How To Fix D4426 - SAP/OS400 active space roll management: Roll areas - peak size

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 426

• Message text: SAP/OS400 active space roll management: Roll areas - peak size

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D4426 - SAP/OS400 active space roll management: Roll areas - peak size ?

  The SAP error message D4426, which pertains to "SAP/OS400 active space roll management: Roll areas - peak size," typically indicates that the peak size of the roll areas has exceeded the defined limits. This can occur in environments where SAP is running on the IBM iSeries (formerly AS/400) platform.
  Cause:
  
  Excessive Roll Area Usage: The roll area is used to store data that cannot fit into the main memory. If the application is processing a large amount of data or if there are many concurrent users, the roll area may grow beyond its configured limits.
  Configuration Issues: The roll area size may not be configured appropriately for the workload. If the parameters for roll area size are set too low, it can lead to this error.
  Memory Constraints: The underlying system may not have enough memory allocated to handle the peak load, leading to increased roll area usage.
  
  Solution:
  
  
  Increase Roll Area Size: You can increase the size of the roll areas in the SAP profile parameters. This can be done by adjusting the parameters rdisp/roll_area and rdisp/roll_max_size in the instance profile.
  
  Use transaction RZ10 to modify the instance profile.
  After making changes, restart the SAP instance for the changes to take effect.
  
  
  
  Monitor and Optimize Workload: Analyze the workload on the system to identify any processes that may be consuming excessive resources. Optimize these processes if possible.
  
  
  Check Memory Allocation: Ensure that the IBM iSeries system has sufficient memory allocated to handle the SAP workload. You may need to adjust the system's memory settings.
  
  
  Review Application Logic: If specific transactions or reports are causing excessive roll area usage, review the application logic for optimization opportunities.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  Related Information:
  
  SAP Basis Administration: Understanding the configuration of roll areas and memory management is crucial for SAP Basis administrators.
  Performance Monitoring: Use tools like SAP Solution Manager or transaction ST02 (Buffer Management) to monitor memory usage and performance.
  Documentation: Refer to the SAP Help Portal for detailed documentation on memory management and roll area configuration.
  
  By addressing the configuration and monitoring the system's performance, you can mitigate the occurrence of the D4426 error and ensure smoother operation of your SAP environment on OS400.