How To Fix BRAIN895 - Shared memory overflow while writing cache. Check your memory settings.

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN -

• Message number: 895

• Message text: Shared memory overflow while writing cache. Check your memory settings.

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 BRAIN895 - Shared memory overflow while writing cache. Check your memory settings. ?

  The SAP error message BRAIN895 indicates that there is a shared memory overflow while writing to the cache. This typically occurs when the allocated shared memory for the SAP system is insufficient to handle the current workload or data being processed. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Insufficient Shared Memory Allocation: The shared memory settings in the SAP system may not be configured to handle the volume of data being processed, leading to overflow.
  High Data Volume: A sudden increase in data volume or a large number of concurrent users can lead to memory overflow.
  Configuration Issues: Incorrect configuration of the cache settings or memory parameters in the SAP system can also lead to this error.
  Memory Leaks: There may be memory leaks in the application or in custom code that is consuming more memory than expected.
  
  Solutions
  
  
  Increase Shared Memory Allocation:
  
  Use transaction RZ10 to adjust the profile parameters related to shared memory. The parameters to look for include:
  
  abap/heap_area_total
  abap/heap_area_dia
  abap/heap_area_nondia
  
  
  Increase these values based on the system's requirements and restart the SAP instance.
  
  
  
  Check and Adjust Cache Settings:
  
  Review the cache settings in transaction RSCUSTV10 (for BW systems) or relevant transactions for your specific SAP module.
  Adjust the cache size settings to accommodate the data being processed.
  
  
  
  Monitor System Performance:
  
  Use transaction ST02 to monitor memory usage and identify any bottlenecks or areas where memory is being heavily utilized.
  Analyze the workload and see if there are any specific transactions or processes that are consuming excessive memory.
  
  
  
  Review Custom Code:
  
  If there are custom ABAP programs or enhancements, review them for potential memory leaks or inefficient memory usage.
  Optimize the code to ensure it is not consuming more memory than necessary.
  
  
  
  System Restart:
  
  In some cases, a system restart may help clear temporary memory issues, but this should be a last resort after other solutions have been attempted.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Related Information
  
  SAP Memory Management: Understanding how SAP manages memory can help in configuring the system appropriately. Familiarize yourself with the different memory areas (heap, roll, and paging).
  Performance Tuning: Regularly monitor and tune the performance of your SAP system to prevent memory-related issues.
  Documentation: Refer to the official SAP documentation for detailed information on memory parameters and best practices for configuration.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.