How To Fix RD422 - Error when locking: Query data transfer canceled

SAP Error Message - Details

• Message type: E = Error

• Message class: RD - CO-PA Connection to SAP BW

• Message number: 422

• Message text: Error when locking: Query data transfer canceled

Self-Explanatory Message

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• What is the cause and solution for SAP error message RD422 - Error when locking: Query data transfer canceled ?

  The SAP error message RD422, which states "Error when locking: Query data transfer canceled," typically occurs in the context of data transfer processes, particularly when dealing with SAP BW (Business Warehouse) or SAP HANA systems. This error indicates that there was an issue with locking mechanisms during the data transfer process, which can lead to the cancellation of the query or data load.
  Causes of RD422 Error
  
  
  Lock Conflicts: The error often arises due to conflicts in locking mechanisms. If another process is holding a lock on the data that your query or data transfer is trying to access, it can lead to this error.
  
  
  Long Running Queries: If a query takes too long to execute, it may time out and cause the data transfer to be canceled.
  
  
  System Performance Issues: High system load or performance issues can lead to timeouts or failures in data transfer processes.
  
  
  Network Issues: Connectivity problems between the SAP system and the data source or target can also lead to this error.
  
  
  Configuration Issues: Incorrect settings in the data transfer process or in the BW system can lead to locking issues.
  
  
  Solutions to RD422 Error
  
  
  Check for Lock Conflicts:
  
  Use transaction code SM12 to check for existing locks. If you find locks that are blocking your process, you may need to release them if they are no longer needed.
  
  
  
  Optimize Queries:
  
  Review the queries that are running and optimize them to ensure they execute more quickly. This may involve indexing, reducing the amount of data being processed, or simplifying the query logic.
  
  
  
  Monitor System Performance:
  
  Use transaction codes like ST03N or SM66 to monitor system performance and identify any bottlenecks. Address any performance issues that may be affecting data transfer.
  
  
  
  Increase Timeout Settings:
  
  If the query is timing out, consider increasing the timeout settings in the relevant configuration. This can often be done in the BW settings or in the data transfer process settings.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues affecting the connection between the SAP system and the data source or target.
  
  
  
  Review Configuration:
  
  Check the configuration of the data transfer process to ensure that it is set up correctly. This includes verifying the source and target settings, as well as any transformation rules.
  
  
  
  Restart the Process:
  
  Sometimes, simply restarting the data transfer process can resolve transient issues.
  
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to check locks), ST22 (to check dumps), SM37 (to monitor job status), and RSRT (to execute queries).
  SAP Notes: Check SAP Notes for any known issues or patches related to the RD422 error. SAP frequently updates its knowledge base with solutions to common problems.
  Documentation: Review SAP documentation related to data transfer processes and locking mechanisms for more detailed guidance.
  
  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.