How To Fix GT828 - Maximum number of subroutine pools reached

SAP Error Message - Details

• Message type: E = Error

• Message class: GT - Database utilities

• Message number: 828

• Message text: Maximum number of subroutine pools reached

What causes this issue?

ABAP programs are generated and object code is generated in main memory
for different purposes. The number of these programs, however, is
limited.

System Response

This task cannot be performed.

How to fix this error?

In most cases the program or transaction only has to be restarted or is
restarted automatically.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GT828 - Maximum number of subroutine pools reached ?

  The SAP error message GT828, which states "Maximum number of subroutine pools reached," typically occurs when the system has reached the limit of subroutine pools that can be created in the ABAP runtime environment. This can happen in scenarios where there are many programs or function modules that are being executed concurrently, leading to an exhaustion of available subroutine pools.
  Cause:
  
  Excessive Subroutine Pools: Each ABAP program or function module can create its own subroutine pool. If there are too many active programs or function modules, the system can run out of available subroutine pools.
  Long-Running Transactions: Long-running transactions that do not release their subroutine pools can contribute to this issue.
  Memory Leaks: Inefficient coding practices or memory leaks in ABAP programs can lead to subroutine pools not being released properly.
  
  Solution:
  
  Review and Optimize Code: Check the ABAP code for any unnecessary subroutine pools being created. Optimize the code to reduce the number of subroutine pools.
  Increase the Limit: If necessary, you can increase the limit of subroutine pools in the system profile parameters. This is done by adjusting the parameter abap/num_subrc in the instance profile. However, this should be done with caution and typically requires consultation with your SAP Basis team.
  Monitor and Manage Long-Running Transactions: Identify and manage long-running transactions that may be holding onto subroutine pools. Consider optimizing these transactions or breaking them into smaller, more manageable parts.
  Restart the Application Server: In some cases, restarting the application server can help clear out the subroutine pools and resolve the issue temporarily.
  Check for Memory Leaks: Use transaction ST22 (Dump Analysis) and SM21 (System Log) to check for any dumps or logs that indicate memory leaks or other issues in the ABAP programs.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  Transaction Codes: Use transaction codes like ST02 (Tune Summary), ST03 (Workload Analysis), and SM37 (Job Monitoring) to analyze system performance and identify problematic areas.
  Performance Tuning: Regularly perform performance tuning and code reviews to ensure that your ABAP programs are efficient and do not consume excessive resources.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.