Note: Running yum update
without first stopping Oracle and FlashGrid services may result in the services restarting non-gracefully during the update.
To update OS on a running server, perform the following steps
-
Create a backup snapshot of the OS disk
a. Flush OS buffers:
# sync
b. Create a snapshot of the OS disk using the cloud console or CLI
-
Stop all running databases.
-
Stop Oracle High Availability Services:
# crsctl stop has
-
Stop FlashGrid Storage Fabric services:
# flashgrid-node stop
-
Install OS updates:
# yum update
-
Reboot the server
# sync; sync
# reboot - On the server run
flashgrid-health-check
command to verify that the status is good and all checks have passed successfully.