Steps to change timezone on a cluster
1. Change the timezone used in OS:
Note: This procedure must be performed on all cluster nodes (database and quorum)
List available timezones:
# timedatectl list-timezones
Set the desired timezone (e.g. America/New_York):
# timedatectl set-timezone America/New_York
Check if the timezone was set:
# timedatectl status
2. Change the timezone used in Grid Infrastructure:
Note: This procedure must be performed only on database nodes
As user grid change the variable TZ to match your desired timezone in the following file:
and restart Grid Infrastructure when possible.
The TZ variable must be exactly as what the OS supports.
How To Change Timezone for Grid Infrastructure (Doc ID 1209444.1)
Timestamps & time zones - Frequently Asked Questions (Doc ID 340512.1)