How To Fix RSDD_ZA381 - Check why BW Accelerator does not use the shared memory

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 381

• Message text: Check why BW Accelerator does not use the shared memory

What causes this issue?

Use of shared memory must be activated.

System Response

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

How to fix this error?

Contact SAP support to check the settings.

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_ZA381 - Check why BW Accelerator does not use the shared memory ?

  The SAP error message RSDD_ZA381 indicates that the BW Accelerator (BWA) is not utilizing shared memory as expected. This can lead to performance issues in data retrieval and processing within SAP BW (Business Warehouse). Below are the potential causes, solutions, and related information for this error:
  Causes:
  
  Configuration Issues: The BW Accelerator may not be properly configured to use shared memory.
  Insufficient Memory Allocation: The system may not have enough memory allocated for the BW Accelerator to utilize shared memory effectively.
  Version Compatibility: There may be compatibility issues between the BW version and the BWA version.
  System Resource Limitations: The underlying system may have resource limitations that prevent the use of shared memory.
  Database Locks or Conflicts: Other processes may be locking resources that the BW Accelerator needs to access shared memory.
  
  Solutions:
  
  
  Check Configuration Settings:
  
  Ensure that the BW Accelerator is correctly configured to use shared memory. This can typically be done in the BW settings or configuration transactions.
  Verify the settings in transaction RSD1 for InfoProviders and ensure that the BWA is enabled.
  
  
  
  Memory Allocation:
  
  Review the memory settings for the BW Accelerator. You may need to increase the shared memory allocation in the system settings.
  Use transaction RZ10 to adjust the profile parameters related to memory allocation.
  
  
  
  Update Software:
  
  Ensure that both SAP BW and BW Accelerator are updated to the latest versions. Check for any patches or updates that may address compatibility issues.
  
  
  
  Monitor System Resources:
  
  Use transaction ST02 to monitor memory usage and check for any bottlenecks or issues with memory allocation.
  Investigate any other processes that may be consuming excessive resources and resolve those conflicts.
  
  
  
  Check for Locks:
  
  Use transaction SM12 to check for any database locks that may be preventing the BW Accelerator from accessing shared memory.
  Resolve any locks that are not needed.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may provide additional guidance or fixes related to this error message.
  
  
  
  Related Information:
  
  SAP BW Accelerator Documentation: Review the official SAP documentation for BW Accelerator to understand its architecture and configuration.
  Performance Tuning: Consider performance tuning for your BW system, which may include optimizing queries, data models, and indexing strategies.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP Support for further assistance.