How To Fix C_057 - Lock error during table access, restart queue

SAP Error Message - Details

• Message type: E = Error

• Message class: C_ - CRM Integration Messages

• Message number: 057

• Message text: Lock error during table access, restart queue

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message C_057 - Lock error during table access, restart queue ?

  The SAP error message C_057, which indicates a "Lock error during table access, restart queue," typically occurs when there is a conflict in accessing a database table due to locking mechanisms. This can happen in various scenarios, such as when multiple users or processes are trying to access or modify the same data simultaneously.
  Causes:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same table or record at the same time, leading to a lock conflict.
  Long-Running Transactions: A transaction that takes too long to complete can 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, resulting in a deadlock.
  Database Configuration: Improper database settings or configurations can lead to locking issues.
  Network Issues: Temporary network issues can cause transactions to fail, leading to lock errors.
  
  Solutions:
  
  Retry the Operation: Often, simply retrying the operation after a short wait can resolve the issue, especially if it was caused by a temporary lock.
  Check for Long-Running Transactions: Use transaction codes like SM12 (to view locks) and SM21 (to check system logs) to identify any long-running transactions that may be holding locks.
  Analyze Lock Entries: Use transaction SM12 to check for existing lock entries. If you find unnecessary locks, you can delete them (if you have the necessary authorizations).
  Optimize Transactions: Review and optimize the code or processes that are causing long locks. Ensure that transactions are kept as short as possible.
  Increase Lock Timeout: If applicable, consider increasing the lock timeout settings in the database configuration, but this should be done with caution.
  Database Maintenance: Regularly perform database maintenance tasks to ensure optimal performance and reduce locking issues.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to this error.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To view system logs for error messages.
  ST22: To check for dumps that may provide more context on the error.
  
  
  SAP Documentation: Refer to SAP Help documentation for detailed information on locking mechanisms and best practices.
  Performance Monitoring: Use transaction ST03N to analyze performance and identify any bottlenecks that may be causing locking issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.