How To Fix NET017 - Strategy for name resolution of host names, services, IP addresses, ports

SAP Error Message - Details

• Message type: E = Error

• Message class: NET - Network Messages

• Message number: 017

• Message text: Strategy for name resolution of host names, services, IP addresses, ports

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message NET017 - Strategy for name resolution of host names, services, IP addresses, ports ?

  The SAP error message NET017 typically relates to issues with name resolution in the SAP environment. This error can occur when the system is unable to resolve hostnames, services, IP addresses, or ports, which can lead to connectivity problems between different components of the SAP landscape.
  Causes of NET017 Error
  
  
  DNS Configuration Issues: The Domain Name System (DNS) may not be properly configured, leading to failures in resolving hostnames to IP addresses.
  
  
  Hosts File Misconfiguration: The /etc/hosts file (on Unix/Linux systems) or C:\Windows\System32\drivers\etc\hosts file (on Windows systems) may not contain the correct mappings for the hostnames.
  
  
  Network Connectivity Problems: There may be underlying network issues that prevent the system from reaching the DNS server or the target host.
  
  
  Firewall Restrictions: Firewalls may be blocking the necessary ports or protocols required for name resolution.
  
  
  Incorrect SAP Configuration: The SAP system may have incorrect settings in the instance profile or other configuration files that affect name resolution.
  
  
  Solutions to NET017 Error
  
  
  Check DNS Configuration:
  
  Ensure that the DNS server is reachable and functioning correctly.
  Verify that the hostname you are trying to resolve is correctly configured in the DNS.
  
  
  
  Update Hosts File:
  
  Add the necessary hostname and IP address mappings to the /etc/hosts or hosts file.
  Example entry: 192.168.1.10 myhostname
  
  
  
  Test Network Connectivity:
  
  Use tools like ping, nslookup, or traceroute to check connectivity to the hostname and DNS server.
  Ensure that there are no network issues preventing access.
  
  
  
  Check Firewall Settings:
  
  Review firewall rules to ensure that they allow traffic on the necessary ports (e.g., port 53 for DNS).
  Temporarily disable the firewall to test if it is causing the issue.
  
  
  
  Review SAP Configuration:
  
  Check the instance profile and other configuration files for any incorrect settings related to hostname resolution.
  Ensure that the SAP system is configured to use the correct DNS settings.
  
  
  
  Restart Services:
  
  Sometimes, simply restarting the SAP services or the server can resolve transient issues.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to NET017 for any specific patches or updates that may address known issues.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Refer to SAP documentation for best practices on network configuration and troubleshooting connectivity issues.
  
  By following these steps, you should be able to diagnose and resolve the NET017 error in your SAP environment. If the problem persists, consider reaching out to SAP support for further assistance.