How To Fix RT445 - Current size of roll area [KB]

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 445

• Message text: Current size of roll area [KB]

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT445 - Current size of roll area [KB] ?

  The SAP error message RT445, which indicates an issue with the current size of the roll area, typically arises when the roll area size is insufficient for the operations being performed in the SAP system. The roll area is a part of the memory used by the SAP system to store data for user sessions, particularly for managing user contexts and handling large data sets.
  Cause:
  
  Insufficient Roll Area Size: The roll area size may be set too low to accommodate the data being processed, especially during large transactions or when multiple users are active.
  High User Load: A high number of concurrent users or heavy processing tasks can lead to increased memory usage, causing the roll area to fill up quickly.
  Configuration Issues: Incorrect configuration settings in the SAP system regarding memory allocation can lead to this error.
  
  Solution:
  
  
  Increase Roll Area Size:
  
  You can increase the roll area size by adjusting the profile parameters in the SAP system. The relevant parameters are:
  
  rdisp/roll_area
  rdisp/roll_max_sess
  
  
  You can modify these parameters in the instance profile or the default profile using transaction RZ10 or RZ11.
  
  
  
  Monitor and Optimize Memory Usage:
  
  Use transaction SM04 to monitor user sessions and identify any sessions that are consuming excessive memory.
  Optimize the code and processes that are running in the system to reduce memory consumption.
  
  
  
  Review System Configuration:
  
  Ensure that the overall memory configuration of the SAP system is appropriate for the workload. This includes checking the settings for the heap memory and other related parameters.
  
  
  
  Restart the Instance:
  
  In some cases, restarting the SAP instance can help clear up memory and resolve temporary issues.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  RZ10: To change instance profile parameters.
  SM04: To monitor user sessions.
  ST02: To check for memory bottlenecks.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on memory management and configuration.
  
  
  Performance Monitoring: Regularly monitor system performance and memory usage to prevent such issues from occurring in the future.
  
  
  By addressing the roll area size and optimizing memory usage, you can resolve the RT445 error and improve the overall performance of your SAP system.