/BOBF/FRW042 - SHM inconsistent: unexpected change of load hash value

SAP Error Message - Details

• Message type: E = Error

• Message class: /BOBF/FRW -

• Message number: 042

• Message text: SHM inconsistent: unexpected change of load hash value

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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AnswerBot

• What is the cause and solution for SAP error message /BOBF/FRW042 - SHM inconsistent: unexpected change of load hash value ?

  The SAP error message /BOBF/FRW042 SHM inconsistent: unexpected change of load hash value typically indicates an inconsistency in the Shared Memory (SHM) used by the Business Object Processing Framework (BOPF) in SAP. This error can occur when there is a mismatch between the expected state of the data in memory and the actual state, often due to changes in the underlying data model or issues with data consistency.
  Causes:
  
  Data Model Changes: If there have been recent changes to the data model (e.g., changes in the structure of business objects, attributes, or relationships), it can lead to inconsistencies in the shared memory.
  Concurrency Issues: Multiple transactions or processes trying to access or modify the same data simultaneously can lead to unexpected changes in the load hash value.
  System Bugs: There may be bugs in the BOPF framework or related components that can cause this inconsistency.
  Memory Corruption: Issues with the underlying memory management or corruption can also lead to this error.
  
  Solutions:
  
  Check for Recent Changes: Review any recent changes made to the data model or business objects. If changes were made, ensure that they are correctly implemented and that the system is updated accordingly.
  Clear Shared Memory: In some cases, clearing the shared memory can resolve the issue. This can be done by restarting the application server or using transaction codes like /BOBF/SHM to manage shared memory.
  Check for Locks: Use transaction codes like SM12 to check for any locks that might be causing concurrency issues. Release any unnecessary locks.
  System Restart: If the issue persists, consider restarting the affected application server or the entire SAP system to refresh the memory state.
  SAP Notes and Support: Check the SAP Support Portal for any relevant SAP Notes that address this specific error. There may be patches or updates available that resolve known issues.
  Debugging: If you have access to development tools, consider debugging the BOPF framework to identify the root cause of the inconsistency.
  
  Related Information:
  
  BOPF Documentation: Familiarize yourself with the BOPF framework and its architecture. Understanding how BOPF manages data and memory can help in troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /BOBF/SHM, SM12 (for locks), and ST22 (for dumps) to assist in troubleshooting.
  
  If the problem continues after trying the above solutions, it may be necessary to engage SAP support for further assistance.