How To Fix RSOS_SEARCH239 - Search performance might be slowed due to small application buffer memory

SAP Error Message - Details

• Message type: E = Error

• Message class: RSOS_SEARCH -

• Message number: 239

• Message text: Search performance might be slowed due to small application buffer memory

What causes this issue?

Usually all the data, which is required to run a search query and which
is generated when a search query is run, is stored in the shared memory
of the application server. This improves the performance of the BW
search in the SAP HANA application when the search is called multiple
times.
Currently the BW search on the SAP HANA application cannot store all the
generated data required in the shared memory of the application server.
This forces the application to always read all required data from the
database<(>,<)> every time a search query is executed.

System Response

The performance of the search query might be slowed, because reading the
required data from database tables takes longer than retrieving the data
from the shared memory of the application server.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

The application buffer can be filled to an internal maximum limit, which
can be adjusted using the profile parameter rsdb/obj/buffersize (SHARED
BUFFER).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSOS_SEARCH239 - Search performance might be slowed due to small application buffer memory ?

  The SAP error message RSOS_SEARCH239 indicates that the search performance in the SAP system might be degraded due to insufficient application buffer memory. This typically occurs when the buffer memory allocated for the application is too small to handle the volume of data being processed, leading to slower search operations.
  Cause:
  
  Insufficient Buffer Size: The application buffer memory is not adequately sized to handle the data load, which can lead to performance issues.
  High Data Volume: A large volume of data being processed or searched can exceed the current buffer capacity.
  Configuration Issues: The system may not be optimally configured for the specific workload or data characteristics.
  
  Solution:
  
  
  Increase Buffer Size:
  
  You can increase the size of the application buffer memory. This is typically done in the SAP system configuration settings.
  Navigate to the relevant configuration settings in the SAP GUI (Transaction code: RZ10 for profile parameters).
  Look for parameters related to buffer sizes, such as abap/buffersize or similar, and increase their values as needed.
  After making changes, you will need to restart the SAP system for the changes to take effect.
  
  
  
  Monitor Performance:
  
  Use transaction codes like ST02 (Buffer Monitor) to monitor the buffer performance and identify if the changes have improved the situation.
  Analyze the workload and data access patterns to ensure that the buffer is appropriately sized for current and future needs.
  
  
  
  Optimize Queries:
  
  Review and optimize the queries or search operations that are causing performance issues. This may involve indexing, adjusting search parameters, or refining the data model.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may provide additional guidance or patches related to this error message.
  
  
  
  Engage SAP Support:
  
  If the issue persists after making adjustments, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like ST02, RZ10, and SM37 for monitoring and adjusting system performance.
  SAP Documentation: Refer to the official SAP documentation for detailed instructions on buffer management and performance tuning.
  Performance Tuning: Regularly review system performance and adjust configurations as necessary to accommodate changes in data volume and user activity.
  
  By addressing the buffer memory size and optimizing the system configuration, you can improve search performance and mitigate the impact of the RSOS_SEARCH239 error message.