How To Fix DBOSC664 - Error while using connection (&1); system is not available

SAP Error Message - Details

• Message type: E = Error

• Message class: DBOSC -

• Message number: 664

• Message text: Error while using connection (&1); system is not available

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 DBOSC664 - Error while using connection (&1); system is not available ?

  The SAP error message DBOSC664 indicates that there is an issue with the database connection. Specifically, it states that the system is not available when trying to use the specified connection. This error can arise from various causes, and here are some common reasons, potential solutions, and related information:
  Causes:
  
  Database Server Down: The database server may be down or not reachable due to network issues or maintenance.
  Incorrect Connection Parameters: The connection parameters (like hostname, port, database name) may be incorrect.
  Firewall Issues: A firewall may be blocking the connection to the database server.
  Database Configuration Issues: The database may not be configured correctly to accept connections from the SAP application.
  Resource Limitations: The database server may be experiencing resource limitations (e.g., memory, CPU) that prevent it from accepting new connections.
  User Authentication Issues: The user credentials used to connect to the database may be incorrect or the user may not have the necessary permissions.
  
  Solutions:
  
  Check Database Server 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 or checking the server status.
  Verify Connection Parameters: Double-check the connection parameters in the SAP system configuration (e.g., DB connection settings in the SAP profile or transaction codes like DBACOCKPIT).
  Network Connectivity: Test the network connectivity between the SAP application server and the database server. Use tools like ping or telnet to check if the database server is reachable.
  Firewall Configuration: Ensure that any firewalls between the SAP application and the database server are configured to allow traffic on the required ports.
  Database Logs: Check the database logs for any errors or warnings that might indicate why the connection is failing.
  User Permissions: Verify that the user credentials being used have the necessary permissions to connect to the database.
  Restart Services: If the database server is running but still not accepting connections, consider restarting the database service.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to your specific version of SAP and the database you are using. SAP Notes often provide patches or workarounds for specific errors.
  Transaction Codes: Use transaction codes like DBACOCKPIT or SM21 to monitor database connections and check for any related error messages in the SAP system logs.
  Documentation: Refer to the official SAP documentation for your specific database (e.g., Oracle, HANA, SQL Server) for configuration and troubleshooting guidelines.
  
  If the issue persists after trying the above solutions, it may be beneficial to involve your database administrator or SAP support for further assistance.