How To Fix RT235 - Only &1 free slots in shared memory segments for MTE (threshold &2 slots)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 235

• Message text: Only &1 free slots in shared memory segments for MTE (threshold &2 slots)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT235 - Only &1 free slots in shared memory segments for MTE (threshold &2 slots) ?

  The SAP error message RT235 indicates that there are insufficient free slots in the shared memory segments for Monitoring and Threshold Events (MTE). This typically occurs when the number of MTEs being monitored exceeds the available slots in the shared memory.
  Cause:
  
  Insufficient Memory Allocation: The shared memory segments allocated for MTEs are not sufficient to handle the current load.
  High Number of MTEs: The system is monitoring more MTEs than the configured slots can accommodate.
  Configuration Issues: The parameters for shared memory allocation may not be set correctly in the SAP system.
  
  Solution:
  
  
  Increase Shared Memory Allocation:
  
  You can increase the number of slots available for MTEs by adjusting the relevant parameters in the SAP system.
  Use transaction code RZ10 to modify the instance profile parameters. Look for parameters related to shared memory, such as rdisp/memory or rdisp/Shared_Memory.
  You may need to increase the rdisp/memory parameter to allocate more memory for MTEs.
  
  
  
  Adjust MTE Configuration:
  
  Review the configuration of MTEs to ensure that only necessary MTEs are being monitored. You can deactivate or delete unnecessary MTEs to free up slots.
  
  
  
  Restart the SAP System:
  
  After making changes to the configuration, you may need to restart the SAP system for the changes to take effect.
  
  
  
  Monitor Memory Usage:
  
  Use transaction SMEM to monitor the memory usage and ensure that the changes have resolved the issue.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  RZ10: Profile maintenance for changing instance parameters.
  SMEM: Memory management overview.
  RZ20: Monitoring of MTEs and alerts.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on memory management and MTE configuration.
  
  
  Performance Considerations: Increasing memory allocation can improve performance, but it is essential to monitor the overall system performance and adjust accordingly.
  
  
  By following these steps, you should be able to resolve the RT235 error and ensure that your SAP system can handle the required number of MTEs effectively.