How To Fix DBOSC336 - Error while resolving host name &1; rc=&2

SAP Error Message - Details

• Message type: E = Error

• Message class: DBOSC -

• Message number: 336

• Message text: Error while resolving host name &1; rc=&2

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 DBOSC336 - Error while resolving host name &1; rc=&2 ?

  The SAP error message DBOSC336 indicates that there is an issue with resolving a hostname, which is typically related to database connectivity problems. The error message format is as follows:
  DBOSC336 Error while resolving host name &1; rc=&2
  Where &1 represents the hostname that could not be resolved, and &2 represents the return code from the resolution attempt.
  Causes
  
  
  DNS Issues: The hostname cannot be resolved due to DNS configuration problems. This could be due to incorrect DNS server settings or the hostname not being registered in the DNS.
  
  
  Network Configuration: There may be network issues preventing the SAP system from reaching the DNS server or the host itself.
  
  
  Incorrect Hostname: The hostname specified in the SAP configuration might be incorrect or misspelled.
  
  
  Hosts File: The hostname may not be listed in the /etc/hosts file (on Unix/Linux systems) or C:\Windows\System32\drivers\etc\hosts (on Windows systems).
  
  
  Firewall or Security Settings: Firewalls or security settings may be blocking access to the hostname.
  
  
  Solutions
  
  
  Check Hostname: Verify that the hostname specified in the SAP configuration is correct. Ensure there are no typos.
  
  
  DNS Configuration: Check the DNS settings on the server where SAP is running. Ensure that the DNS server is reachable and that the hostname can be resolved using tools like nslookup or ping.
  
  
  Update Hosts File: If the hostname is not resolvable via DNS, consider adding an entry to the /etc/hosts file (or the Windows hosts file) to map the hostname to its corresponding IP address.
  
  
  Network Connectivity: Ensure that there are no network issues preventing access to the DNS server or the target host. You can use tools like ping or traceroute to diagnose network connectivity.
  
  
  Firewall Settings: Check firewall settings to ensure that they are not blocking access to the hostname or DNS server.
  
  
  SAP Configuration: Review the SAP configuration settings (e.g., in the instance profile) to ensure that the database connection parameters are correctly set.
  
  
  Related Information
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error. SAP frequently releases notes that address known issues.
  
  
  Logs: Review the SAP application logs and system logs for additional error messages or context that may help diagnose the issue.
  
  
  Documentation: Refer to SAP documentation for guidance on configuring database connections and troubleshooting connectivity issues.
  
  
  By following these steps, you should be able to identify and resolve the underlying cause of the DBOSC336 error in your SAP environment.