How To Fix /SCMB/TDL_CONF_MESS017 - SHM LOADER: SHM write attach failed

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/TDL_CONF_MESS -

• Message number: 017

• Message text: SHM LOADER: SHM write 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_MESS017 - SHM LOADER: SHM write attach failed ?

  The SAP error message /SCMB/TDL_CONF_MESS017 SHM LOADER: SHM write attach failed typically indicates an issue related to the Shared Memory (SHM) in the SAP system, particularly in the context of the Supply Chain Management (SCM) module. This error can occur when the system is unable to attach to the shared memory segment, which is necessary for certain operations.
  Causes:
  
  Insufficient Memory: The shared memory segment may not have enough space allocated, or the system may be running low on available memory.
  Configuration Issues: Incorrect configuration settings in the SAP system related to shared memory can lead to this error.
  System Limits: The operating system may have limits on the number of shared memory segments or the size of each segment.
  Locks or Contention: Other processes may be holding locks on the shared memory, preventing new attachments.
  Kernel Issues: There may be bugs or issues in the SAP kernel that affect shared memory handling.
  
  Solutions:
  
  
  Check Memory Allocation:
  
  Review the shared memory settings in the SAP system. You can check the parameters related to shared memory in transaction RZ10 or RZ11.
  Increase the size of the shared memory segment if necessary.
  
  
  
  Adjust Operating System Settings:
  
  On Unix/Linux systems, check the kernel parameters related to shared memory (e.g., shmmax, shmall, shmmni) and adjust them if needed.
  On Windows, ensure that the system has enough virtual memory allocated.
  
  
  
  Restart the SAP System:
  
  Sometimes, a simple restart of the SAP system can resolve temporary issues with shared memory.
  
  
  
  Check for Locks:
  
  Use transaction SM12 to check for any locks that may be preventing access to shared memory. Release any unnecessary locks.
  
  
  
  Review SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve known issues.
  
  
  
  Consult SAP Basis Team:
  
  If the issue persists, it may be necessary to involve your SAP Basis team or SAP support for further investigation and resolution.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  RZ10 and RZ11 for parameter settings.
  SM12 for lock management.
  SM21 for system logs to check for related errors.
  
  
  
  SAP Notes: Always refer to the SAP Support Portal for the latest notes and updates related to your specific SAP version and the error message.
  
  
  Documentation: Review the SAP Help Portal for documentation on shared memory management and configuration.
  
  
  By following these steps, you should be able to diagnose and resolve the /SCMB/TDL_CONF_MESS017 SHM LOADER: SHM write attach failed error in your SAP system.