[oracle@qnsdb1 admin]$ srvctl add instance -d qns -i qns3 -n qnsdb3
[oracle@qnsdb1 admin]$ srvctl status database -d qns
Instance qns1 is running on node qnsdb1
Instance qns2 is running on node qnsdb2
Instance qns3 is not running on node qnsdb3
[oracle@qnsdb1 admin]$ srvctl status database -d qns
Instance qns1 is running on node qnsdb1
Instance qns2 is running on node qnsdb2
Instance qns3 is not running on node qnsdb3
[oracle@qnsdb1 admin]$ srvctl remove instance -d qns -i qns3
Remove instance from the database qns? (y/[n]) y
[oracle@qnsdb1 admin]$ srvctl status database -d qns
Instance qns1 is running on node qnsdb1
Instance qns2 is running on node qnsdb2
[oracle@qnsdb1 admin]$
[oracle@qnsdb1 admin]$ srvctl status database -d qns
Instance qns1 is running on node qnsdb1
Instance qns2 is running on node qnsdb2
Instance qns3 is not running on node qnsdb3
[oracle@qnsdb1 admin]$ srvctl status database -d qns
Instance qns1 is running on node qnsdb1
Instance qns2 is running on node qnsdb2
Instance qns3 is not running on node qnsdb3
[oracle@qnsdb1 admin]$ srvctl remove instance -d qns -i qns3
Remove instance from the database qns? (y/[n]) y
[oracle@qnsdb1 admin]$ srvctl status database -d qns
Instance qns1 is running on node qnsdb1
Instance qns2 is running on node qnsdb2
[oracle@qnsdb1 admin]$