How To Fix 14423 - Shared memory error

SAP Error Message - Details

• Message type: E = Error

• Message class: 14 - Task handler messages

• Message number: 423

• Message text: Shared memory 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 14423 - Shared memory error ?

  The SAP error message 14423, which indicates a "Shared Memory Error," typically arises when there are issues related to the shared memory configuration in the SAP system. This can occur due to various reasons, such as insufficient memory allocation, incorrect configuration settings, or issues with the operating system.
  Causes of SAP Error 14423
  
  
  Insufficient Shared Memory Allocation: The shared memory segment may not have enough space allocated for the SAP instance to function properly.
  
  
  Configuration Issues: Incorrect parameters in the instance profile or kernel settings can lead to shared memory errors.
  
  
  Operating System Limits: The operating system may impose limits on the amount of shared memory that can be allocated, which can lead to this error.
  
  
  Kernel Issues: An outdated or incompatible kernel version may also cause shared memory errors.
  
  
  Resource Contention: Other applications or processes may be consuming shared memory resources, leading to insufficient availability for SAP.
  
  
  Solutions to SAP Error 14423
  
  
  Check and Increase Shared Memory Allocation:
  
  Review the shared memory settings in the instance profile (e.g., shmmax, shmall on Unix/Linux systems).
  Increase the shared memory parameters as needed. For example, you can adjust the shmmax parameter to allow for larger shared memory segments.
  
  
  
  Review Instance Profile Settings:
  
  Check the instance profile parameters related to shared memory, such as rdisp/shm_size, and ensure they are set correctly.
  Adjust the parameters to allocate sufficient memory for the SAP instance.
  
  
  
  Operating System Configuration:
  
  On Unix/Linux systems, you may need to modify kernel parameters in /etc/sysctl.conf and apply the changes using sysctl -p.
  Ensure that the operating system's shared memory limits are not being exceeded.
  
  
  
  Update SAP Kernel:
  
  Ensure that you are using a compatible and up-to-date version of the SAP kernel. If necessary, download and apply the latest kernel patch.
  
  
  
  Monitor Resource Usage:
  
  Use monitoring tools to check for other processes that may be consuming shared memory resources. If necessary, terminate or adjust those processes.
  
  
  
  Restart SAP Services:
  
  After making changes to the configuration, restart the SAP instance to apply the new settings.
  
  
  
  Related Information
  
  
  SAP Notes: Check SAP Notes related to shared memory errors for specific guidance and troubleshooting steps. SAP Notes often provide detailed solutions and recommendations based on the version of SAP you are using.
  
  
  Documentation: Refer to the official SAP documentation for your specific version to understand the shared memory configuration and limits.
  
  
  System Logs: Review the system logs (e.g., dev_w0, dev_disp) for additional error messages or warnings that may provide more context about the shared memory error.
  
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with SAP support or your system administrator for further assistance.