How To Fix DB6PM157 - Buffer pool &1 has been changed

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6PM - DB2 UDB for UNIX, Windows: Performance Monitoring

• Message number: 157

• Message text: Buffer pool &1 has been changed

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 DB6PM157 - Buffer pool &1 has been changed ?

  The SAP error message DB6PM157 indicates that a buffer pool in the database has been changed. This message typically arises in the context of database management, particularly when using SAP systems that rely on database buffers for performance optimization.
  Cause:
  The error message DB6PM157 can occur due to several reasons, including:
  
  Configuration Changes: Changes made to the database configuration, such as altering buffer pool sizes or parameters, can trigger this message.
  Database Maintenance: Activities like database upgrades, patches, or maintenance tasks that modify buffer pool settings.
  Resource Management: The database management system (DBMS) may have adjusted buffer pool settings dynamically based on resource availability or performance tuning.
  Database Restart: Restarting the database can also lead to changes in buffer pool configurations.
  
  Solution:
  To resolve the DB6PM157 error, consider the following steps:
  
  Check Database Configuration: Review the database configuration settings to ensure that the buffer pool settings are as intended. You may need to consult the database documentation for specific parameters.
  Monitor Database Logs: Look at the database logs for any additional messages or warnings that may provide context for the buffer pool change.
  Revert Changes: If the buffer pool was changed intentionally, and it is causing issues, consider reverting to the previous configuration.
  Consult Documentation: Refer to the SAP and database documentation for guidance on buffer pool management and best practices.
  Database Administration Tools: Use database administration tools to monitor and manage buffer pools effectively. This can help in identifying performance issues or misconfigurations.
  Contact Support: If the issue persists and you cannot determine the cause, consider reaching out to SAP support or your database vendor for assistance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to buffer pool management.
  Database Documentation: Review the documentation for the specific database you are using (e.g., Oracle, SQL Server, HANA) for detailed information on buffer pool management.
  Performance Tuning: Understanding how buffer pools work can help in optimizing database performance. Consider performance tuning best practices for your specific database system.
  
  By following these steps, you should be able to address the DB6PM157 error and ensure that your SAP system operates smoothly.