How To Fix DB6534 - An invalid value has been reported for the DFT_UOW switch

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6 - DB6: Alert Monitoring and Alert Configuration

• Message number: 534

• Message text: An invalid value has been reported for the DFT_UOW switch

Copy of DB6 531

What causes this issue?

To allow meaningful monitoring of the database, you must activate this
switch.

System Response

If this switch is not set, it can lead to problems ranging from
restricting the function of the CCMS transactions to erroneous
terminations.

How to fix this error?

Activate the switch by setting the appropriate database manager
parameters using the following command:
<LB>UPDATE DBM CFG USING DFT_MON_UOW ON </>
The setting will become active at the next connection to the database.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DB6534 - An invalid value has been reported for the DFT_UOW switch ?

  The SAP error message DB6534, which states "An invalid value has been reported for the DFT_UOW switch," typically relates to issues with the database connection or transaction management in SAP systems, particularly when using database systems that support distributed transactions.
  Cause:
  The error is usually caused by one of the following reasons:
  
  
  Invalid Configuration: The DFT_UOW (Default Unit of Work) switch is not set correctly in the database configuration. This switch is used to manage transaction boundaries in distributed environments.
  
  
  Database Driver Issues: The database driver being used may not support the DFT_UOW switch or may have compatibility issues.
  
  
  Incorrect Application Logic: The application may be trying to set the DFT_UOW switch to an invalid value, which could be due to programming errors or misconfigurations in the application code.
  
  
  Database Connection Issues: There may be issues with the database connection itself, such as network problems or incorrect connection parameters.
  
  
  Solution:
  To resolve the DB6534 error, you can take the following steps:
  
  
  Check Configuration: Review the database configuration settings in the SAP system. Ensure that the DFT_UOW switch is set to a valid value. Consult the documentation for your specific database to determine the correct settings.
  
  
  Update Database Drivers: Ensure that you are using the latest version of the database drivers. If you are using an older version, consider updating to a newer version that supports the DFT_UOW switch correctly.
  
  
  Review Application Code: If you have custom code that interacts with the database, review it to ensure that it is not attempting to set the DFT_UOW switch to an invalid value. Look for any hardcoded values or logic that may lead to this issue.
  
  
  Test Database Connection: Verify that the database connection is functioning correctly. Check for any network issues, incorrect credentials, or other connection parameters that may be causing problems.
  
  
  Consult Documentation: Refer to the SAP and database documentation for any specific notes or guidelines related to the DFT_UOW switch and its configuration.
  
  
  Contact Support: If the issue persists after trying the above steps, consider reaching out to SAP support or your database vendor for further assistance.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the DB6534 error. SAP frequently updates its knowledge base with solutions to common problems.
  Database Documentation: Review the documentation for the specific database you are using (e.g., Oracle, SQL Server, etc.) for details on transaction management and the DFT_UOW switch.
  Transaction Management: Understanding how transactions are managed in your SAP environment can help in diagnosing issues related to distributed transactions.
  
  By following these steps, you should be able to identify and resolve the cause of the DB6534 error in your SAP system.