How To Fix FTI_LDB_MESSAGE420 - &1 packages run in serial mode

SAP Error Message - Details

• Message type: E = Error

• Message class: FTI_LDB_MESSAGE - Messages for TR OLTP Reporting Using Logical Databases

• Message number: 420

• Message text: &1 packages run in serial mode

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FTI_LDB_MESSAGE420 - &1 packages run in serial mode ?

  The SAP error message FTI_LDB_MESSAGE420 indicates that a certain number of packages (in this case, &1) are being processed in serial mode rather than in parallel mode. This can lead to performance issues, especially if the system is capable of processing these packages concurrently.
  Cause:
  
  Configuration Settings: The system may be configured to run certain processes in serial mode due to specific settings in the background job configuration or in the application settings.
  Resource Limitations: The system may not have enough resources (like memory or CPU) to run the processes in parallel, leading to a fallback to serial processing.
  Locking Issues: If the packages are dependent on shared resources or data, they may be forced to run in serial mode to avoid conflicts.
  System Constraints: Certain system constraints or limitations may prevent parallel processing, such as database locks or other operational constraints.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the job or process that is generating this error. Ensure that it is set to allow parallel processing if the system resources permit it.
  Increase Resources: If the system is resource-constrained, consider increasing the available resources (CPU, memory) to allow for parallel processing.
  Review Dependencies: Analyze the dependencies between the packages. If they are interdependent, you may need to redesign the process to allow for more parallel execution.
  Adjust Job Parameters: If you are using background jobs, check the job parameters to ensure that they are set to allow parallel execution.
  Monitor System Performance: Use transaction codes like ST03N or ST06 to monitor system performance and identify bottlenecks that may be causing the serial processing.
  Consult Documentation: Refer to SAP documentation or support notes related to the specific transaction or process to see if there are known issues or additional configuration steps required.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM37 (to monitor background jobs) and SM66 (to monitor global work processes) to get insights into how jobs are being processed.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error message or related keywords in the SAP Support Portal.
  Performance Tuning: Consider engaging in performance tuning activities if this issue is recurrent and affects system performance significantly.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.