How To Fix S1634 - Trace is switched on for & on &

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 634

• Message text: Trace is switched on for & on &

What causes this issue?

You want to activate one or more traces. However one or more traces are
already activated for one or all users.
Since the trace can only be activated for one or all users you cannot
change the trace switch.

System Response

After the message the system continues working.

How to fix this error?

Wait until the trace has been deactivated by the user.
If necessary contact the user who activated the trace. You can find the
user name on the screen "Trace requests" (initial screen of the
transaction) under the heading "State of traces".

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message S1634 - Trace is switched on for & on & ?

  The SAP error message S1634, which states "Trace is switched on for & on &," typically indicates that a trace is currently active for a specific user or process in the SAP system. This can happen when a developer or administrator has enabled tracing for debugging or performance analysis purposes.
  Cause:
  
  Active Trace: The most common cause of this message is that a trace has been activated for a user or a specific transaction. This is often done to gather detailed information about the system's behavior during execution.
  Performance Monitoring: Traces are often used for performance monitoring and debugging, and they can be left on unintentionally.
  System Configuration: Sometimes, system settings or configurations may lead to traces being enabled by default for certain users or transactions.
  
  Solution:
  
  
  Disable the Trace: The primary solution is to disable the trace that has been activated. This can typically be done using transaction codes such as:
  
  ST01: System Trace
  ST05: SQL Trace
  ST12: Combined Trace
  SM37: Job Monitoring (to check if any background jobs are running with traces)
  
  In these transactions, you can find the option to deactivate the trace for the specific user or process.
  
  
  Check User Settings: If the trace was enabled for a specific user, check the user settings in transaction SU01 to ensure that tracing is not set to be enabled by default.
  
  
  Review Documentation: If you are unsure about how to disable the trace, refer to the SAP documentation or consult with your SAP Basis team for assistance.
  
  
  Restart the Transaction: After disabling the trace, you may need to restart the transaction or process that was generating the error message.
  
  
  Related Information:
  
  Performance Impact: Leaving traces on can impact system performance, as they generate logs and can consume additional resources.
  Trace Analysis: If you are troubleshooting an issue, ensure that you analyze the trace data before disabling it, as it may contain valuable information for diagnosing problems.
  SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions related to this error message.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP's support portal for further assistance.