How To Fix RSDD_ZA150 - Check on hosts without network connection

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 150

• Message text: Check on hosts without network connection

What causes this issue?

The system has detected connection problems during network connection
checks in SAP NetWeaver BW Accelerator. More information about the
affected hosts can be found in the details.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Contact your system administrator. If the system proposes a solution,
follow the instructions it provides.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD_ZA150 - Check on hosts without network connection ?

  The SAP error message RSDD_ZA150, which indicates a "Check on hosts without network connection," typically arises in the context of SAP BW (Business Warehouse) or SAP HANA environments. This error suggests that there is an issue with the connectivity between the SAP system and the database or other components that it needs to communicate with.
  Causes:
  
  Network Issues: The most common cause is a network connectivity problem. This could be due to network outages, misconfigured network settings, or firewall rules blocking communication.
  Host Configuration: The host names or IP addresses configured in the SAP system may not be reachable or may be incorrectly specified.
  Database Availability: The database server may be down or not responding, leading to connectivity issues.
  DNS Resolution: If the SAP system relies on DNS for host resolution, any issues with DNS configuration can lead to this error.
  SAP System Configuration: Incorrect settings in the SAP system configuration related to the database or application servers can also lead to this error.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to check if the SAP system can reach the database or other required hosts.
  Ensure that there are no network outages or issues affecting connectivity.
  
  
  
  Verify Host Configuration:
  
  Check the configuration settings in the SAP system (transaction codes like RZ10, RZ11, or RZ12) to ensure that the host names and IP addresses are correctly specified.
  Update any incorrect entries.
  
  
  
  Database Status:
  
  Ensure that the database server is up and running. Check the database logs for any errors or issues.
  Restart the database if necessary.
  
  
  
  DNS Configuration:
  
  Verify that the DNS settings are correct and that the SAP system can resolve the hostnames of the database and other components.
  If necessary, add entries to the /etc/hosts file on the SAP application server for critical hosts.
  
  
  
  Firewall Settings:
  
  Check firewall settings to ensure that the necessary ports for SAP and the database are open and not being blocked.
  
  
  
  SAP Notes and Support:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  If the issue persists, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM21 (System Log), ST22 (Dump Analysis), and SM37 (Job Monitoring) to gather more information about the error context.
  Logs: Review system logs and trace files for any additional error messages or warnings that may provide more context about the issue.
  Documentation: Refer to SAP documentation for best practices on network configuration and troubleshooting connectivity issues.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the RSDD_ZA150 error message.