How To Fix RM167 - System locking error

SAP Error Message - Details

• Message type: E = Error

• Message class: RM - Messages for Repetitive Manufacturing

• Message number: 167

• Message text: System locking error

What causes this issue?

The blocking of objects failed as a system error occurred.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Try to execute the function again later.
If necessary, inform your system administration.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RM167 - System locking error ?

  The SAP error message RM167, which indicates a "System locking error," typically occurs when there is an issue with the locking mechanism in the SAP system. This can happen in various scenarios, such as during data processing, updates, or when multiple users are trying to access the same data simultaneously.
  Causes of RM167 System Locking Error:
  
  Concurrent Access: Multiple users or processes trying to access or modify the same data simultaneously can lead to locking conflicts.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold locks longer than necessary, causing other transactions to fail.
  Deadlocks: Situations where two or more transactions are waiting for each other to release locks can lead to deadlocks, resulting in locking errors.
  Database Issues: Problems with the underlying database, such as performance issues or configuration problems, can also lead to locking errors.
  Configuration Issues: Incorrect configuration of the SAP system or database settings can lead to locking problems.
  
  Solutions to RM167 System Locking Error:
  
  Identify the Lock: Use transaction code SM12 to check for existing locks. You can see which users or processes are holding locks and release them if necessary.
  Analyze Long-Running Transactions: Use transaction code SM66 or SM50 to monitor active processes and identify any long-running transactions that may be causing locks.
  Optimize Transactions: Review and optimize the code or processes that are causing locking issues. Ensure that transactions are as short as possible and avoid unnecessary locks.
  Increase Lock Timeout: If appropriate, consider increasing the lock timeout settings in the SAP system to allow longer wait times for locks to be released.
  Database Tuning: Work with your database administrator to ensure that the database is properly tuned and configured to handle concurrent access efficiently.
  Check for Deadlocks: Use transaction code SM21 to check the system log for deadlock situations and analyze the root cause.
  User Training: Educate users on best practices for accessing and modifying data to minimize locking conflicts.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RM167 for specific guidance and updates from SAP regarding this error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  System Monitoring: Regularly monitor system performance and locking behavior to proactively address potential issues before they escalate.
  
  If the problem persists after trying the above solutions, it may be necessary to involve SAP support for further investigation and assistance.