How To Fix USMD1B064 - Buffering allowed, log switched on

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1B - Meldungen: MDF Anschluss

• Message number: 064

• Message text: Buffering allowed, log switched on

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 USMD1B064 - Buffering allowed, log switched on ?

  The SAP error message USMD1B064 indicates that buffering is allowed for a particular table, but the logging for changes to that table is switched on. This situation can lead to performance issues because when logging is enabled, it can negate some of the performance benefits that come from buffering.
  Cause:
  The error typically arises in the context of database table settings in SAP. Specifically, it occurs when:
  
  A table is configured to allow buffering (i.e., it is set to be buffered in the database).
  However, the logging for changes to that table is enabled, which is not a recommended configuration because it can lead to inconsistencies and performance degradation.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check Table Settings:
  
  Use transaction code SE11 to check the table definition.
  Look for the buffering settings and the logging settings.
  
  
  
  Adjust Buffering or Logging:
  
  If the table is not critical for logging, consider disabling the logging for that table. This can be done by changing the table settings in the Data Dictionary (SE11).
  If logging is necessary, consider disabling buffering for that table instead.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific table to understand the implications of changing these settings.
  
  
  
  Test Changes:
  
  After making changes, ensure to test the application to confirm that the performance has improved and that there are no adverse effects on data integrity.
  
  
  
  Transport Changes:
  
  If changes are made in a development environment, ensure to transport them to the production environment following your organization's change management procedures.
  
  
  
  Related Information:
  
  Buffering: Buffering in SAP allows frequently accessed data to be stored in memory, which can significantly improve performance. However, it is essential to manage it correctly to avoid issues.
  Logging: Change logging is used to track changes made to the data in a table. It is crucial for data integrity and auditing but can impact performance if not managed properly.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or updates related to this error message.
  
  Conclusion:
  The USMD1B064 error message is a configuration issue that can be resolved by carefully managing the buffering and logging settings of the affected table. Always ensure to follow best practices and test any changes in a controlled environment before applying them to production.