How to Upgrade Linux OS In RAC Environment

This post introduces how to upgrade Linux OS from RHEL 5 to RHEL 7 with zero downtime for two nodes RAC. 

Subscribe to get access

Read more of this content when you subscribe today.

How to Relink Oracle 12CR2 Grid Infrastrure ( GI ) Binary

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

How to Relink 12c Oracle GI / RAC Binaries after OS Upgrade

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.

Subscribe to get access

Read more of this content when you subscribe today.