How To Fix CAWUSL556 - Too less internal sessions available! Results might be wrong!

SAP Error Message - Details

• Message type: E = Error

• Message class: CAWUSL - Message Class for Generic Table Browser

• Message number: 556

• Message text: Too less internal sessions available! Results might be wrong!

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CAWUSL556 - Too less internal sessions available! Results might be wrong! ?

  The SAP error message CAWUSL556 indicates that there are too few internal sessions available for processing requests. This can lead to incorrect results or incomplete processing of tasks within the SAP system. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Session Limit Reached: The system has a predefined limit on the number of internal sessions that can be opened simultaneously. If this limit is reached, new requests may not be processed correctly.
  High Load: A sudden increase in workload or a large number of concurrent users can exhaust the available sessions.
  Configuration Issues: The system may not be configured to handle the expected load, leading to insufficient session availability.
  Long-Running Processes: If there are processes that take a long time to complete, they may hold onto sessions longer than necessary, reducing the number of available sessions for new requests.
  
  Solutions:
  
  
  Increase Session Limits:
  
  You can increase the number of internal sessions allowed in the system. This can be done by adjusting the profile parameters in the SAP system.
  The relevant parameter is rdisp/max_wprun_time or rdisp/max_sess. Consult with your SAP Basis administrator to make these changes.
  
  
  
  Monitor and Optimize Processes:
  
  Identify long-running processes and optimize them to reduce their execution time.
  Use transaction codes like ST22 (Dump Analysis) and SM21 (System Log) to analyze any issues that may be causing delays.
  
  
  
  Load Balancing:
  
  If your system is under heavy load, consider implementing load balancing to distribute the workload more evenly across multiple application servers.
  
  
  
  Session Management:
  
  Regularly monitor session usage and implement session management practices to ensure that sessions are released when no longer needed.
  
  
  
  System Performance Tuning:
  
  Conduct a performance analysis of the system to identify bottlenecks and optimize the overall performance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  Documentation: Review SAP documentation for best practices on session management and system performance tuning.
  
  Conclusion:
  The CAWUSL556 error indicates a critical issue with session availability in your SAP system. By increasing session limits, optimizing processes, and monitoring system performance, you can mitigate this issue and ensure that your SAP environment runs smoothly. Always consult with your SAP Basis team before making changes to system configurations.