How To Fix UJHANA_CALC_FLOW004 - Trace has been started by others

SAP Error Message - Details

• Message type: E = Error

• Message class: UJHANA_CALC_FLOW - BPC: Calculation flow

• Message number: 004

• Message text: Trace has been started by others

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UJHANA_CALC_FLOW004 - Trace has been started by others ?

  The SAP error message UJHANA_CALC_FLOW004 with the description "Trace has been started by others" typically occurs in the context of SAP HANA when there is an attempt to start a trace that is already being executed by another user or process. This can happen in various scenarios, such as during performance analysis or debugging sessions.
  Cause:
  
  Concurrent Trace Sessions: The error indicates that a trace session is already active, and SAP HANA does not allow multiple trace sessions to be started simultaneously for the same context.
  User Permissions: The user attempting to start the trace may not have the necessary permissions to stop or manage the existing trace session.
  System Configuration: There may be system-level configurations or restrictions that prevent multiple traces from being initiated.
  
  Solution:
  
  Check Active Traces: Before starting a new trace, check if there are any active traces. You can do this by querying the system views or using the SAP HANA Studio or HANA Cockpit.
  
  Use SQL commands to check active traces, for example:
  SELECT * FROM M_TRACE WHERE STATE = 'ACTIVE';
  
  
  
  Stop Existing Trace: If you find an active trace that is no longer needed, you can stop it. This can typically be done using the appropriate SQL command or through the SAP HANA Studio.
  
  To stop a trace, you might use:
  CALL "SYS"."TRACE_STOP"('<trace_id>');
  
  
  
  Wait for Completion: If the trace is being used for a critical operation, you may need to wait until it completes before starting a new one.
  User Permissions: Ensure that the user has the necessary permissions to manage traces. You may need to consult with your SAP Basis or security team to adjust user roles if necessary.
  Consult Documentation: Refer to the SAP HANA documentation for specific commands and procedures related to tracing and performance analysis.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Performance Monitoring: Familiarize yourself with SAP HANA's performance monitoring tools and best practices to avoid such issues in the future.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.