How To Fix RT644 - Average time for processing logical database requests

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 644

• Message text: Average time for processing logical database requests

What causes this issue?

Time used for calls to the SAP database interface.
There are various factors that influence the logical database access
time. For example, read requests can either be processed by the
database buffer or by the fast local SAP buffer. The efficiency of the
buffer, the number of required accesses and the proportion of accesses
that change the dataset all influence the total access time.
The database access time is measured in the database interface on the
application server. It therfore includes some of the application server
CPU time and the network transfer time.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT644 - Average time for processing logical database requests ?

  The SAP error message RT644, which refers to "Average time for processing logical database requests," typically indicates that the performance of logical database requests is not meeting the expected standards. This can be a concern for system performance and user experience.
  Cause:
  
  Inefficient Queries: The logical database queries may not be optimized, leading to longer processing times.
  Large Data Volume: If the logical database is handling a large volume of data, it can slow down processing times.
  Database Performance Issues: Underlying database performance issues, such as slow disk I/O or insufficient memory, can contribute to longer processing times.
  Network Latency: If the database is accessed over a network, latency can affect the response time.
  Configuration Issues: Incorrect configuration settings in the SAP system or database can lead to performance degradation.
  
  Solution:
  
  Optimize Queries: Review and optimize the logical database queries to ensure they are efficient. This may involve indexing, restructuring queries, or reducing the amount of data being processed.
  Data Archiving: Implement data archiving strategies to reduce the volume of data that the logical database needs to process.
  Database Tuning: Perform database tuning to improve performance. This can include adjusting memory settings, optimizing disk I/O, and ensuring that the database is properly indexed.
  Monitor Performance: Use SAP transaction codes like ST03N (Workload Analysis) and ST04 (Database Performance Analysis) to monitor performance and identify bottlenecks.
  Check Network Performance: If network latency is an issue, consider optimizing the network or moving the database closer to the application server.
  Review Configuration: Ensure that the SAP system and database configurations are set up correctly for optimal performance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to RT644 or performance tuning.
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools to gain insights into system performance and identify areas for improvement.
  Best Practices: Follow SAP best practices for database management and performance optimization.
  Consult Documentation: Refer to SAP documentation for detailed guidance on logical databases and performance tuning.
  
  If the issue persists after implementing these solutions, it may be beneficial to consult with SAP support or a professional with expertise in SAP performance tuning.