How To Fix PF026 - Value missing for number of enqueue work processes

SAP Error Message - Details

• Message type: E = Error

• Message class: PF - System parametrization messages in Computing Ctr Mgmt System

• Message number: 026

• Message text: Value missing for number of enqueue work processes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PF026 - Value missing for number of enqueue work processes ?

  The SAP error message PF026 indicates that there is a missing value for the number of enqueue work processes in the system profile. This error typically arises during the system startup or when the enqueue server is being initialized. The enqueue work processes are crucial for managing locks in the SAP system, ensuring data consistency during concurrent access.
  Cause:
  The error occurs when the parameter for the number of enqueue work processes (enque/work_processes) is not set or is set to an invalid value in the instance profile. This can happen due to:
  
  Profile Misconfiguration: The instance profile may not have the required parameter defined.
  Profile Corruption: The profile file may be corrupted or improperly edited.
  System Upgrade or Migration: Changes during an upgrade or migration may lead to missing or incorrect parameters.
  
  Solution:
  To resolve the PF026 error, follow these steps:
  
  
  Check the Instance Profile:
  
  Go to the SAP system and check the instance profile settings.
  You can do this using transaction code RZ10 (Profile Maintenance).
  Look for the parameter enque/work_processes.
  
  
  
  Set the Parameter:
  
  If the parameter is missing, add it with an appropriate value. The value typically depends on the system's workload and should be set based on the number of application servers and expected concurrency.
  A common starting point is to set it to a value between 1 and 4, but this can vary based on your specific system requirements.
  
  
  
  Save and Activate the Profile:
  
  After making changes, save the profile and activate it.
  You may need to restart the SAP instance for the changes to take effect.
  
  
  
  Check for Other Related Parameters:
  
  Ensure that other related parameters are also correctly set, such as rdisp/wp_no_enq, which defines the number of enqueue work processes.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SM21) for any additional errors or warnings that may provide more context about the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes for specific recommendations based on your SAP version and system landscape.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to enqueue work processes for any specific recommendations or known issues.
  Performance Considerations: The number of enqueue work processes can impact system performance, so it’s essential to monitor the system after making changes.
  System Monitoring: Use transaction SM50 or SM66 to monitor the work processes and ensure they are functioning correctly after the changes.
  
  By following these steps, you should be able to resolve the PF026 error and ensure that your SAP system can manage locks effectively.