How To Fix /SAPAPO/SCC147 - Database lock for model & cannot be set

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SCC -

• Message number: 147

• Message text: Database lock for model & cannot be set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SCC147 - Database lock for model & cannot be set ?

  The SAP error message /SAPAPO/SCC147 Database lock for model & cannot be set typically occurs in the SAP Advanced Planning and Optimization (APO) module when there is an attempt to access or modify a model that is currently locked in the database. This can happen for various reasons, such as concurrent processes trying to access the same model or a previous process not releasing the lock properly.
  Causes:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same model simultaneously.
  Unreleased Locks: A previous transaction or process that accessed the model did not release the lock, possibly due to an error or abrupt termination.
  Long-Running Transactions: A long-running transaction may hold the lock for an extended period, preventing other processes from accessing the model.
  Database Issues: There may be underlying database issues that are causing locks to not be released properly.
  
  Solutions:
  
  Wait and Retry: If the lock is temporary, waiting for a few moments and then retrying the operation may resolve the issue.
  Identify and Terminate Blocking Processes:
  
  Use transaction codes like SM12 (to view and manage locks) to identify which user or process is holding the lock.
  If necessary, you can terminate the blocking process, but be cautious as this may lead to data inconsistency.
  
  
  Check for Long-Running Transactions: Use transaction codes like SM66 or SM50 to monitor active processes and identify any long-running transactions that may be holding locks.
  Database Administration: If the issue persists, it may require intervention from your database administrator to check for any underlying database issues or to clear locks that are not being released.
  Review Custom Code: If there are custom programs or enhancements that interact with the model, review them to ensure they are handling locks properly.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage database locks.
  SM66: To monitor all active processes in the system.
  SM50: To view the processes running on a specific application server.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  Documentation: Review the SAP APO documentation for best practices on managing models and understanding locking mechanisms.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.