How To Fix 0S145 - You have already switched on the RFC trace

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 145

• Message text: You have already switched on the RFC trace

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 0S145 - You have already switched on the RFC trace ?

  The SAP error message 0S145 ("You have already switched on the RFC trace") typically occurs when you attempt to enable the RFC (Remote Function Call) trace in an SAP system, but it is already active. This can happen in various scenarios, such as when troubleshooting issues related to RFC connections or performance.
  Cause:
  The error indicates that the RFC trace is already enabled for the user or system context you are working in. This can happen if:
  
  The trace was previously activated and not turned off.
  Multiple attempts to activate the trace are made without deactivating it first.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Current Trace Status:
  
  Use transaction code SM59 to check the status of the RFC connections and see if the trace is already active.
  
  
  
  Deactivate the RFC Trace:
  
  If you need to turn off the trace, you can do so by using the appropriate transaction or command. In many cases, you can deactivate the trace using the same transaction or command you used to activate it.
  You can also use transaction ST05 (SQL Trace) or ST12 (Combined Trace) to manage traces.
  
  
  
  Re-enable the Trace:
  
  After deactivating the trace, you can attempt to enable it again if needed.
  
  
  
  Check User Authorizations:
  
  Ensure that you have the necessary authorizations to manage RFC traces. Lack of permissions can sometimes lead to confusion regarding the trace status.
  
  
  
  Consult Documentation:
  
  If you are unsure about the steps or need more detailed instructions, refer to the SAP Help Portal or your organization's internal documentation regarding RFC tracing.
  
  
  
  Related Information:
  
  RFC Tracing: This is a diagnostic tool used to monitor and analyze RFC calls between SAP systems. It can help identify performance issues or errors in communication.
  Transaction Codes:
  
  SM59: Manage RFC connections.
  ST05: SQL Trace for performance analysis.
  ST12: Combined Trace for detailed analysis.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to RFC tracing or provide additional troubleshooting steps.
  
  If the problem persists after following these steps, consider reaching out to your SAP Basis team or consulting SAP support for further assistance.