Oracle Study之--AIX RAC下OCR磁盘故障（PROT-602）

Oracle Study之--AIX RAC下OCR磁盘故障（PROT-602）

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故障现象：

[root@aix208 /]#crsctl check crs
Failure 1 contacting CSS daemon
Cannot communicate with CRS
EVM appears healthy

[root@aix208 /]#ocrcheck
PROT-602: Failed to retrieve data from the cluster reGIStry

----OCR disk被用户误删除 ！

解决方法：

通过ocrconfig工具恢复：

[root@aix208 /]#ocrconfig
Name:
        ocrconfig - Configuration tool for oracle Cluster Registry.
Synopsis:
        ocrconfig [option]
        option:
                -export <filename> [-s online]
                                                    - Export cluster register contents to a file
                -import <filename>                  - Import cluster registry contents from a file
                -upgrade [<user> [<group>]]
                                                    - Upgrade cluster registry from previous version
                -downgrade [-version <version string>]
                                                    - Downgrade cluster registry to the specified version
                -backuploc <dirname>                - Configure periodic backup location
                -showbackup                         - Show backup information
                -restore <filename>                 - Restore from physical backup
                -replace ocr|ocrmirror [<filename>] - Add/replace/remove a OCR device/file
                -overwrite                          - Overwrite OCR configuration on disk
                -repair ocr|ocrmirror <filename>    - Repair local OCR configuration
                -help                               - Print out this help information
Note:
        A log file will be created in
        $ORACLE_HOME/log/<hostname>/client/ocrconfig_<pid>.log. Please ensure
        you have file creation privileges in the above directory before
        running this tool.

1) 通过repair修复
[root@aix208 /]#ocrconfig -repair ocr
[root@aix208 /]#ocrcheck
PROT-601: Failed to initialize ocrcheck

查看ocr设备文件：

[root@aix208 /]#ls -l /dev |grep ocr
brw-rw----    1 oracle   dba         123,  1 Feb 24 14:54 rac_ocr
brw-rw----    1 root     system      123, 20 Feb 25 12:01 rac_ocr2
crw-r-----    1 root     dba         123,  1 Feb 25 12:16 rrac_ocr
-rw-r--r--    1 root     system    139264000 Feb 22 13:50 rrac_ocr1
crw-rw----    1 oracle   dba         123, 20 Feb 25 12:16 rrac_ocr2

[root@aix208 /]#ocrconfig -repair ocr /dev/rrac_ocr
[root@aix208 /]#ocrcheck
PROT-601: Failed to initialize ocrcheck

[root@aix208 /]#ocrconfig -replace ocr /dev/rrac_ocr
PROT-1: Failed to initialize ocrconfig

2）通过ocr备份修复：
[root@aix208 /]#ocrconfig -showbackup

查看备份数据：
[root@aix208 /]#cd /u01/crs_1/cdata/crs
[root@aix208 crs]#ls
backup00.ocr  day.ocr       week.ocr
[root@aix208 crs]#ls -l
total 20256
-rw-r--r--    1 root     system      3457024 Feb 25 11:48 backup00.ocr
-rw-r--r--    1 root     system      3457024 Feb 25 11:48 day.ocr
-rw-r--r--    1 root     system      3457024 Feb 25 11:48 week.ocr
[root@aix208 crs]#ls -lt
total 20256
-rw-r--r--    1 root     system      3457024 Feb 25 11:48 week.ocr
-rw-r--r--    1 root     system      3457024 Feb 25 11:48 day.ocr
-rw-r--r--    1 root     system      3457024 Feb 25 11:48 backup00.ocr

通过备份，使用restore工具修复：
[root@aix208 crs]#ocrconfig -restore /u01/crs_1/cdata/crs/day.ocr

[root@aix208 crs]#ocrcheck 
Status of Oracle Cluster Registry is as follows :
         Version                  :          2
         Total space (kbytes)     :     130984
         Used space (kbytes)      :       3252
         Available space (kbytes) :     127732
         ID                       :  133619783
         Device/File Name         : /dev/rrac_ocr
                                    Device/File integrity check succeeded
                                    Device/File not configured
         Cluster registry integrity check succeeded

[root@aix208 crs]#crsctl check crs
CSS appears healthy
CRS appears healthy
EVM appears healthy

[root@aix208 crs]#crs_stat -t
Name           Type           Target    State     Host        
------------------------------------------------------------
ora....07.lsnr application    ONLINE    ONLINE    aix207      
ora.aix207.gsd application    ONLINE    ONLINE    aix207      
ora.aix207.ons application    ONLINE    ONLINE    aix207      
ora.aix207.vip application    ONLINE    ONLINE    aix207      
ora....08.lsnr application    ONLINE    ONLINE    aix208      
ora.aix208.gsd application    ONLINE    ONLINE    aix208      
ora.aix208.ons application    ONLINE    ONLINE    aix208      
ora.aix208.vip application    ONLINE    ONLINE    aix208      
ora.prod.db    application    ONLINE    ONLINE    aix207      
ora....d1.inst application    ONLINE    ONLINE    aix207      
ora....d2.inst application    ONLINE    OFFLINE   aix208

------ 修复成功！！！