How To Fix RT878 - SAP buffer: Export/import to Shared Memory

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 878

• Message text: SAP buffer: Export/import to Shared Memory

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT878 - SAP buffer: Export/import to Shared Memory ?

  The SAP error message RT878, which refers to issues with the SAP buffer related to export/import to shared memory, typically indicates a problem with the SAP memory management system. This error can occur in various scenarios, often related to the configuration of the SAP system or issues with the underlying operating system.
  Causes:
  
  Memory Configuration Issues: The shared memory settings in the SAP system may not be configured correctly, leading to insufficient memory allocation for the buffers.
  Operating System Limits: The operating system may impose limits on shared memory segments, which can prevent SAP from allocating the necessary memory.
  Kernel Parameters: Incorrect kernel parameters on the server can lead to issues with memory allocation.
  SAP Kernel Bugs: There may be bugs in the SAP kernel that affect memory management.
  High Load: A high load on the SAP system can lead to contention for shared memory resources.
  
  Solutions:
  
  
  Check Memory Configuration:
  
  Review the SAP memory settings in the instance profile (e.g., abap/heap_area_total, abap/heap_area_dia, etc.) and adjust them as necessary.
  Ensure that the shared memory settings are appropriate for your system's workload.
  
  
  
  Operating System Configuration:
  
  Check the operating system's shared memory settings. For example, on Unix/Linux systems, you may need to adjust parameters like shmmax, shmmin, shmmni, and shmseg.
  Use commands like ipcs -lm to check the current limits and sysctl to modify them if necessary.
  
  
  
  Kernel Parameters:
  
  Review and adjust kernel parameters related to memory management. This may involve consulting your system administrator or documentation specific to your operating system.
  
  
  
  Update SAP Kernel:
  
  Ensure that you are using the latest version of the SAP kernel. If you are running an outdated version, consider applying the latest patches or updates.
  
  
  
  Monitor System Load:
  
  Monitor the system load and performance. If the system is under heavy load, consider optimizing the workload or scaling resources.
  
  
  
  Restart SAP Services:
  
  In some cases, restarting the SAP instance or the entire server may resolve temporary memory allocation issues.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RT878 for specific guidance and troubleshooting steps. SAP Notes often provide detailed solutions and workarounds for known issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  System Logs: Review system logs (e.g., dev_w0, dev_r0) for additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.