How To Fix RT451 - &1 Alerts automatically completed, as free space fell below &2 %

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 451

• Message text: &1 Alerts automatically completed, as free space fell below &2 %

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT451 - &1 Alerts automatically completed, as free space fell below &2 % ?

  The SAP error message RT451 indicates that alerts have been automatically completed because the free space in the database or file system has fallen below a specified threshold percentage. This is a critical warning that suggests that the system is running low on storage space, which can lead to performance issues or even system failures if not addressed.
  Cause:
  
  Low Disk Space: The primary cause of this error is that the available disk space on the server hosting the SAP system has dropped below the defined threshold.
  Data Growth: Rapid growth in data volume due to increased transactions, logs, or other data accumulation can lead to this situation.
  Retention Policies: Ineffective data retention policies may result in old data not being archived or deleted, consuming valuable space.
  Temporary Files: Accumulation of temporary files or logs that are not being cleared can also contribute to low disk space.
  
  Solution:
  
  
  Free Up Space:
  
  Delete Unnecessary Files: Identify and delete any unnecessary files, logs, or temporary files that are consuming space.
  Archive Old Data: Implement data archiving strategies to move old data to cheaper storage solutions.
  Adjust Retention Policies: Review and adjust data retention policies to ensure that data is not kept longer than necessary.
  
  
  
  Monitor Disk Usage:
  
  Set up monitoring tools to keep track of disk space usage and receive alerts before reaching critical levels.
  Regularly check the database and file system for space consumption.
  
  
  
  Increase Disk Capacity:
  
  If feasible, consider increasing the disk capacity by adding more storage to the server or migrating to a larger storage solution.
  
  
  
  Database Maintenance:
  
  Perform regular database maintenance tasks such as deleting old logs, optimizing tables, and running database cleanup jobs.
  
  
  
  Review Configuration:
  
  Check the configuration settings for alert thresholds and adjust them if necessary to ensure timely notifications.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RT451 for any specific recommendations or patches that may address this issue.
  System Monitoring Tools: Utilize SAP Solution Manager or other monitoring tools to keep track of system health and performance.
  Documentation: Refer to SAP documentation for best practices on data management and system maintenance.
  
  By addressing the underlying causes of low disk space and implementing proactive measures, you can prevent the recurrence of the RT451 error and ensure the smooth operation of your SAP system.