Hi,
Refer SAP Note: 1901933
Cause
The connection to the host is not available. Possible causes are:
- Incorrect host or port entry in the ODBC.ini
- Firewall blocking host/port destination
- Client is unable to resolve hostname of the database host
Resolution
- Changes need to be made to the areas defined by the causes above. The ping command can be used to determine if a host can be reached by hostname or IP.
- If unable to connect via host name or IP then the issue is likely with a firewall.
- If unable to connect by host name but can connect by IP the issue is with name resolution.
- If both can be pinged then the issue is likely an incorrect entry or syntax in the ODBC.ini