How To Fix CNVC_SCWB_ZMESSAGE028 - No. of scheduled jobs cannot exceed the no. of available work processes

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVC_SCWB_ZMESSAGE -

• Message number: 028

• Message text: No. of scheduled jobs cannot exceed the no. of available work processes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNVC_SCWB_ZMESSAGE028 - No. of scheduled jobs cannot exceed the no. of available work processes ?

  The SAP error message CNVC_SCWB_ZMESSAGE028 indicates that the number of scheduled jobs in the system exceeds the number of available work processes. This situation can lead to performance issues or job scheduling failures, as there are not enough work processes to handle the scheduled jobs.
  Cause:
  
  Excessive Job Scheduling: More jobs have been scheduled than the system can handle based on the available work processes.
  Limited Work Processes: The SAP system may be configured with a limited number of work processes, which can be insufficient for the volume of scheduled jobs.
  System Configuration: The configuration of the SAP instance may not be optimized for the workload, leading to an imbalance between job scheduling and available resources.
  
  Solution:
  
  
  Review Scheduled Jobs:
  
  Check the job scheduling in transaction SM37 (Job Monitoring) to identify any unnecessary or redundant jobs that can be canceled or rescheduled.
  
  
  
  Increase Work Processes:
  
  If feasible, consider increasing the number of work processes in the SAP system. This can be done by modifying the instance profile parameters (e.g., rdisp/wp_no_dia, rdisp/wp_no_btc, etc.) and restarting the instance.
  Ensure that the hardware resources (CPU, memory) can support the increase in work processes.
  
  
  
  Optimize Job Scheduling:
  
  Spread out the scheduling of jobs to avoid peak loads. Use the Job Scheduling feature to stagger job execution times.
  Consider using background job prioritization to manage the execution of critical jobs first.
  
  
  
  Monitor System Performance:
  
  Regularly monitor system performance and workload using transaction ST03N (Workload Analysis) to ensure that the system is not overloaded.
  Use transaction SM66 (Global Work Process Overview) to monitor the status of work processes in real-time.
  
  
  
  Adjust Job Parameters:
  
  Review the parameters of scheduled jobs to ensure they are not set to run too frequently or at the same time as other resource-intensive jobs.
  
  
  
  Related Information:
  
  Work Process Types: Understand the different types of work processes in SAP (Dialog, Background, Update, etc.) and how they impact job scheduling.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to job scheduling and work process management.
  System Configuration: Familiarize yourself with the SAP system configuration settings, particularly those related to background processing and work process management.
  
  By addressing the causes and implementing the solutions outlined above, you should be able to resolve the error CNVC_SCWB_ZMESSAGE028 and improve the efficiency of job scheduling in your SAP system.