How To Fix /PF1/MSG_LOG_GUI900 - Application Log is full, cannot add new messages

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_LOG_GUI -

• Message number: 900

• Message text: Application Log is full, cannot add new messages

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PF1/MSG_LOG_GUI900 - Application Log is full, cannot add new messages ?

  The SAP error message /PF1/MSG_LOG_GUI900 Application Log is full, cannot add new messages indicates that the application log for a specific process or transaction has reached its maximum capacity. This can prevent new log entries from being added, which may hinder troubleshooting and monitoring activities.
  Cause:
  
  Log Size Limit: Each application log has a predefined size limit. When this limit is reached, no new messages can be added until space is freed up.
  Retention Settings: The retention settings for the application log may not be configured to delete old entries, leading to a full log.
  High Volume of Logs: Certain transactions or processes may generate a high volume of log messages, quickly filling up the log.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Delete Old Log Entries:
  
  Use transaction code SLG1 to access the application log.
  Specify the object and sub-object for which the log is full.
  You can delete old log entries manually or set up a background job to do this regularly.
  
  
  
  Adjust Retention Settings:
  
  You can adjust the retention settings for application logs using transaction SLG0.
  Here, you can define how long logs should be retained before they are automatically deleted.
  
  
  
  Increase Log Size:
  
  If necessary, you can increase the maximum size of the application log. This can be done in the configuration settings, but it should be approached with caution as it may lead to increased database usage.
  
  
  
  Monitor Log Usage:
  
  Regularly monitor the application logs to ensure they do not fill up unexpectedly. You can set up alerts or reports to notify you when log usage is high.
  
  
  
  Archiving:
  
  Consider implementing an archiving strategy for application logs if they are not needed for immediate access. This can help manage the size of logs effectively.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SLG1: Display Application Log
  SLG0: Application Log Management
  SLG2: Archive Application Log
  
  
  Documentation: Refer to SAP Help documentation for more details on managing application logs and configuring retention settings.
  Performance Considerations: Be mindful of the performance implications of large logs and ensure that your database is adequately sized to handle the expected log volume.
  
  By following these steps, you should be able to resolve the error and prevent it from occurring in the future.