How To Fix /SDF/DB6154 - Percentage of the dirty page steal cleaners

SAP Error Message - Details

• Message type: E = Error

• Message class: /SDF/DB6 -

• Message number: 154

• Message text: Percentage of the dirty page steal cleaners

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SDF/DB6154 - Percentage of the dirty page steal cleaners ?

  The SAP error message /SDF/DB6154 Percentage of the dirty page steal cleaners typically relates to issues with the database's memory management, specifically concerning the handling of dirty pages in the database buffer. This error can indicate that the system is experiencing performance issues due to a high percentage of dirty pages, which are pages that have been modified in memory but not yet written to disk.
  Cause:
  
  High Write Activity: If there is a high volume of write operations occurring, it can lead to an accumulation of dirty pages.
  Insufficient Buffer Memory: If the buffer memory allocated to the database is insufficient, it can lead to a higher percentage of dirty pages.
  Inefficient Cleaning Process: The process responsible for writing dirty pages back to disk (the "cleaner") may not be functioning efficiently, leading to a backlog of dirty pages.
  Database Configuration: Incorrect configuration settings for the database can also contribute to this issue.
  
  Solution:
  
  Increase Buffer Memory: Consider increasing the buffer memory allocated to the database to accommodate more data and reduce the percentage of dirty pages.
  Optimize Write Operations: Review and optimize the application logic to reduce unnecessary write operations, which can help decrease the number of dirty pages.
  Adjust Cleaner Settings: Check the configuration settings for the cleaner process. Adjusting parameters related to the frequency and aggressiveness of the cleaning process may help.
  Monitor Database Performance: Use monitoring tools to keep an eye on database performance metrics. This can help identify patterns or spikes in write activity that may be contributing to the issue.
  Database Maintenance: Regularly perform database maintenance tasks, such as reorganizing or rebuilding indexes, to improve overall performance.
  Consult Documentation: Refer to the SAP documentation or support for specific recommendations related to your version of the database and SAP system.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Database Logs: Review database logs for any additional error messages or warnings that may provide more context about the issue.
  Performance Tuning: Consider engaging in performance tuning exercises for the database to ensure optimal configuration and resource allocation.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with SAP support or a database administrator for further assistance.