How To Fix ACMDEVTRC018 - SQL Trace already running

SAP Error Message - Details

• Message type: E = Error

• Message class: ACMDEVTRC -

• Message number: 018

• Message text: SQL Trace already running

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ACMDEVTRC018 - SQL Trace already running ?

  The SAP error message ACMDEVTRC018, which states "SQL Trace already running," typically occurs when there is an attempt to start SQL tracing while a trace session is already active. This can happen in various scenarios, such as when using transaction codes like ST05 (SQL Trace) or when trying to enable tracing programmatically.
  Cause:
  
  Active Trace Session: The most common cause is that a SQL trace session is already running for the user or the system.
  Multiple Attempts: The user or a program is trying to start a new trace without stopping the existing one.
  System Configuration: In some cases, system settings or configurations may lead to unexpected behavior regarding trace management.
  
  Solution:
  
  
  Stop the Existing Trace:
  
  Use transaction code ST05 to check if a trace is currently active.
  If a trace is running, stop it by clicking on the "Deactivate Trace" button.
  After stopping the trace, you can start a new trace session.
  
  
  
  Check for Other Users:
  
  If you are in a multi-user environment, ensure that no other user is running a trace that might conflict with your attempt.
  
  
  
  Review Trace Settings:
  
  If you are using a programmatic approach to start the trace, ensure that your code checks for an active trace before attempting to start a new one.
  
  
  
  System Restart: In rare cases, if the trace cannot be stopped due to a system issue, a system restart may be necessary. However, this should be a last resort and done in accordance with your organization's policies.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  ST05: SQL Trace - Used to activate and deactivate SQL tracing.
  ST12: Combined Trace - Can also be used to analyze performance issues.
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on SQL tracing and performance analysis.
  
  
  Performance Monitoring: Regularly monitor SQL traces to ensure that they are not left running longer than necessary, as this can impact system performance.
  
  
  User Authorization: Ensure that you have the necessary authorizations to start and stop SQL traces in your SAP environment.
  
  
  By following these steps, you should be able to resolve the ACMDEVTRC018 error and manage SQL tracing effectively in your SAP system.