How To Fix WSAM_SHMAE018 - Last page

SAP Error Message - Details

• Message type: E = Error

• Message class: WSAM_SHMAE - Message class for SRS enhanced mat search and ATP request

• Message number: 018

• Message text: Last page

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 WSAM_SHMAE018 - Last page ?

  The SAP error message WSAM_SHMAE018 Last page typically occurs in the context of SAP Web Application Server (SAP WAS) or SAP NetWeaver when dealing with shared memory areas (SHMARE) or buffer management.
  
  Cause
  
  "Last page" in the message indicates that the system has reached the last page of a shared memory area or buffer segment.
  This usually means that the shared memory area or buffer is full or has reached its configured limit.
  It can happen during operations that require allocation or extension of shared memory pages, such as caching, buffer management, or internal SAP kernel memory handling.
  The error may be triggered by insufficient memory allocation for shared memory areas or by fragmentation.
  
  
  Solution
  
  
  Increase Shared Memory Parameters:
  
  Adjust the SAP kernel parameters related to shared memory size.
  Parameters like ztta/roll_area, abap/heap_area_dia, abap/heap_area_nondia, or specific shared memory parameters in the instance profile may need to be increased.
  For SAP NetWeaver, check parameters related to buffer and shared memory areas in the instance profile or kernel parameters.
  
  
  
  Restart the SAP Instance:
  
  After adjusting parameters, a restart of the SAP instance is usually required to apply changes.
  
  
  
  Check for Memory Leaks or Inefficient Usage:
  
  Analyze if there are any memory leaks or inefficient buffer usage causing the shared memory to fill up.
  Use transaction ST02 (Tune Summary) or ST06 (OS Monitor) to monitor memory usage.
  
  
  
  Apply SAP Notes:
  
  Search for SAP Notes related to WSAM_SHMAE018 or shared memory issues.
  SAP Notes may provide patches or parameter recommendations.
  
  
  
  Kernel Upgrade:
  
  If the issue is caused by a bug in the kernel, upgrading to a newer kernel version may resolve the problem.
  
  
  
  
  Related Information
  
  Transaction ST02: Monitor SAP buffer and shared memory areas.
  Transaction SM51: Check active application servers and their memory usage.
  SAP Notes: Use SAP ONE Support Launchpad to search for WSAM_SHMAE018 or shared memory errors.
  SAP Kernel Parameters: Review and tune parameters related to memory and buffer management.
  SAP Memory Management: Understanding how SAP manages roll areas, heap areas, and shared memory is crucial.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WSAM_SHMAE018 Last page
  
  
  Cause
  Shared memory area or buffer has reached its last page (full or limit reached)
  
  
  Solution
  Increase shared memory parameters, restart instance, check for memory leaks, apply SAP Notes, consider kernel upgrade
  
  
  Tools
  ST02, SM51, SAP Notes, instance profile parameters
  
  
  
  
  If you provide more context (e.g., when the error occurs, system version), I can help with more specific recommendations.