How To Fix RZ457 - Dispatcher queue overflow

RZ457 - Overview

• Message type: E = Error

• Message class: RZ - Messages for Computing Center Management System

• Message number: 457

• Message text: Dispatcher queue overflow

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RZ457 - Dispatcher queue overflow ?

  The SAP error message RZ457, which indicates "Dispatcher queue overflow," typically occurs when the number of requests in the dispatcher queue exceeds the configured limits. This can lead to performance issues and may prevent users from logging into the system or executing transactions.
  Causes:
  
  High Load: A sudden increase in user activity or background jobs can overwhelm the dispatcher.
  Insufficient Resources: The system may not have enough resources (CPU, memory) to handle the current workload.
  
  Configuration Issues: The dispatcher settings may not be optimized for the current usage patterns.
  Long-Running Transactions: If transactions take too long to complete, they can block the dispatcher from processing new requests.
  Network Issues: Delays in network communication can cause requests to pile up in the dispatcher queue.
  
  Solutions:
  
  
  Increase Dispatcher Capacity:
  
  Adjust the parameters in the instance profile to increase the number of work processes (e.g., rdisp/wp_no_dia, rdisp/wp_no_btc, etc.).
  Ensure that the rdisp/max_wprun_time parameter is set appropriately to avoid long-running processes.
  
  
  
  Monitor and Optimize Performance:
  
  Use