Oracle® Database 11g / 12c / 18c error codes ORA-12230: TNS:Severe Network error occurred in making this connection
ORA-12230: TNS:Severe Network error occurred in making this connection
Oracle Error Code: ORA-12230
Cause: This error is reported by an interchange which fails to make contact with the destination due to a physical network error while calling a destination.
Action: Try again later when the network service may have been fixed or report the problem to your Network Administrator so that he may fix the problem.