How To Fix SHDB_PFW709 - Unexpected lock error: &1 &2 & 3 &4

SAP Error Message - Details

• Message type: E = Error

• Message class: SHDB_PFW -

• Message number: 709

• Message text: Unexpected lock error: &1 &2 & 3 &4

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SHDB_PFW709 - Unexpected lock error: &1 &2 & 3 &4 ?

  The SAP error message SHDB_PFW709 "Unexpected lock error: &1 &2 &3 &4" typically occurs in the context of SAP's batch input processing, particularly when using transaction recording (SHDB). This error indicates that there is a problem with locking mechanisms in the system, which can prevent the batch input session from executing properly.
  Causes:
  
  Database Locking Issues: The error may arise due to database locks that are not released properly, which can happen if a previous transaction did not complete successfully.
  Concurrent Access: Multiple users or processes trying to access the same data simultaneously can lead to locking conflicts.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing subsequent transactions to fail.
  System Configuration: Misconfiguration in the SAP system or issues with the application server can also lead to unexpected lock errors.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for any existing lock entries. You can delete any unnecessary locks that may be causing the issue.
  Review Batch Input Sessions: Check the batch input sessions in transaction SM35 to see if there are any sessions that are stuck or have errors. You may need to delete or correct these sessions.
  Transaction Monitoring: Monitor the transactions that are causing the locks. Use transaction SM21 to check the system log for any related errors or warnings.
  Increase Timeout Settings: If the issue is related to long-running transactions, consider increasing the timeout settings for the relevant processes.
  System Restart: In some cases, a system restart may be necessary to clear any persistent locks that are not being released.
  Consult Basis Team: If the issue persists, it may be necessary to involve your SAP Basis team to investigate deeper into the system configuration and performance.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM35: Manage batch input sessions.
  SM21: System log for monitoring errors and warnings.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review SAP documentation on batch input processing and locking mechanisms for a better understanding of how to manage and troubleshoot these issues.
  
  If the problem continues after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.