How To Fix 14026 - Maximum number of internal sessions has been reached

SAP Error Message - Details

• Message type: E = Error

• Message class: 14 - Task handler messages

• Message number: 026

• Message text: Maximum number of internal sessions has been reached

What causes this issue?

The transaction was cancelled because the maximum number of internal
sessions was exceeded.
Internal sessions are a resource of the SAP kernel that is used by the
application (ABAP program). The error indicates a problem in the running
application.

How to fix this error?

If the application is an ABAP program from SAP, please contact SAP
Support.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 14026 - Maximum number of internal sessions has been reached ?

  The SAP error message 14026, which states "Maximum number of internal sessions has been reached," typically occurs when the system has reached its limit for internal sessions. This can happen in various scenarios, such as when there are too many concurrent users or processes trying to access the system, or when there are long-running transactions that are not being released properly.
  Causes:
  
  High User Load: A large number of users or processes trying to access the system simultaneously can exhaust the available internal sessions.
  Long-Running Transactions: Transactions that take a long time to complete can hold onto internal sessions longer than necessary.
  Configuration Limits: The system may be configured with a low limit for internal sessions, which can be insufficient for the current workload.
  Resource Leaks: Poorly designed custom code or configurations that do not release sessions properly can lead to this issue.
  
  Solutions:
  
  
  Increase the Limit: 
  
  You can increase the maximum number of internal sessions by adjusting the profile parameters. The relevant parameter is rdisp/max_internal_sess. You can change this in the instance profile.
  To do this, go to transaction RZ10, select the appropriate profile, and modify the parameter value. After making changes, restart the instance for the changes to take effect.
  
  
  
  Monitor and Optimize Transactions:
  
  Identify long-running transactions and optimize them to ensure they complete in a timely manner.
  Use transaction SM66 to monitor active processes and identify any that are holding sessions longer than necessary.
  
  
  
  Review Custom Code:
  
  If you have custom ABAP code, review it to ensure that it is not causing session leaks. Ensure that all sessions are properly released after their use.
  
  
  
  Session Management:
  
  Implement better session management practices, such as ensuring that users log off when they are done, and that background jobs are managed effectively.
  
  
  
  System Performance Tuning:
  
  Consider overall system performance tuning, including hardware resources, to ensure that the system can handle the expected load.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM66: To monitor active processes.
  RZ10: To change profile parameters.
  SM50: To view and manage work processes.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  Documentation: Review SAP documentation for best practices on session management and performance tuning.
  
  
  If the problem persists after trying these solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.