 'ora.gipcd' on 'rac1' succeeded CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac1' CRS-2677: Stop of 'ora.gpnpd' on 'rac1' succeeded CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac1' has completed CRS-4133: Oracle High Availability Services has been stopped.

[root@rac2 ~]# crsctl stop has -f CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac2' CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac2' CRS-2673: Attempting to stop 'ora.crf' on 'rac2' CRS-2677: Stop of 'ora.mdnsd' on 'rac2' succeeded CRS-2677: Stop of 'ora.crf' on 'rac2' succeeded CRS-2673: Attempting to stop 'ora.gipcd' on 'rac2' CRS-2677: Stop of 'ora.gipcd' on 'rac2' succeeded CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac2' CRS-2677: Stop of 'ora.gpnpd' on 'rac2' succeeded CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac2' has completed CRS-4133: Oracle High Availability Services has been stopped.

(2) 在一个节点上以NOCRS方式启动CRS,此操作会启动ASM实例。

[root@rac1 ~]# crsctl start crs -excl -nocrs CRS-4123: Oracle High Availability Services has been started. CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1' CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1' CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1' CRS-2672: Attempting to start 'ora.gipcd' on 'rac1' CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded CRS-2672: Attempting to start 'ora.cssd' on 'rac1' CRS-2672: Attempting to start 'ora.diskmon' on 'rac1' CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded CRS-2679: Attempting to clean 'ora.cluster_interconnect.haip' on 'rac1' CRS-2672: Attempting to start 'ora.ctssd' on 'rac1' CRS-2681: Clean of 'ora.cluster_interconnect.haip' on 'rac1' succeeded CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'rac1' CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'rac1' succeeded CRS-2672: Attempting to start 'ora.asm' on 'rac1' CRS-2676: Start of 'ora.asm' on 'rac1' succeeded

(3) 新添加了三块磁盘,已经使用UDEV进行了绑定,查看磁盘状态。

[root@rac1 ~]# su - grid [grid@rac1 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.3.0 Production on Fri Jul 5 17:41:49 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options SQL> select group_number group#, disk_number disk#, OS_MB, state, path, header_status from v$asm_disk order by 1,2; GROUP# DISK# OS_MB STATE PATH HEADER_STATUS ---------- ---------- ---------- ---------- -------------------- ---------------------- 0 0 1024 NORMAL /dev/asm-diskc CANDIDATE 0 1 5120 NORMAL /dev/asm-diskd CANDIDATE 0 2 20480 NORMAL /dev/asm-diskb CANDIDATE

(4) 创建三个磁盘组,SYSTEMDG给CRS使用,用于存放OCR,VOTEDISK和ASM实例的SPFILE。其余两个给ORACLE使用,DATADG用于存放datafile,controlfile,redolog,spfile;ARCLOGDG存放archivelog。

SQL> create diskgroup SYSTEMDG external redundancy 2 disk '/dev/asm-diskc' 3 ATTRIBUTE 'compatible.rdbms' = '11.2','compatible.asm' = '11.2'; Diskgroup created. SQL> create diskgroup DATADG external redundancy 2 disk '/dev/asm-diskb' 3 ATTRIBUTE 'compatible.rdbms' = '11.2','compatible.asm' = '11.2'; Diskgroup created. SQL> create diskgroup ARCLOGDG external redundancy 2 disk '/dev/asm-diskd' 3 ATTRIBUTE 'compatible.rdbms' = '11.2','compatible.asm' = '11.2'; Diskgroup created.

(5) 准备恢复OCR和VOTEDISK,/etc/oracle/ocr.loc中记录了OCR路径,修改ocrconfig_loc的值,以便将OCR恢复到新的磁盘组中。

[root@rac1 ~]# more /etc/oracle/ocr.loc ocrconfig_loc=+DATA local_only=FALSE [root@rac1 ~]# vi /etc/oracle/ocr.loc ocrconfig_loc=+SYSTEMDG local_only=FALSE

(6) 恢复OCR

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