This error occurs when a client connection failover fails when the client connects to the cluster using IP addresses and the nodes are not included in the local /etc/hosts or DNS.
Adaptive Server sends the failover instance addresses as they are listed in the cluster’s interfaces file. If the cluster’s interfaces file lists the instance network addresses as host names, Adaptive Server returns the host names to the client applications. However, the client application uses DNS or the /etc/hosts file to resolve the names of the hosts for the cluster instances, so if the clients do not have the host names in their /etc/hosts file or DNS server, failover is unsuccessful.
Verify that all nodes in the cluster are listed in the client systems’s DNS server or the client system’s /etc/hosts file.
Try using IP addresses rather than host names in the cluster’s interfaces file.
