How To Fix STUN_ORA024 - Could not open connection to the remote database

SAP Error Message - Details

• Message type: E = Error

• Message class: STUN_ORA - Messages for Function Group STUN_ORA (Oracle Statistics)

• Message number: 024

• Message text: Could not open connection to the remote database

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.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message STUN_ORA024 - Could not open connection to the remote database ?

  The SAP error message STUN_ORA024: Could not open connection to the remote database typically indicates that there is an issue with the connection between the SAP system and the Oracle database. This error can arise from various causes, and here are some common reasons along with potential solutions:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP application server and the Oracle database server.
  Database Service Not Running: The Oracle database service may not be running or may have crashed.
  Incorrect Connection Parameters: The connection parameters (like hostname, port, service name, or SID) specified in the SAP configuration may be incorrect.
  Firewall Restrictions: A firewall may be blocking the connection to the Oracle database.
  Database Listener Issues: The Oracle listener may not be configured correctly or may not be running.
  Resource Limitations: The database may be experiencing resource limitations (e.g., memory, connections).
  Authentication Issues: There may be issues with the credentials used to connect to the database.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or tnsping to verify that the SAP server can reach the Oracle database server.
  Ensure that there are no network outages or issues.
  
  
  
  Verify Database Service:
  
  Check if the Oracle database service is running. You can do this by logging into the database server and using commands like sqlplus to connect to the database.
  Restart the database service if necessary.
  
  
  
  Review Connection Parameters:
  
  Double-check the connection parameters in the SAP configuration (e.g., DB Connection settings in SAP).
  Ensure that the hostname, port, and service name/SID are correct.
  
  
  
  Check Firewall Settings:
  
  Ensure that the firewall settings on both the SAP server and the Oracle server allow traffic on the required ports (default Oracle port is 1521).
  
  
  
  Verify Oracle Listener:
  
  Check if the Oracle listener is running using the command lsnrctl status.
  If it is not running, start it with lsnrctl start.
  
  
  
  Monitor Database Resources:
  
  Check the database for any resource limitations or performance issues. Use Oracle tools to monitor connections and resource usage.
  
  
  
  Check Authentication:
  
  Ensure that the credentials (username and password) used to connect to the database are correct and have the necessary permissions.
  
  
  
  Review SAP Logs:
  
  Check the SAP application logs for any additional error messages or details that may provide more context about the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error.
  Oracle Documentation: Refer to Oracle documentation for troubleshooting database connectivity issues.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP Basis team or Oracle DBA for further investigation.