How To Fix RT126 - Average response time of dialog service

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 126

• Message text: Average response time of dialog service

What causes this issue?

This monitoring tree element (MTE) reports the response time for the
dialog service. This is the service for interactive processing, as
opposed to the background or the update service.
The dialog response time is the processing time in the SAP application
server. It includes all processing time consumed for the processing of
a dialog step (starting with a user action and ending with the system's
response to the action), including database processing time. It does
not include network transmission time or front-end processing time. The
values that you see here are averaged across dialog steps.
You may see small variations in the statistics reported here as compared
to those reported in the analysis method associated with this MTE. This
variation is due to the finer granularity of the statistics in the
analysis method. The averaging of the values in the alert monitor can
result in small differences in values.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

An alert here indicates a performance problem with your system. Your
users are not receiving the prompt response from the system, as
reflected in the thresholds for response time.
High response times are a general symptom of performance problems. There
can be many different causes of the problem; a careful analysis is
therefore required. You should first check that the application server
is not overloaded, as measured for example by CPU performance, system
paging and dialog work process statistics. Another possible bottleneck
is the database; you should check that the database is performing
satisfactorily.
<DS:DE.STA_AVTRES>Background information</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT126 - Average response time of dialog service ?

  The SAP error message RT126, which refers to the "Average response time of dialog service," typically indicates that the average response time for dialog requests in the SAP system has exceeded a predefined threshold. This can be a performance issue that affects user experience and system efficiency.
  Cause:
  
  High Load on the System: A large number of concurrent users or processes can lead to increased response times.
  Inefficient Code: Poorly optimized ABAP code or inefficient database queries can slow down processing times.
  System Resource Constraints: Insufficient CPU, memory, or I/O resources can lead to performance degradation.
  Network Latency: Slow network connections can contribute to longer response times.
  Background Jobs: Heavy background processing can consume resources and affect dialog response times.
  Database Performance: Issues with the database, such as locks or slow queries, can impact response times.
  
  Solution:
  
  Monitor System Performance: Use transaction codes like ST03N (Workload Analysis) and ST06 (Operating System Monitor) to analyze system performance and identify bottlenecks.
  Optimize ABAP Code: Review and optimize any custom ABAP programs or reports that may be causing delays.
  Increase System Resources: If the system is consistently under heavy load, consider scaling up hardware resources (CPU, memory, etc.) or optimizing the existing infrastructure.
  Database Tuning: Analyze and optimize database performance. This may include indexing, query optimization, and checking for locks.
  Review Background Jobs: Check for any long-running background jobs that may be consuming resources and reschedule them if necessary.
  Network Optimization: Ensure that the network infrastructure is robust and that there are no issues causing latency.
  Adjust Thresholds: If the average response time is acceptable for your business needs but exceeds the threshold, consider adjusting the threshold settings in the SAP system.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to performance issues and RT126 for specific recommendations and patches.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users facing similar issues.
  Performance Tuning Guides: Refer to SAP's official performance tuning guides for best practices in optimizing SAP systems.
  
  By addressing the underlying causes and implementing the suggested solutions, you can improve the average response time of the dialog service and enhance overall system performance.