How To Fix /SCMB/ESA_EMULATION022 - Not all locks obtained; action cancelled

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/ESA_EMULATION -

• Message number: 022

• Message text: Not all locks obtained; action cancelled

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMB/ESA_EMULATION022 - Not all locks obtained; action cancelled ?

  The SAP error message /SCMB/ESA_EMULATION022 Not all locks obtained; action cancelled typically occurs in the context of the SAP Supply Chain Management (SCM) module, particularly when dealing with the execution of certain actions that require exclusive locks on specific data objects. This error indicates that the system was unable to obtain all the necessary locks to proceed with the requested action, leading to the cancellation of that action.
  Causes:
  
  
  Concurrent Access: The most common cause of this error is that another process or user is currently accessing the same data objects that the action is trying to lock. This can happen in environments with high concurrency where multiple users or processes are trying to perform actions on the same data simultaneously.
  
  
  Lock Table Overflow: If the lock table is full, the system may not be able to obtain the necessary locks. This can occur if there are too many locks being held by various processes.
  
  
  Long-Running Transactions: If a transaction is taking too long to complete, it may hold locks for an extended period, preventing other transactions from obtaining the necessary locks.
  
  
  Configuration Issues: There may be configuration settings in the SCM system that affect how locks are managed or released.
  
  
  Solutions:
  
  
  Check for Active Sessions: Use transaction codes like SM12 to check for active locks. If you find that a particular user or process is holding locks that are preventing your action, you may need to wait for that process to complete or coordinate with the user to release the locks.
  
  
  Increase Lock Table Size: If the lock table is frequently full, consider increasing its size. This can be done by adjusting the parameters in the SAP system configuration.
  
  
  Optimize Long-Running Transactions: Review and optimize any long-running transactions that may be holding locks for too long. This may involve improving the performance of the transaction or breaking it into smaller, more manageable parts.
  
  
  Retry the Action: Sometimes, simply retrying the action after a short wait can resolve the issue, especially if it was caused by a temporary lock held by another process.
  
  
  Review System Logs: Check the system logs for any additional error messages or warnings that may provide more context about the locking issue.
  
  
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error message or provide guidance on best practices for managing locks in SCM.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view and manage locks), SM21 (to view system logs), and ST22 (to check for dumps) for troubleshooting.
  SAP Documentation: Refer to the official SAP documentation for SCM and locking mechanisms to understand how locks are managed and best practices for avoiding lock contention.
  Performance Monitoring: Implement performance monitoring tools to keep track of long-running transactions and lock contention issues in your SAP environment.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance.