How To Fix /SCMB/TDL_CONF_MESS015 - SHM BROKER: SHM read attach failed

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/TDL_CONF_MESS -

• Message number: 015

• Message text: SHM BROKER: SHM read attach failed

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 /SCMB/TDL_CONF_MESS015 - SHM BROKER: SHM read attach failed ?

  The SAP error message /SCMB/TDL_CONF_MESS015 SHM BROKER: SHM read attach failed typically indicates an issue with the Shared Memory (SHM) broker in the SAP system. This error can occur in various scenarios, particularly when there are problems with the configuration or the state of the shared memory segments used by the SAP application.
  Causes:
  
  Memory Configuration Issues: The shared memory segments may not be properly configured or allocated, leading to read failures.
  Insufficient Memory: The system may not have enough memory allocated for the shared memory segments, causing the read operation to fail.
  System Resource Limits: Operating system limits on shared memory segments may be reached, preventing the SAP system from attaching to the shared memory.
  Corrupted Shared Memory: If the shared memory segments are corrupted or not properly initialized, it can lead to read failures.
  SAP Kernel Issues: Bugs or issues in the SAP kernel version being used may also lead to this error.
  
  Solutions:
  
  
  Check Memory Configuration:
  
  Review the shared memory configuration in the SAP system. Ensure that the parameters related to shared memory (like shmmax, shmmin, shmall, etc.) are set correctly in the operating system.
  Use transaction RZ10 to check and adjust the relevant SAP parameters.
  
  
  
  Increase Memory Allocation:
  
  If the system is running low on memory, consider increasing the memory allocation for the SAP instance. This can be done by adjusting the instance profile parameters.
  
  
  
  Check Operating System Limits:
  
  On Unix/Linux systems, check the limits for shared memory using commands like ipcs -lm to see the maximum allowed shared memory settings.
  Adjust the kernel parameters in /etc/sysctl.conf or using sysctl commands to increase shared memory limits.
  
  
  
  Restart the SAP Instance:
  
  Sometimes, simply restarting the SAP instance can resolve transient issues with shared memory.
  
  
  
  Check for Kernel Updates:
  
  Ensure that you are using a stable and supported version of the SAP kernel. If there are known issues with the current version, consider applying patches or updates.
  
  
  
  Review Logs:
  
  Check the SAP system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance. Provide them with detailed logs and system information to help diagnose the problem.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the SAP documentation related to shared memory configuration and management for your specific SAP version.
  Community Forums: Check SAP Community forums for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to diagnose and resolve the /SCMB/TDL_CONF_MESS015 SHM BROKER: SHM read attach failed error in your SAP system.