How To Fix /SAPAPO/CURTO095 - Dead Lock occurred. Resend necessary.

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CURTO -

• Message number: 095

• Message text: Dead Lock occurred. Resend necessary.

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 /SAPAPO/CURTO095 - Dead Lock occurred. Resend necessary. ?

  The SAP error message /SAPAPO/CURTO095 Dead Lock occurred. Resend necessary typically indicates that a deadlock situation has occurred in the SAP Advanced Planning and Optimization (APO) system. A deadlock happens when two or more processes are waiting for each other to release resources, causing them to be stuck indefinitely.
  Causes:
  
  Concurrent Processes: Multiple processes trying to access the same resources simultaneously can lead to deadlocks.
  Long-Running Transactions: If a transaction holds locks for an extended period, it can increase the likelihood of deadlocks.
  Database Locking: The way the database handles locks can contribute to deadlocks, especially if there are complex queries or updates.
  Poorly Designed Code: Custom code or poorly optimized queries can lead to situations where deadlocks are more likely to occur.
  
  Solutions:
  
  Resend the Request: As the error message suggests, the immediate solution is to resend the request that caused the deadlock.
  Analyze Lock Situations: Use transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) to analyze the locks and identify the processes involved in the deadlock.
  Optimize Code: Review and optimize any custom code or queries that may be contributing to the deadlock situation.
  Reduce Lock Duration: Ensure that transactions are kept as short as possible to minimize the time locks are held.
  Implement Retry Logic: If the application allows, implement a retry mechanism for operations that may encounter deadlocks.
  Database Tuning: Work with your database administrator to tune the database settings and optimize performance to reduce the likelihood of deadlocks.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to deadlocks in your version of SAP APO.
  
  Related Information:
  
  Monitoring Tools: Use SAP monitoring tools to keep an eye on system performance and identify potential deadlock situations before they occur.
  Documentation: Refer to SAP documentation for best practices in managing locks and transactions in SAP APO.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users who may have faced similar issues.
  
  If the problem persists, it may be beneficial to engage SAP support for further assistance, especially if it is impacting business operations significantly.