How To Fix RH168 - Hierarchy & can not be activated - problems with memory

SAP Error Message - Details

• Message type: E = Error

• Message class: RH - BW: Hierarchies ( basic functions )

• Message number: 168

• Message text: Hierarchy & can not be activated - problems with memory

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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Smart SAP Assistant

• What is the cause and solution for SAP error message RH168 - Hierarchy & can not be activated - problems with memory ?

  The SAP error message RH168 typically indicates that there is an issue with activating a hierarchy due to memory problems. This can occur in various contexts, such as when working with organizational structures, reporting hierarchies, or other hierarchical data structures in SAP.
  Cause:
  
  Insufficient Memory: The most common cause of this error is that the system does not have enough memory allocated to process the hierarchy activation. This can happen if the hierarchy is too large or complex.
  System Configuration: The SAP system may not be optimally configured for memory usage, leading to performance issues.
  Database Issues: Problems with the underlying database, such as locks or insufficient resources, can also contribute to this error.
  Data Integrity Issues: Corrupted or inconsistent data within the hierarchy can lead to activation failures.
  
  Solution:
  
  
  Increase Memory Allocation:
  
  Check the memory settings in the SAP system profile parameters. You may need to increase the abap/heap_area_total and abap/heap_area_dia parameters to allocate more memory for ABAP programs.
  Consider increasing the rdisp/PG_MAXFS parameter if applicable.
  
  
  
  Optimize Hierarchy:
  
  Review the hierarchy structure to see if it can be simplified or broken down into smaller parts for activation.
  Ensure that there are no circular references or inconsistencies in the hierarchy data.
  
  
  
  Check System Performance:
  
  Monitor system performance using transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to identify any bottlenecks.
  Use transaction SM50 to check for long-running processes that may be consuming memory.
  
  
  
  Database Maintenance:
  
  Perform database maintenance tasks such as reorganization or index rebuilding to ensure optimal performance.
  Check for locks or long-running transactions in the database that may be affecting memory usage.
  
  
  
  SAP Notes and Support:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches.
  If the issue persists, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE38 (ABAP Editor) for debugging and analyzing the hierarchy.
  Monitoring Tools: Use tools like ST22 (Dump Analysis) to check for any short dumps that may provide more context on the memory issues.
  Documentation: Review SAP documentation related to memory management and hierarchy activation for best practices and guidelines.
  
  By following these steps, you should be able to diagnose and resolve the RH168 error related to hierarchy activation in SAP.