How To Fix DT960 - List of dependent lock objects:

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 960

• Message text: List of dependent lock objects:

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT960 - List of dependent lock objects: ?

  The SAP error message DT960, which states "List of dependent lock objects," typically occurs in the context of database locking mechanisms in SAP. This error is related to the use of lock objects in ABAP programs, particularly when there are issues with the locking mechanism that prevents the program from executing as expected.
  Cause:
  
  Lock Object Conflicts: The error can occur when there are conflicts with lock objects that are being used in the program. This can happen if multiple transactions are trying to access the same data simultaneously and the locks are not being managed properly.
  Deadlocks: If two or more processes are waiting for each other to release locks, a deadlock situation can arise, leading to this error.
  Incorrect Lock Object Definition: If the lock objects are not defined correctly in the ABAP Dictionary, it can lead to issues when the program tries to acquire locks.
  Long-Running Transactions: If a transaction holds a lock for an extended period, it can block other transactions, leading to this error.
  
  Solution:
  
  Check Lock Object Definitions: Review the definitions of the lock objects in the ABAP Dictionary (transaction SE11). Ensure that they are correctly defined and that the fields used for locking are appropriate.
  Analyze Lock Entries: Use transaction SM12 to check for existing lock entries. You can identify if there are any locks that are causing conflicts and take appropriate action, such as releasing unnecessary locks.
  Optimize Code: Review the ABAP code to ensure that locks are being acquired and released properly. Avoid holding locks for longer than necessary and ensure that locks are released in all code paths (including error handling).
  Deadlock Resolution: If deadlocks are suspected, consider implementing a retry mechanism in your code to handle such situations gracefully.
  Transaction Management: Ensure that transactions are managed properly, and consider breaking long transactions into smaller units of work if possible.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to this error message.
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE11: Data Dictionary to check lock object definitions.
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors or warnings.
  ST22: To analyze dumps that may provide more context on the error.
  
  
  
  Documentation: Review SAP documentation on lock objects and concurrency control in ABAP to better understand how to manage locks effectively.
  
  
  Performance Monitoring: Use transaction ST04 (Database Performance) to monitor database locks and performance issues.
  
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance.