How To Fix NET030 - Time required unsuccessful resolution of host name

SAP Error Message - Details

• Message type: E = Error

• Message class: NET - Network Messages

• Message number: 030

• Message text: Time required unsuccessful resolution of host name

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message NET030 - Time required unsuccessful resolution of host name ?

  The SAP error message NET030 indicates that there was an unsuccessful attempt to resolve a hostname. This typically occurs when the SAP system is trying to connect to a network resource (like a database, application server, or other services) and cannot resolve the hostname to an IP address.
  Causes of NET030 Error
  
  DNS Issues: The hostname may not be correctly configured in the Domain Name System (DNS), or the DNS server may be unreachable.
  Hosts File Configuration: The hostname may not be listed in the local hosts file, or there may be an incorrect entry.
  Network Connectivity: There may be network issues preventing the SAP system from reaching the DNS server or the target host.
  Firewall or Security Settings: Firewalls or security settings may be blocking access to the hostname.
  Incorrect Hostname: The hostname specified in the configuration may be incorrect or misspelled.
  SAP Configuration: The SAP system may not be properly configured to use the correct DNS settings.
  
  Solutions to NET030 Error
  
  
  Check DNS Configuration:
  
  Ensure that the DNS server is reachable from the SAP server.
  Use commands like nslookup or ping to verify that the hostname can be resolved.
  
  
  
  Update Hosts File:
  
  If DNS resolution is not working, consider adding the hostname and its corresponding IP address to the local hosts file (located at /etc/hosts on Unix/Linux or C:\Windows\System32\drivers\etc\hosts on Windows).
  
  
  
  Verify Network Connectivity:
  
  Check the network connection to ensure that the SAP server can communicate with the DNS server and the target host.
  
  
  
  Check Firewall Settings:
  
  Ensure that there are no firewall rules blocking access to the hostname or DNS server.
  
  
  
  Correct Hostname:
  
  Double-check the hostname in the SAP configuration to ensure it is correct and properly formatted.
  
  
  
  SAP Profile Parameters:
  
  Review the SAP profile parameters related to network settings, such as rdisp/mshost, rdisp/msserv, and rdisp/hostname, to ensure they are correctly set.
  
  
  
  Restart Services:
  
  Sometimes, restarting the SAP services or the server itself can resolve transient issues.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the NET030 error.
  Logs: Review the SAP system logs (transaction SM21) and developer traces (transaction ST22) for additional context or related errors.
  Network Tools: Utilize network diagnostic tools to troubleshoot connectivity issues, such as traceroute or telnet.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the NET030 error in your SAP environment.