How To Fix D4416 - SAP/OS400 roll mgmt. internal: User management-shared memory segment size

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 416

• Message text: SAP/OS400 roll mgmt. internal: User management-shared memory segment size

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D4416 - SAP/OS400 roll mgmt. internal: User management-shared memory segment size ?

  The SAP error message D4416, which pertains to "SAP/OS400 roll management internal: User management - shared memory segment size," typically indicates an issue with the configuration of shared memory segments in the SAP system running on the OS/400 platform (IBM iSeries).
  Cause:
  The error usually arises due to one of the following reasons:
  
  Insufficient Shared Memory: The size of the shared memory segment allocated for user management is not sufficient to handle the current workload or number of users.
  Configuration Issues: The parameters for shared memory allocation may not be set correctly in the SAP system configuration.
  System Limits: The operating system may have limits on the size of shared memory segments that are being exceeded.
  
  Solution:
  To resolve the D4416 error, you can take the following steps:
  
  
  Increase Shared Memory Size:
  
  Check the current configuration of shared memory parameters in the SAP system.
  Increase the size of the shared memory segment allocated for user management. This can typically be done in the instance profile (e.g., DEFAULT.PFL or instance-specific profile) by adjusting the parameters related to shared memory.
  
  
  
  Adjust OS/400 Settings:
  
  Review the operating system settings for shared memory limits. You may need to adjust these settings to allow for larger shared memory segments.
  Consult the IBM iSeries documentation for guidance on how to modify these settings.
  
  
  
  Restart the SAP System:
  
  After making changes to the configuration, restart the SAP instance to apply the new settings.
  
  
  
  Monitor System Performance:
  
  After resolving the issue, monitor the system performance and user management to ensure that the changes have effectively addressed the problem.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to shared memory management and the specific error code D4416 for any additional recommendations or patches.
  Documentation: Refer to the SAP Basis documentation for detailed information on configuring shared memory and managing system parameters.
  Support: If the issue persists after making the necessary adjustments, consider reaching out to SAP support for further assistance.
  
  Conclusion:
  The D4416 error is primarily related to shared memory configuration in an SAP system on OS/400. By increasing the shared memory size and ensuring proper configuration, you can typically resolve this issue. Always ensure to back up configurations before making changes and consult relevant documentation for your specific SAP version and environment.