How To Fix RSDS_ACCESS021 - Could not open connection to database system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS_ACCESS - Access Messages

• Message number: 021

• Message text: Could not open connection to database system &1

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 RSDS_ACCESS021 - Could not open connection to database system &1 ?

  The SAP error message RSDS_ACCESS021 indicates that there is an issue with connecting to the database system specified in the error message. This can occur in various scenarios, particularly when working with SAP Data Services or when trying to access data from a database in SAP BW (Business Warehouse).
  Causes:
  
  Database Connection Issues: The database server may be down, or there may be network issues preventing access to the database.
  Incorrect Connection Parameters: The connection parameters (such as hostname, port, username, password) may be incorrect or misconfigured.
  Database User Permissions: The user account being used to connect to the database may not have the necessary permissions to access the database.
  Database Configuration: The database may not be configured to accept connections from the SAP system.
  Firewall or Security Settings: Firewalls or security settings may be blocking the connection to the database.
  Database Driver Issues: The database driver may not be installed correctly or may be incompatible with the version of the database or SAP.
  
  Solutions:
  
  Check Database Status: Ensure that the database server is up and running. You can do this by trying to connect to the database using a database client tool.
  Verify Connection Parameters: Double-check the connection parameters in the SAP system. Ensure that the hostname, port, username, and password are correct.
  Review User Permissions: Make sure that the user account has the necessary permissions to access the database. You may need to consult with your database administrator.
  Check Database Configuration: Ensure that the database is configured to accept connections from the SAP system. This may involve checking settings in the database configuration files.
  Firewall Settings: Check if there are any firewall rules that might be blocking the connection. You may need to work with your network team to resolve this.
  Update or Reinstall Database Drivers: If you suspect that the database driver is the issue, consider updating or reinstalling the driver to ensure compatibility.
  SAP Notes and Documentation: Check SAP Notes for any known issues or patches related to this error message. SAP's support portal may have additional information or solutions.
  
  Related Information:
  
  SAP Basis Team: If you are unable to resolve the issue, it may be necessary to involve your SAP Basis team, as they have the expertise to troubleshoot connectivity issues.
  Database Logs: Review the database logs for any error messages that might provide more context about the connection failure.
  SAP Community: Consider searching or posting in the SAP Community forums for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the RSDS_ACCESS021 error effectively.