How To Fix S_AUT018 - Memory tables deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: S_AUT - Audit Trail (ILM): Messages

• Message number: 018

• Message text: Memory tables deleted

What causes this issue?

The specifications regarding the changed log functions have been
deleted.

System Response

All logging statements are ineffective. The previously changed log
functions will not be stored in the database.

How to fix this error?

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

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 S_AUT018 - Memory tables deleted ?

  The SAP error message S_AUT018, which states "Memory tables deleted," typically occurs in the context of authorization checks within the SAP system. This message indicates that the memory tables used for authorization checks have been cleared or deleted, which can lead to performance issues or authorization failures.
  Cause:
  
  
  Memory Management: The SAP system uses memory tables to store authorization data for efficient access. If these tables are cleared, it may be due to:
  
  System memory constraints.
  Manual intervention or configuration changes.
  A system restart or transaction that requires a refresh of the authorization data.
  
  
  
  Authorization Issues: If the user does not have the necessary authorizations, the system may not be able to access the required data, leading to this error.
  
  
  System Configuration: Changes in system configuration or updates may inadvertently affect how memory tables are managed.
  
  
  Solution:
  
  
  Check User Authorizations: Ensure that the user encountering the error has the necessary authorizations. You can do this by:
  
  Using transaction code SU53 to analyze the last authorization check.
  Reviewing the user's roles and profiles in transaction SU01.
  
  
  
  System Restart: If the error is due to a temporary issue with memory management, restarting the SAP application server may help restore the memory tables.
  
  
  Adjust Memory Settings: Review and adjust the memory settings in the SAP system. This can involve:
  
  Increasing the memory allocation for the application server.
  Tuning the parameters related to memory management in the instance profile.
  
  
  
  Check for System Updates: Ensure that the SAP system is up to date with the latest patches and updates, as these may contain fixes for known issues related to memory management.
  
  
  Monitor System Performance: Use transaction ST02 (Tune Summary) to monitor memory usage and identify any bottlenecks or issues that may be causing the memory tables to be deleted.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SU53: Display Authorization Check
  SU01: User Maintenance
  ST02: Tune Summary
  SM21: System Log
  ST22: Dump Analysis
  
  
  
  SAP Documentation: Refer to the official SAP Help Portal for documentation on authorization management and memory management.
  
  
  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 problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.