How To Fix RT748 - Number of completed enqueue work processes

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 748

• Message text: Number of completed enqueue work processes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT748 - Number of completed enqueue work processes ?

  The SAP error message RT748, which states "Number of completed enqueue work processes," typically indicates an issue related to the enqueue server in the SAP system. This error can occur when the number of enqueue work processes that have completed their tasks exceeds the configured limit, leading to potential issues with resource allocation and system performance.
  Causes:
  
  Configuration Issues: The number of enqueue work processes may be set too low in the system configuration, leading to bottlenecks.
  High Load: A sudden increase in workload or transactions can overwhelm the enqueue server, causing it to exceed its capacity.
  Deadlocks: If there are deadlocks or long-running transactions, it can lead to the enqueue work processes being tied up, causing the error.
  Resource Limitations: Insufficient system resources (CPU, memory) can lead to performance issues, affecting the enqueue processes.
  Network Issues: Problems with network connectivity can also impact the communication between application servers and the enqueue server.
  
  Solutions:
  
  
  Increase the Number of Enqueue Work Processes:
  
  Adjust the configuration in the SAP profile parameters to increase the number of enqueue work processes. This can be done in the instance profile (e.g., rdisp/wp_no_enq).
  Restart the SAP instance for the changes to take effect.
  
  
  
  Monitor and Optimize Workload:
  
  Use transaction codes like ST03N or ST06 to analyze the workload and identify any long-running transactions or performance bottlenecks.
  Optimize the code or processes that are causing high load on the enqueue server.
  
  
  
  Check for Deadlocks:
  
  Use transaction SM21 to check the system log for any deadlock situations and resolve them accordingly.
  Implement proper locking mechanisms in your ABAP code to avoid deadlocks.
  
  
  
  Resource Allocation:
  
  Ensure that the server has adequate resources (CPU, memory) allocated to handle the workload.
  Consider scaling up the hardware or optimizing the existing resources.
  
  
  
  Network Configuration:
  
  Check the network configuration and ensure that there are no connectivity issues between application servers and the enqueue server.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that may address specific issues related to enqueue work processes. SAP frequently releases updates and patches that can resolve known issues.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM50: Monitor work processes.
  SM66: Global work process overview.
  ST02: Tune the buffer.
  ST04: Database performance analysis.
  
  
  
  SAP Documentation: Refer to the official SAP Help Portal for detailed documentation on enqueue processes and performance tuning.
  
  
  SAP Community: Engage with the SAP Community forums for insights and solutions from other SAP professionals who may have encountered similar issues.
  
  
  By following these steps, you should be able to diagnose and resolve the RT748 error effectively.