check rac database
$srvctl config database
check scan ip
$ srvctl config scan
check vip
$ srvctl config vip -n knewracn1
VIP exists: network number 1, hosting node knewracn1
VIP IPv4 Address: -/knewracn1-vip/172.16.150.37
VIP IPv6 Address:
$ srvctl config vip -n knewracn2
VIP exists: network number 1, hosting node knewracn2
VIP IPv4 Address: -/knewracn2-vip/172.16.150.182
VIP IPv6 Address: