How To Fix D4121 - The database monitor interface was not initialized

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 121

• Message text: The database monitor interface was not initialized

What causes this issue?

A call to the memory based SQL database monitor interface occured before
the interface was initialized.

System Response

&V1&&V2&

How to fix this error?

Please check the value of the SAP profile parameter as4/dbmon/enable.
If the value is 1 and the failing application is an SAP standard
application, then create a problem message using the SAPNet - SAP
Frontend.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message D4121 - The database monitor interface was not initialized ?

  The SAP error message D4121, which states "The database monitor interface was not initialized," typically indicates an issue with the database monitoring functionality in the SAP system. This error can arise due to various reasons, including configuration issues, problems with the database connection, or issues with the SAP kernel.
  Causes:
  
  Database Connection Issues: The SAP system may not be able to connect to the database due to network issues, incorrect database parameters, or database server downtime.
  Configuration Problems: The database monitoring interface may not be properly configured in the SAP system.
  Kernel Issues: An outdated or incompatible SAP kernel version may lead to this error.
  Missing Authorizations: The user may not have the necessary authorizations to access the database monitoring features.
  Database-Specific Issues: There may be specific issues related to the database being used (e.g., Oracle, SQL Server, etc.).
  
  Solutions:
  
  
  Check Database Connection:
  
  Verify that the database server is up and running.
  Check the connection parameters in the SAP system (transaction DBACOCKPIT or DB02).
  Ensure that the network connection between the SAP application server and the database server is stable.
  
  
  
  Review Configuration:
  
  Ensure that the database monitoring interface is correctly configured in the SAP system.
  Check the settings in transaction RZ10 for profile parameters related to database monitoring.
  
  
  
  Update SAP Kernel:
  
  If the kernel version is outdated, consider upgrading to a more recent version that is compatible with your SAP system and database.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the database monitoring features. This can be checked in transaction SU01.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or updates available that resolve the issue.
  
  
  
  Restart Services:
  
  Sometimes, simply restarting the SAP application server or the database server can resolve transient issues.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages that may provide more context about the issue.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on database monitoring and troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if you have a support contract.
  
  By following these steps, you should be able to diagnose and resolve the D4121 error in your SAP system.