I have an opportunity to change the SCAN VIP on Oracle RAC 12c running on Oracle Database Appliance X5-2 HA.
Please note here i'm changing only IP address. if Subnet is also need to change there will be more steps.
The IP addresses associated with the SCAN VIP resources are initially configured in DNS server when the SCAN resources are created.
Any changes to the DNS entry for the SCAN are not automatically propagated to the clusterware and need to be done manually.
Before the SCAN VIPs can be changed, the entry for the SCAN name on the Domain Name Server (DNS) needs to be updated with the new IP addresses.
check the current setting. This output should reflect the new IP address, which is updated in DNS server.
all commands being executed from Grid Home as root user.
nslookup abc-scan
check the current IP address(es) of the SCAN VIPs
srvctl config scan
Stop the SCAN listeners and SCAN.
refresh the SCAN VIPs with the new IP addresses from the DNS entry using the modify command.
srvctl stop scan_listener
srvctl stop scan
srvctl modify scan -n abc-scan
check if the SCAN VIPs have been changed,
srvctl config scan
Restart SCAN & SCAN listener:
srvctl start scan
srvctl start scan_listener
Update the SCAN listener as well.
srvctl modify scan_listener -u
Reference MOS note 952903.1
Thanks
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