How To Fix RSDD_ZA099 - Increase shared memory of BW Accelerator

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 099

• Message text: Increase shared memory of BW Accelerator

What causes this issue?

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

System Response

How to fix this error?

The percentage utilization of the shared memory in the SAP NetWeaver BW
Accelerator could not be optimized automatically. Manually increase the
shared memory on all blades. Contact your system administrator for more
information.
For more information, see SAP Notes 991567 and 997772.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD_ZA099 - Increase shared memory of BW Accelerator ?

  The SAP error message RSDD_ZA099, which indicates that you need to increase the shared memory of the BW Accelerator, typically arises when the BW Accelerator (BWA) does not have enough shared memory allocated to handle the current workload or data processing requirements. This can occur during data loading, query execution, or when performing other operations that require significant memory resources.
  Cause:
  
  Insufficient Memory Allocation: The BW Accelerator has a limit on the amount of shared memory it can use, and if the workload exceeds this limit, the error will occur.
  High Data Volume: Large datasets or complex queries can require more memory than is currently allocated.
  Configuration Issues: The configuration settings for the BW Accelerator may not be optimized for the current usage patterns.
  
  Solution:
  To resolve the RSDD_ZA099 error, you can take the following steps:
  
  
  Increase Shared Memory Allocation:
  
  Access the configuration settings of the BW Accelerator.
  Increase the shared memory allocation. This typically involves modifying the configuration files or settings in the BWA administration console.
  Restart the BW Accelerator service to apply the changes.
  
  
  
  Monitor Memory Usage:
  
  Use monitoring tools to check the current memory usage of the BW Accelerator.
  Identify any queries or processes that are consuming excessive memory and optimize them if possible.
  
  
  
  Optimize Queries:
  
  Review and optimize the queries that are being executed. This may involve simplifying complex queries, using appropriate filters, or aggregating data more efficiently.
  
  
  
  Check for Updates:
  
  Ensure that your BW Accelerator is running the latest version and that all patches are applied. Sometimes, performance improvements and bug fixes in newer versions can help alleviate memory issues.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation for BW Accelerator for specific instructions on memory configuration and best practices.
  
  
  
  Engage SAP Support:
  
  If the issue persists after making adjustments, consider reaching out to SAP support for further assistance. They can provide guidance based on your specific system configuration and usage patterns.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on memory management for BW Accelerator.
  System Requirements: Review the system requirements for your version of BW Accelerator to ensure that your hardware is adequate for your data processing needs.
  Performance Tuning: Consider engaging in performance tuning activities for your BW system, which may include adjusting other parameters beyond just shared memory.
  
  By following these steps, you should be able to resolve the RSDD_ZA099 error and improve the performance of your BW Accelerator.