How To Fix RSENQ078 - Collector already started by user &1

RSENQ078 - Overview

• Message type: E = Error

• Message class: RSENQ - Lock Manager

• Message number: 078

• Message text: Collector already started by user &1

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSENQ078 - Collector already started by user &1 ?

  The SAP error message RSENQ078 indicates that a data collector process has already been started by another user. This typically occurs in the context of data collection processes in SAP BW (Business Warehouse) or similar environments where data is being collected or processed.
  
  Cause:
  The error is caused by the following scenarios:
  
  Concurrent Execution: Another user or process has already initiated the data collection process, and the system does not allow multiple instances of the same collector to run simultaneously.
  Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If a collector is already running, it locks the process, and any subsequent attempts to start the same collector will result in this error.
  
  
  Solution:
  To resolve the RSENQ078 error, you can take the following steps:
  
  
  Check Running Processes:
  
  Use transaction SM66 (Global Work Process Overview) or SM50 (Work Process Overview) to check if the collector is currently running. Look for the user ID mentioned in the