How To Fix CNV_DMC_MC_EXCEPTION154 - Database connection could not be retrieved

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_MC_EXCEPTION - Exception texts of Migration Object Modeller

• Message number: 154

• Message text: Database connection could not be retrieved

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION154 - Database connection could not be retrieved ?

  The SAP error message CNV_DMC_MC_EXCEPTION154 indicates that there is an issue with retrieving a database connection during a data migration or conversion process. This error is typically associated with the Data Migration Cockpit (DMC) or other migration tools within SAP.
  Causes:
  
  Database Connectivity Issues: The most common cause is a failure in the connection to the database. This could be due to network issues, database server downtime, or incorrect connection parameters.
  Configuration Errors: Incorrect configuration settings in the DMC or the database connection settings can lead to this error.
  User Permissions: The user account being used to connect to the database may not have the necessary permissions to access the database.
  Database Driver Issues: Problems with the database drivers or libraries required for the connection can also cause this error.
  Resource Limitations: The database server may be experiencing resource limitations (e.g., memory, CPU) that prevent new connections from being established.
  
  Solutions:
  
  
  Check Database Connectivity:
  
  Verify that the database server is up and running.
  Test the network connection to the database server.
  Use tools like ping or telnet to check connectivity.
  
  
  
  Review Connection Parameters:
  
  Ensure that the connection parameters (hostname, port, database name, username, password) are correct.
  Check the configuration files for any typos or incorrect settings.
  
  
  
  User Permissions:
  
  Confirm that the user account has the necessary permissions to access the database.
  If needed, consult with your database administrator to grant the required permissions.
  
  
  
  Check Database Drivers:
  
  Ensure that the correct database drivers are installed and configured properly.
  Update or reinstall the drivers if necessary.
  
  
  
  Monitor Database Resources:
  
  Check the database server for any resource limitations or performance issues.
  If the server is under heavy load, consider optimizing queries or increasing resources.
  
  
  
  Review Logs:
  
  Check the SAP application logs and database logs for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Restart Services:
  
  Sometimes, simply restarting the SAP application server or the database server can resolve transient connectivity issues.
  
  
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the Data Migration Cockpit and related tools for best practices and configuration guidelines.
  Community Forums: Engage with the SAP Community or other forums where similar issues may have been discussed, as other users may have encountered and resolved the same error.
  
  If the issue persists after trying the above solutions, it may be necessary to escalate the problem to SAP support for further assistance.