Unknown Host Error when executing Query through ABAP WEB

Hi,

I'm trying to execute a query through ABAP WEB in RSRT transaction, but I'm getting an error message as below. Please let me know what are the settings I've missed.

Unknown Host

Description: Unable to locate the server named "gdcprdbi.hotels.com" --- the server does not have a DNS entry. Perhaps there is a misspelling in the server name, or the server no longer exists. Double-check the name and try again.