Try to stop mgmtdb, and relocate mgmtdb to another node with below errors:
$ srvctl status mgmtdb Database is enabled Instance -MGMTDB is running on node racnode1 $ srvctl stop mgmtdb PRCD-1334 : failed to stop database _mgmtdb PRCR-1065 : Failed to stop resource ora.mgmtdb CRS-2974: unable to act on resource 'ora.mgmtdb' on server 'racnode1' because that would require stopping or relocating resource 'ora.chad' but the -force option was not specified
Just relocate mgmtdb, it works.
$ srvctl relocate mgmtdb -node racnode2 $ srvctl status mgmtdb Database is enabled Instance -MGMTDB is running on node racnode2
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