How To Fix MC655 - Lock object & is consistent

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 655

• Message text: Lock object & is consistent

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MC655 - Lock object & is consistent ?

  The SAP error message MC655 typically indicates that there is a lock conflict related to a lock object in the system. This error can occur in various scenarios, particularly when multiple users or processes are trying to access or modify the same data simultaneously.
  Cause:
  The error message MC655 usually arises due to the following reasons:
  
  
  Lock Conflicts: Another user or process has locked the object you are trying to access. This can happen in transaction processing where multiple users are trying to update the same data.
  
  
  Long-running Transactions: If a transaction takes too long to complete, it can hold locks for an extended period, leading to conflicts with other transactions.
  
  
  Incorrect Lock Management: Sometimes, the application logic may not handle locks properly, leading to unnecessary locking of objects.
  
  
  Database Issues: In some cases, database-level locks can also contribute to this error.
  
  
  Solution:
  To resolve the MC655 error, you can take the following steps:
  
  
  Identify the Lock: Use transaction code SM12 to check for existing locks. You can see which user or process is holding the lock on the object in question.
  
  
  Release the Lock: If you identify a lock that is no longer needed (e.g., a user has left a transaction open), you can manually delete the lock entry from SM12. However, be cautious when doing this, as it may lead to data inconsistencies.
  
  
  Check for Long-running Transactions: Review the transactions that are taking a long time to complete. If possible, optimize these transactions to reduce the time they hold locks.
  
  
  Review Application Logic: If the error is frequent, review the application logic to ensure that locks are being managed correctly. Ensure that locks are released as soon as they are no longer needed.
  
  
  Increase Lock Timeout: If appropriate, you can consider increasing the lock timeout settings in the system configuration, but this should be done with caution as it may lead to other issues.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or patches that may address this specific error or related issues.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors or warnings.
  ST22: To analyze dumps that may provide more context on the error.
  
  
  
  Lock Objects: In SAP, lock objects are used to manage concurrent access to data. They ensure data integrity by preventing multiple users from modifying the same data simultaneously.
  
  
  Performance Monitoring: Regularly monitor system performance and lock situations to prevent future occurrences of this error.
  
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.