How To Fix RSM079 - Cannot obtain lock for DTP load switch; termination; DTA &;DS &;LS &

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM -

• Message number: 079

• Message text: Cannot obtain lock for DTP load switch; termination; DTA &;DS &;LS &

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSM079 - Cannot obtain lock for DTP load switch; termination; DTA &;DS &;LS & ?

  The SAP error message RSM079 indicates that there is an issue with obtaining a lock for the Data Transfer Process (DTP) load switch. This typically occurs when multiple processes are trying to access the same DTP simultaneously, leading to a conflict. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Concurrent Execution: The most common cause is that multiple DTP processes are trying to run at the same time, which leads to a locking conflict.
  Long-Running Processes: If a DTP is taking a long time to complete, it may hold the lock longer than expected, preventing other processes from obtaining the lock.
  System Performance Issues: High system load or performance issues can also lead to delays in lock acquisition.
  Configuration Issues: Incorrect configuration of the DTP or the underlying data sources can lead to locking issues.
  
  Solutions:
  
  Check Running Processes: Use transaction codes like SM37 to check for any running or stuck DTP processes. If you find any, you may need to terminate them if they are not progressing.
  Wait and Retry: If the DTP is running as expected but taking longer than usual, you may need to wait for it to complete before starting another load.
  Adjust Load Scheduling: If you frequently encounter this issue, consider adjusting the scheduling of your DTPs to avoid concurrent execution.
  Increase Timeout Settings: If applicable, you can increase the timeout settings for DTPs to allow longer-running processes to complete without causing lock issues.
  Check for System Performance: Monitor system performance and resource usage. If the system is under heavy load, consider optimizing performance or scheduling jobs during off-peak hours.
  Review DTP Configuration: Ensure that the DTP is configured correctly and that there are no issues with the source or target systems.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like RSMO (for monitoring DTPs) and SM12 (for checking and managing locks).
  SAP Notes: Check SAP Notes for any known issues or patches related to DTP locking problems. You can search for relevant notes in the SAP Support Portal.
  Documentation: Review SAP documentation on DTPs and data loading processes for best practices and troubleshooting tips.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.