Oracle Error CLSGN-00209: Listen for DNS requests failed. IP address string port number is in use.

Oracle Error Message

CLSGN-00209: Listen for DNS requests failed. IP address string port number is in use.

Reason for the Error

Listening for requests from the DNS server(s) failed because another process is using the address.

Solution

If another GNS instance is running, this error is expected. Otherwise, terminate the process using the address or start GNS on another node.