How To Fix KX951 - Queue & CPI-C DEALLOCATE Error &

SAP Error Message - Details

• Message type: E = Error

• Message class: KX - EC-EIS/EC-BP: Data basis, data collection

• Message number: 951

• Message text: Queue & CPI-C DEALLOCATE Error &

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 KX951 - Queue & CPI-C DEALLOCATE Error & ?

  The SAP error message KX951, which indicates a "Queue & CPI-C DEALLOCATE Error," typically arises in the context of communication between SAP systems, particularly when using the CPI-C (Common Programming Interface for Communication) protocol. This error can occur due to various reasons, including issues with the communication setup, resource allocation, or system configuration.
  Causes of KX951 Error
  
  Network Issues: Problems with the network connection between the SAP systems can lead to communication failures.
  Resource Limitations: Insufficient resources (like memory or processing power) on the server can cause the system to fail to deallocate resources properly.
  Configuration Errors: Incorrect configuration settings in the SAP system or in the CPI-C setup can lead to this error.
  Session Management: Issues with session management, such as too many open sessions or improper session termination, can trigger this error.
  System Load: High system load or performance issues can lead to timeouts or failures in processing requests.
  
  Solutions to KX951 Error
  
  Check Network Connectivity: Ensure that there are no network issues between the communicating SAP systems. Use tools like ping or traceroute to diagnose connectivity problems.
  Review System Resources: Monitor the system resources (CPU, memory, etc.) to ensure that the server is not overloaded. If necessary, allocate more resources or optimize the current usage.
  Verify Configuration Settings: Check the CPI-C configuration settings in both SAP systems to ensure they are correctly set up. This includes checking the RFC destinations and CPI-C parameters.
  Session Management: Review the session management settings. Ensure that sessions are being properly closed and that the maximum number of sessions is not being exceeded.
  System Logs: Check the SAP system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  Restart Services: Sometimes, simply restarting the relevant services or the entire SAP system can resolve temporary issues.
  SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  Related Information
  
  CPI-C Protocol: Understanding the CPI-C protocol and how it operates within SAP can help in diagnosing communication issues.
  SAP Basis Administration: Familiarity with SAP Basis administration tasks can be beneficial, as many of the solutions involve system configuration and resource management.
  Performance Monitoring: Tools like SAP Solution Manager can be used to monitor system performance and identify bottlenecks that may lead to errors like KX951.
  
  If the issue persists after trying the above solutions, it may be necessary to contact SAP support for further assistance, providing them with detailed logs and error messages to facilitate troubleshooting.