How To Fix DB6PM785 - DBCFG - LOGBUFSZ - SAP recommendation: at least 1024

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 785

• Message text: DBCFG - LOGBUFSZ - SAP recommendation: at least 1024

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 DB6PM785 - DBCFG - LOGBUFSZ - SAP recommendation: at least 1024 ?

  The SAP error message DB6PM785 DBCFG - LOGBUFSZ indicates that the log buffer size for the database is set below the recommended minimum of 1024. This can lead to performance issues, as the log buffer is crucial for managing database transactions efficiently.
  Cause:
  The error is typically caused by the log buffer size being configured to a value lower than the recommended threshold. This can happen due to:
  
  Default settings during installation or configuration.
  Manual changes to the database configuration that inadvertently reduced the log buffer size.
  Upgrades or migrations that did not adjust the log buffer size appropriately.
  
  Solution:
  To resolve this issue, you need to increase the log buffer size to at least 1024. The steps to do this can vary depending on the database system you are using (e.g., Oracle, SQL Server, HANA, etc.). Here’s a general approach:
  
  
  Identify the Database System: Determine which database you are using with your SAP system.
  
  
  Access Database Configuration: Use the appropriate database management tools or SQL commands to access the configuration settings.
  
  
  Modify Log Buffer Size:
  
  For Oracle:
  
  You can modify the LOG_BUFFER parameter. Use the following SQL command:
  ALTER SYSTEM SET LOG_BUFFER = 1024 SCOPE=BOTH;
  
  
  
  For SQL Server:
  
  You may need to adjust the max server memory or other related settings, but SQL Server typically manages log buffers automatically.
  
  
  For SAP HANA:
  
  You can adjust the log_buffer_size parameter in the configuration settings.
  
  
  
  
  
  Restart the Database: After making changes, you may need to restart the database for the changes to take effect.
  
  
  Verify Changes: After the restart, check the configuration to ensure that the log buffer size is now set to at least 1024.
  
  
  Related Information:
  
  Performance Impact: A small log buffer can lead to increased I/O operations, which can degrade performance, especially during high transaction volumes.
  Monitoring: Regularly monitor the database performance and log buffer usage to ensure that it remains within optimal parameters.
  SAP Notes: Check SAP Notes and documentation for specific recommendations related to your database version and SAP system version.
  
  Conclusion:
  Adjusting the log buffer size is a straightforward process but is crucial for maintaining optimal database performance in an SAP environment. Always ensure to back up your configuration before making changes and consult your database administrator if you are unsure about the modifications.