This post introduces how to upgrade Linux OS from RHEL 5 to RHEL 7 with zero downtime for two nodes RAC.
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This post introduces how to upgrade Linux OS from RHEL 5 to RHEL 7 with zero downtime for two nodes RAC.
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1)Change ownership of some root owned files like extjobO and jssuO, etc, because the relink script will be run as “grid’ user to change the file permissions.
Otherwise, the relink will fail from the below commands in scripts:
... .. . chmod 600 /u01/app/12.2.0.1/grid/bin/extjoboO ) chmod 700 /u01/app/12.2.0.1/grid/bin/extjobo chmod 600 /u01/app/12.2.0.1/grid/bin/extjobO ) ... .. .
2) As root user:
#umask 0022 #cd /u01/app/12.2.0.1/grid/crs/install # ./rootcrs.sh -unlock
3) As grid user:
$ cd /u01/app/12.2.0.1/grid/bin $ relink writing relink log to: /u01/app/12.2.0.1/grid/install/relink.log -- Check any errors ? $ grep -i error /u01/app/12.2.0.1/grid/install/relink.log
4) As root user:
# cd /u01/app/12.2.0.1/grid/rdbms/install # ./rootadd_rdbms.sh # cd /u01/app/12.2.0.1/grid/crs/install # ./rootcrs.sh -lock Using configuration parameter file: /u01/app/12.2.0.1/grid/crs/install/crsconfig_params The log of current session can be found at: /u01/app/grid/crsdata/racnode1/crsconfig/crslock_racnode1_2018-05-25_11-58-39AM.log
5) Check cluster resources:
$/u01/app/12.2.0.1/grid/bin/crsctl stat res -t
It is recommended to relink GI and RAC Home binaries after OS upgrading or patching.
This post demonstrates how to relink Oracle Grid Infrastructure ( GI ) and RAC Home binaries after OS upgrading or patching.
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