How To Fix 0S140 - The SQL 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: 140

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

What causes this issue?

The trace can only be activated for one user or group of users on each
application server.
Since the SQL trace is already activated for the specified user, you
cannot activate the SQL trace, nor any of the other performance traces
(RFC trace, HTTP trace, enqueue trace, buffer trace) on this application
server.

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 SQL trace and other traces.
You can also activate the trace for all users, or for users whose names
match a pattern. In this case, specify the pattern in the usual format.
You can activate the trace for multiple users by choosing the button
"Activate Trace with Filter".

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 0S140 - The SQL trace is already switched on for user & ?

  The SAP error message 0S140 indicates that the SQL trace is already activated for the specified user. This message typically arises when you attempt to start an SQL trace for a user who already has an active trace session.
  Cause:
  The primary cause of this error is that the SQL trace (transaction ST05) is already enabled for the user in question. SQL traces are used for performance analysis and debugging, and they can only be activated once per user session. If you try to activate it again without deactivating the existing trace, you will encounter this error.
  Solution:
  To resolve this issue, you can follow these steps:
  
  
  Deactivate the Existing Trace:
  
  Go to transaction code ST05.
  Check if the trace is already active for the user.
  If it is, deactivate the trace by clicking on the "Deactivate Trace" button.
  
  
  
  Re-activate the Trace:
  
  After deactivating the existing trace, you can then re-activate the SQL trace for the user.
  
  
  
  Check for Multiple Sessions:
  
  Ensure that the user is not logged in multiple times in different sessions, as each session can have its own trace. If there are multiple sessions, you may need to deactivate the trace in each session.
  
  
  
  Use a Different User:
  
  If you need to run a trace and cannot deactivate the existing one, consider using a different user account to start a new trace.
  
  
  
  Related Information:
  
  Transaction ST05: This is the transaction code used to manage SQL traces in SAP. It allows you to activate, deactivate, and analyze SQL traces.
  Performance Analysis: SQL traces are essential for identifying performance bottlenecks in database queries. They provide insights into the SQL statements executed by the application.
  User Management: Ensure that you have the necessary authorizations to manage traces for users, as some roles may restrict access to trace management functions.
  
  By following these steps, you should be able to resolve the error and successfully manage SQL traces in your SAP environment.