How To Fix DB6PM406 - Prefetch Priority for Service Class &1 has been set to &2

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6PM - DB2 UDB for UNIX, Windows: Performance Monitoring

• Message number: 406

• Message text: Prefetch Priority for Service Class &1 has been set to &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM406 - Prefetch Priority for Service Class &1 has been set to &2 ?

  The SAP error message DB6PM406 indicates that the prefetch priority for a specific service class has been set to a certain value. This message is typically related to database performance tuning and resource management within the SAP environment, particularly when using a database like IBM Db2.
  Cause:
  The error message DB6PM406 is generated when the prefetch priority for a service class is not set to the expected value. This can happen due to various reasons, such as:
  
  Configuration Changes: Changes in the database configuration or service class settings that affect how data is prefetched.
  Performance Tuning: Adjustments made to optimize performance may inadvertently lead to this message being triggered.
  Resource Allocation: The system may be experiencing resource contention, leading to changes in prefetch priorities.
  
  Solution:
  To resolve the DB6PM406 error, consider the following steps:
  
  
  Check Configuration: Review the configuration settings for the service class in question. Ensure that the prefetch priority is set according to your performance requirements.
  
  
  Adjust Service Class Settings: If the prefetch priority is not optimal, you may need to adjust the settings for the service class. This can typically be done through the database management tools or SQL commands.
  
  
  Monitor Performance: Use performance monitoring tools to analyze the impact of the current prefetch settings. Look for any bottlenecks or performance issues that may be related to the prefetch priority.
  
  
  Consult Documentation: Refer to the SAP and database documentation for guidance on configuring service classes and prefetch priorities. This can provide insights into best practices and recommended settings.
  
  
  Database Administration: If you are not familiar with the database settings, it may be beneficial to consult with a database administrator who can help diagnose and resolve the issue.
  
  
  Related Information:
  
  Service Classes: In the context of databases, service classes are used to define how resources are allocated to different workloads. Understanding how these classes work can help in tuning performance.
  Prefetching: Prefetching is a technique used to improve performance by loading data into memory before it is actually needed. The priority of prefetching can significantly impact the efficiency of data retrieval.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  
  If the issue persists after following these steps, consider reaching out to SAP support or your database vendor for further assistance.