4.4.6 Confirming the DNS Configuration for SCAN

You can use the nslookup command to confirm that the DNS is correctly associating the SCAN with the addresses.

After installation, when a client sends a request to the cluster, the Oracle Clusterware SCAN listeners redirect client requests to servers in the cluster.
  • At a command prompt, use the nslookup command and specify the name of the SCAN for your cluster.
    For example:
    C:\> nslookup mycluster-scan
    Server:         dns3.example.com
    Address:        192.0.2.001
     
    Name:   mycluster-scan.example.com
    Address: 192.0.2.201
    Name:   mycluster-scan.example.com
    Address: 192.0.2.202
    Name:   mycluster-scan.example.com
    Address: 192.0.2.203