How To Fix PLMDISCALC049 - Requesting locks

SAP Error Message - Details

• Message type: E = Error

• Message class: PLMDISCALC - Messages for LLC calculation

• Message number: 049

• Message text: Requesting locks

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PLMDISCALC049 - Requesting locks ?

  The SAP error message PLMDISCALC049 typically indicates that there is an issue with requesting locks during the calculation of a planning scenario in SAP's Product Lifecycle Management (PLM) module. This error can occur when multiple users or processes are trying to access or modify the same data simultaneously, leading to a conflict in lock requests.
  Cause:
  
  Concurrent Access: Multiple users or processes are trying to access the same planning data at the same time, leading to a lock contention.
  Long-Running Transactions: A transaction that takes a long time to complete may hold locks longer than expected, causing other requests to fail.
  System Performance Issues: If the system is under heavy load, it may not be able to process lock requests efficiently.
  Configuration Issues: Incorrect configuration of the planning scenarios or the underlying database may lead to locking issues.
  
  Solution:
  
  Check for Active Sessions: Use transaction codes like SM12 to check for active locks and identify if there are any long-running sessions that are holding locks.
  Wait and Retry: If the error is due to temporary contention, waiting for a few moments and then retrying the operation may resolve the issue.
  Optimize Long Transactions: Review and optimize any long-running transactions that may be holding locks unnecessarily.
  Increase System Resources: If the system is under heavy load, consider increasing system resources or optimizing performance to handle concurrent requests better.
  Review Configuration: Ensure that the configuration of the planning scenarios and database settings are correct and optimized for your use case.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view locks), SM21 (to check system logs), and ST22 (to check dumps) for troubleshooting.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation related to PLM and locking mechanisms to understand how locks are managed in your specific version of SAP.
  
  If the issue persists after trying the above solutions, it may be beneficial to involve your SAP Basis team or reach out to SAP support for further assistance.