How To Fix 0S143 - The table buffer trace is already activated for user &

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 143

• Message text: The table buffer trace is already activated for user &

What causes this issue?

The trace can only be activated for one user or group of users on each
application server.
The buffer 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 has deactivated 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.

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 0S143 - The table buffer trace is already activated for user & ?

  The SAP error message 0S143 indicates that the table buffer trace is already activated for a specific user. This message typically arises when a user attempts to activate the table buffer trace while it is already active for that user.
  Cause:
  The primary cause of this error is that the user is trying to activate the table buffer trace (which is used for performance analysis and debugging) when it is already enabled for their user session. The table buffer trace is a tool that helps in monitoring the performance of table buffering in SAP.
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check Current Status: Verify if the table buffer trace is indeed active for the user. You can do this by checking the relevant transaction or using the appropriate function module to see the status of the trace.
  
  
  Deactivate the Trace: If the trace is active and you want to deactivate it, you can do so using the transaction code ST05 (SQL Trace) or ST12 (Combined Trace). Look for the option to deactivate the trace for the user.
  
  
  Re-activate if Needed: If you need to re-activate the trace after deactivating it, you can do so again through the same transaction.
  
  
  User Session: If the user is working in multiple sessions, ensure that the trace is not activated in another session. The trace is user-specific, so activating it in one session will affect all sessions for that user.
  
  
  Consult Documentation: If you are unsure about the steps or need more detailed instructions, refer to the SAP documentation or help resources related to performance tracing and debugging.
  
  
  Related Information:
  
  Table Buffering: Table buffering is a performance optimization technique in SAP that allows frequently accessed data to be stored in memory, reducing database access time.
  Transaction Codes: Familiarize yourself with transaction codes like ST05 (SQL Trace), ST12 (Combined Trace), and SM12 (Lock Entries) for monitoring and troubleshooting.
  User Authorizations: Ensure that the user has the necessary authorizations to activate or deactivate traces.
  
  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.