How To Fix CNV20201399 - Generation error for dyn. sub-routine pool; memory problems => long text

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 399

• Message text: Generation error for dyn. sub-routine pool; memory problems => long text

Self-Explanatory Message

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• What is the cause and solution for SAP error message CNV20201399 - Generation error for dyn. sub-routine pool; memory problems => long text ?

  The SAP error message CNV20201399 indicates a generation error for a dynamic subroutine pool, typically related to memory issues during the generation of ABAP programs or function modules. This error can occur in various scenarios, particularly during data migration or system upgrades when large amounts of data or complex programs are involved.
  Cause:
  
  Memory Limitations: The most common cause of this error is that the system has run out of memory while trying to generate the dynamic subroutine pool. This can happen if the ABAP program is too large or if there are too many objects being processed simultaneously.
  Configuration Issues: Incorrect settings in the SAP memory management parameters can lead to insufficient memory allocation for the ABAP runtime environment.
  System Load: High system load or concurrent processing of multiple tasks can exacerbate memory issues.
  
  Solution:
  
  
  Increase Memory Parameters:
  
  You can increase the memory parameters in the SAP system. This can be done by adjusting the following parameters in the instance profile:
  
  abap/heap_area_dia: Increase the size of the dialog process heap.
  abap/heap_area_nondia: Increase the size of the non-dialog process heap.
  
  
  After making changes, restart the SAP instance for the changes to take effect.
  
  
  
  Optimize ABAP Code:
  
  Review the ABAP code for inefficiencies. Look for large internal tables or complex data structures that can be optimized or broken down into smaller parts.
  
  
  
  Check for Locks and Long-Running Processes:
  
  Use transaction codes like SM50 or SM66 to monitor running processes and check for any locks or long-running jobs that may be consuming excessive resources.
  
  
  
  Run in Background:
  
  If the error occurs during a data migration or batch job, consider running the job in the background with a lower priority to reduce the load on the system.
  
  
  
  System Upgrade:
  
  If the issue persists, consider upgrading the hardware or increasing the resources allocated to the SAP system, especially if it is running on a virtual machine.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes: Use transaction codes like ST22 (Dump Analysis) to check for any short dumps related to this error, which can provide more context.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation on memory management and performance tuning for further optimization strategies.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.