How To Fix BRAIN_SUP034 - SIDs not unique, therefore no cross-application server cache modes

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN_SUP - BRAIN messages (for use by support)

• Message number: 034

• Message text: SIDs not unique, therefore no cross-application server cache modes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN_SUP034 - SIDs not unique, therefore no cross-application server cache modes ?

  The SAP error message BRAIN_SUP034 indicates that there is an issue with the System IDs (SIDs) not being unique across the application servers in your SAP landscape. This can prevent the system from using cross-application server cache modes, which are designed to improve performance by allowing multiple application servers to share cached data.
  Cause:
  The error typically arises from one of the following scenarios:
  
  
  Non-Unique SIDs: The SIDs assigned to different application servers are not unique. Each application server in an SAP landscape should have a distinct SID to avoid conflicts.
  
  
  Configuration Issues: There may be misconfigurations in the SAP system settings that lead to the same SID being recognized by multiple servers.
  
  
  System Landscape Changes: Changes in the system landscape, such as adding new servers or changing configurations, can lead to SID conflicts if not managed properly.
  
  
  Solution:
  To resolve the BRAIN_SUP034 error, you can follow these steps:
  
  
  Check SIDs: Verify the SIDs of all application servers in your SAP landscape. Ensure that each server has a unique SID.
  
  
  Review Configuration: Check the configuration settings in the SAP system. Look for any misconfigurations that might cause the same SID to be recognized by multiple servers.
  
  
  Adjust System Landscape: If you have recently made changes to your system landscape (like adding or removing servers), ensure that these changes are reflected correctly in the system configuration.
  
  
  Restart Application Servers: After making any changes to the SIDs or configurations, restart the affected application servers to ensure that the changes take effect.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or updates that might address this specific error. There may be patches or updates that can help resolve the issue.
  
  
  Contact SAP Support: If the issue persists after following the above steps, consider reaching out to SAP Support for further assistance. They can provide more specific guidance based on your system configuration and landscape.
  
  
  Related Information:
  
  SAP Basis Administration: Understanding how to manage SIDs and application servers is crucial for SAP Basis administrators.
  Performance Tuning: Cross-application server cache modes are important for performance tuning in SAP systems, so resolving this error can lead to improved system performance.
  Documentation: Refer to SAP documentation for detailed information on system configuration and management of application servers.
  
  By ensuring that SIDs are unique and properly configured, you can resolve the BRAIN_SUP034 error and enable cross-application server cache modes in your SAP environment.