How To Fix RSD_TREX154 - BWA server is overloaded

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 154

• Message text: BWA server is overloaded

What causes this issue?

The SAP NetWeaver BW Accelerator server is overloaded. Either there has
recently been a forced unload of the BWA main memory, or the total
volume of loaded data exceeds the limit of 50% of the available main
memory.
Both situations impair the stability of the BWA server.

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?

You have two options:
#,,Reduce the volume of data in BWA: Delete BWA indexes that you do not
really need at the moment.
#,,Contact your BWA hardware partner and resize the BWA hardware.

Procedure for System Administrators

In the standard setting, this message only appears as a warning in
processes that index large volumes of data to BWA. You can use ad
ministration parameters to set it as an error message instead. This
causes all index processes to terminate if the error occurs.
To do this, run program RSDDTREX_ADMIN_MAINTAIN with parameters Object=
DONT_IGNORE_BIA_OVERLOAD, Value = X, and INSERT/UPDATE = X.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX154 - BWA server is overloaded ?

  The SAP error message RSD_TREX154 indicates that the BWA (Business Warehouse Accelerator) server is overloaded. This typically occurs when the server is unable to handle the volume of requests or the complexity of the queries being executed. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  High Query Load: A large number of concurrent queries or very complex queries can overwhelm the BWA server.
  Insufficient Resources: The BWA server may not have enough CPU, memory, or disk I/O capacity to handle the workload.
  Configuration Issues: Incorrect configuration settings for the BWA server can lead to performance issues.
  Data Volume: Large datasets being processed can lead to increased load on the server.
  Network Issues: Network latency or connectivity problems can exacerbate the perception of an overloaded server.
  
  Solutions:
  
  Monitor Server Performance: Use monitoring tools to check CPU, memory, and disk usage on the BWA server. Identify any bottlenecks.
  Optimize Queries: Review and optimize the queries being sent to the BWA server. Simplifying complex queries or reducing the number of concurrent queries can help.
  Increase Resources: If the server is consistently overloaded, consider upgrading the hardware (CPU, RAM, etc.) or scaling out by adding more BWA servers.
  Adjust Configuration: Review and adjust the configuration settings for the BWA server to ensure optimal performance. This may include tuning parameters related to memory allocation and query execution.
  Load Balancing: If applicable, implement load balancing to distribute the query load across multiple BWA servers.
  Schedule Off-Peak Processing: If possible, schedule heavy data processing tasks during off-peak hours to reduce the load during peak times.
  Check for Network Issues: Ensure that there are no network issues affecting the communication between the SAP system and the BWA server.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to BWA performance and error messages for specific guidance and patches.
  SAP Community: Engage with the SAP Community forums to see if other users have experienced similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for BWA to understand best practices for configuration and performance tuning.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to mitigate the RSD_TREX154 error and improve the performance of your BWA server.