How To Fix RSCRT172 - Lock on daemon &1 could not be set - no restart

SAP Error Message - Details

• Message type: E = Error

• Message class: RSCRT - Near-To-Real-Time Messages

• Message number: 172

• Message text: Lock on daemon &1 could not be set - no restart

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 RSCRT172 - Lock on daemon &1 could not be set - no restart ?

  The SAP error message RSCRT172 indicates that there is an issue with setting a lock on a daemon process, and it typically occurs in the context of the SAP background processing system. This error can prevent the system from starting or restarting certain background jobs or processes.
  Cause:
  The error message "Lock on daemon &1 could not be set - no restart" usually arises due to one of the following reasons:
  
  Existing Lock: There may already be an existing lock on the daemon process, which prevents a new lock from being set.
  Daemon Process Not Running: The daemon process that is supposed to be managed may not be running or may have crashed.
  File System Issues: There could be issues with the file system where the lock files are stored, such as permission issues or disk space problems.
  Configuration Issues: Incorrect configuration settings in the SAP system can lead to this error.
  
  Solution:
  To resolve the RSCRT172 error, you can follow these steps:
  
  
  Check Existing Locks:
  
  Use transaction code SM12 to check for existing locks. If you find any locks related to the daemon, you may need to delete them if they are no longer needed.
  
  
  
  Restart the Daemon:
  
  If the daemon process is not running, try to restart it. You can do this using transaction code SM37 to check the status of background jobs and restart any that are necessary.
  
  
  
  Check System Logs:
  
  Review the system logs (transaction code SM21) for any related error messages that might provide more context about why the daemon is not starting or why the lock cannot be set.
  
  
  
  File System Check:
  
  Ensure that the file system where the lock files are stored is accessible and has sufficient space. Check permissions to ensure that the SAP user has the necessary rights to create and manage lock files.
  
  
  
  Configuration Review:
  
  Review the configuration settings for the background processing system to ensure they are correct. This includes checking the settings in transaction SM36 for job scheduling.
  
  
  
  SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates that can resolve the issue.
  
  
  
  System Restart:
  
  If all else fails, consider restarting the entire SAP system, as this can sometimes clear up lingering issues with daemon processes and locks.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM21: System log.
  SM37: Monitor background jobs.
  SM36: Define background jobs.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for more detailed information on background processing and daemon management.
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  
  If the problem persists after trying these solutions, it may be necessary to contact SAP support for further assistance.