How To Fix RT234 - CCMS Self-monitoring: number of free slots in shared mem. segm. for MTE

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 234

• Message text: CCMS Self-monitoring: number of free slots in shared mem. segm. for MTE

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT234 - CCMS Self-monitoring: number of free slots in shared mem. segm. for MTE ?

  The SAP error message RT234, which pertains to CCMS (Computing Center Management System) self-monitoring, indicates that there is an issue with the number of free slots in the shared memory segment for Monitoring Tree Elements (MTEs). This can occur when the system has reached its limit for monitoring elements, which can lead to performance issues or the inability to monitor certain aspects of the system.
  Cause:
  
  Exceeding Limits: The number of MTEs that can be monitored is limited by the configuration of the shared memory segment. If the number of MTEs exceeds the allocated slots, you will encounter this error.
  Configuration Issues: The configuration settings for the CCMS monitoring might not be optimized for the current workload or system architecture.
  Memory Fragmentation: Over time, memory can become fragmented, leading to inefficient use of available slots.
  
  Solution:
  
  
  Increase Shared Memory Size:
  
  You can increase the size of the shared memory segment allocated for MTEs. This is typically done by adjusting the parameters in the instance profile (e.g., rdisp/Shared_Pool_Size or rdisp/Shared_Memory).
  After making changes, restart the SAP instance for the changes to take effect.
  
  
  
  Optimize MTE Configuration:
  
  Review the configuration of MTEs and remove any unnecessary or redundant monitoring elements that are not needed.
  Ensure that the monitoring settings are aligned with the current system requirements.
  
  
  
  Check for Memory Leaks:
  
  Investigate if there are any memory leaks or issues in the application that could be consuming more memory than necessary.
  
  
  
  Monitor and Analyze:
  
  Use transaction codes like RZ20 or RZ21 to monitor the status of MTEs and analyze the current configuration.
  Check the CCMS monitoring logs for any additional errors or warnings that might provide more context.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes that might address this specific error or provide additional guidance on configuration settings.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  RZ20 - CCMS Monitoring
  RZ21 - CCMS Monitoring Configuration
  SM51 - List of SAP Servers
  
  
  SAP Documentation: Refer to the official SAP Help Portal for detailed documentation on CCMS and memory management.
  SAP Community: Engage with the SAP Community forums for insights and experiences shared by other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the RT234 error and optimize the monitoring capabilities of your SAP system.