How To Fix 0S141 - The RFC trace is already switched on for user &

SAP Error Message - Details

• Message type: E = Error

• Message class: 0S - Messages for the SQL trace

• Message number: 141

• Message text: The RFC trace is already switched on for user &

What causes this issue?

If one of the performance traces is already activated for a user, it is
not possible to activate a trace for another user on the same
application server. However, the trace can be activated for a group of
users.
The RFC trace has already been activated for the specified user.

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?

Wait until the other user deactivates the trace. You can then activate
the trace. You can also activate the trace for all users, or for users
whose names match a pattern. When doing so, specify the pattern in the
usual format.
You can activate the trace for multiple users by choosing the "Activate
Trace with Filter" button.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 0S141 - The RFC trace is already switched on for user & ?

  The SAP error message 0S141 indicates that the RFC (Remote Function Call) trace is already enabled for the specified user. This message typically arises when there is an attempt to enable the RFC trace for a user who already has it activated.
  Cause:
  The primary cause of this error is that the RFC trace has already been activated for the user in question. The RFC trace is a diagnostic tool used to log the details of RFC calls, which can be useful for troubleshooting and performance analysis.
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check Current RFC Trace Status:
  
  Use transaction code SM04 or SM50 to check the active sessions and see if the RFC trace is already enabled for the user.
  You can also use transaction ST01 (System Trace) to check if the trace is active.
  
  
  
  Disable the RFC Trace:
  
  If you need to disable the trace, you can do so using transaction ST01. 
  In the System Trace screen, select the user and deactivate the trace.
  
  
  
  Re-enable the RFC Trace:
  
  After disabling, you can re-enable the RFC trace for the user if needed.
  
  
  
  Check for Multiple Sessions:
  
  If the user has multiple sessions open, ensure that the trace is not enabled in any of those sessions.
  
  
  
  Consult Documentation:
  
  If you are unsure about the implications of enabling or disabling the RFC trace, consult the SAP documentation or your system administrator.
  
  
  
  Related Information:
  
  RFC Trace: This is a tool used in SAP to log and analyze RFC calls. It can help in diagnosing issues related to remote function calls.
  Transaction Codes:
  
  ST01: System Trace - Used to enable/disable traces for users.
  SM04: User Overview - Displays active user sessions.
  SM50: Work Process Overview - Shows the status of work processes.
  
  
  Performance Monitoring: Enabling RFC trace can impact system performance, so it should be used judiciously, especially in production environments.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis team or refer to SAP support for further assistance.